W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Convert Select Features 138 5.43" 103 4.05" 114 4.49" * RoHS lead-free-solder and lead-solder-exempted products are available * Rugged 35 mm DIN-rail snap-fit design * Class I equipment * Universal AC-input or DC-input (66 - 150 or 90 - 350 VDC) with single stage conversion * Power factor correction, harmonics IEC/EN 61000-3-2 * Virtually no inrush current * Compliant with EMC standards EN IEC 61204-3, EN 50121-3-2 * Emissions according to EN 55011 / 55032 * Very high efficiency; up to 89% * Short-term output peak power capability, rectangular current limiting characteristic * Single or two independently regulated outputs with 12, 24, 36, or 48 V * Outputs no-load, overload, and short-circuit proof * PCBs coated by protective lacquer * Very high reliability Safety-approved to IEC/EN 62368-1 3rd edition and UL/CSA 60950-1 2nd edition, UL508 listed components 1 1 not EW Table of Contents Description............................................................................2 Model Selection.....................................................................2 Functional Description...........................................................4 Electrical Input Data..............................................................6 Electrical Output Data...........................................................9 ElectromagneticCompatibility(EMC)..................................14 Immunity to Environmental Conditions................................17 Mechanical Data..................................................................19 Safety and Installation Instructions......................................20 Description of Options.........................................................23 Accessories.........................................................................28 Battery Charging /Temperature Sensor...............................29 belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Description The MELCHER Convert Select series represents a family of DIN-rail mountable DC-DC and AC-DC converters with power factor correction. The converters have been designed according to the latest industry requirements and standards. The converters are ideal for use in outdoor and other demanding applications to power building control systems, factory automation, industrial controls, instrumentation, electromagnetic drives, fans, and other DC loads. Different models are available with a single output or two independently regulated, electrically isolated outputs with 12, 24, 36, or 48 V. Special models for battery charging are available. The EW models are particularly suitable for 110 V railway applications; they have been designed in accordance with the railway standards EN50155 and EN50121. Key features of the Convert Select line include power factor correction with low harmonic distortion, negligibly low inrush current, high immunity to transients and surges, and low electromagnetic emissions. Internal protection circuits such as input over- and undervoltage lockout, thermal protection, as well as output overvoltage protection by a second control loop ensure safe operation of the final system. The outputs deliver an electrically-isolated Safety Extra Low Voltage (ES1) and low output noise. They are no-load, overload, and shortcircuit proof. The electronically controlled short-term peak power capability of up to 150% of the rated output power enables the front end converters to deliver additional power to start-up motors or to safely operate subsequent circuit breakers. Built-in large sized output capacitors absorb possible reverse energy, which may be caused by quick deceleration of electromagnetic drives connected directly to the output. A green LED at the front cover displays the status of the output(s). The Convert Select Series was designed according to all relevant international safety standards. The converters are approved by Nemko and CSA and are UL 508 listed. Adequate clearances and creepage distances allow operation in pollution degree 3 environment (with AC input). All board assemblies are coated with a protective lacquer. The thermal concept allows operation at full load up to an ambient temperature of 60 C (LW models) or 70 C (EW models) in free air without forced cooling. A rugged DIN snap-fit device allows easy and reliable fixing onto the various 35 mm DIN rail models. The converters are fitted with cage clamp terminals which are easily accessible from the front. System connectors with screw terminals for use with preassembled harnesses, external adjustment of the output voltage as well as various auxiliary functions are available as options. The letter E stands for improved EMC performance of LW models. Models without E are obsolete. Model Selection Table 1: Standard models Output 1 Output 2 Output Power Operating Input Voltage Vimin-Vimax Type Designation6 Efficiency Options3, 5 min8 [%] Vo1 nom [VDC] Io1 nom [A] Vo2 nom1 [VDC] Io2 nom [A] Po nom [W] 12.35 7.5* - - 93* LWR1301-6EG 3 83* 12.35 14* - - 173* LWN1301-6EG 83* 24.7 5 - - 124 LWR1601-6EG 87 3 24.7 10 - - 247 LWN1601-6EG 87 R 37.05 3.3 - - 123 LWR1701-6EG 3 88 D1, D2, D5 37.05 6.6 - - 245 LWN1701-6EG 3 88 M1, M2 49.4 2.5 - - 124 LWR1801-6EG 88 F 49.4 5 - - 247 88 K2 12.35 7* 12.35 7* 173* LWN2320-6EG 83* non-G 24.7 5 24.7 5 247 LWN2660-6EG 87 37.05 3.3 37.05 3.3 245 LWN2770-6EG3 89 49.4 2.5 49.4 2.5 247 LWN2880-6EG 89 24.7 5 - - 120 EWR1601-0G 9 87 24.7 5 24.7 5 240 EWN2660-0G 87 852 - 264 VAC, 47 - 63 Hz4, 90 2 - 350 VDC 7 66 - 150 VDC LWN1801-6EG 9 3 R, M1, M2, Q, K2, non-G * Version 106 or higher 1 R-input not connected. 2 For derating at low input voltage see section Output Power Derating. 3 For minimum quantity and lead times contact the Company. 4 The converters have been tested up to 440 Hz; operation at 16 2/3 Hz is also possible, but the output ripple is slightly higher. For questions when operating at frequencies <47 Hz or >63 Hz, consult the Company. 5 On double-output models the options R, M2, D1, D2, D5 are related to the second output only. 6 Improved EMC performance for LWN/LWR models. 7 Vi 250 VDC for models with option F 8 Min. efficiency at Vinom, Ionom, and TA = 25 C. Typical values are approx. 2% better. 9 EWN and EWR models are designed for railway applications according to EN 50155 and EN 50121. NFND: Not for new designs. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 2 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Table 2: Battery charger models (M1 included) Output Voltage VBat [VDC] Vo safe1 [VDC] Vo max [VDC] Vo nom5 [VDC] 12 12.84 1 14.65 13.8 24 25.68 1 29.3 27.3 3 4 5 6 7 8 1 2 Nominal Output Values 36 38.52 1 43.95 40.88 48 51.36 1 58.6 54.5 Operating Input Voltage Type Designation 6 Efficiency min8 [%] Io nom 5 [A] Po nom 5 [W] 7.5* 104* LWR1140-6EM1G 3 83* 14* 194* LWN1140-6EM1G 3 85* LWR1240-6EM1G 86 4.2 115 8.4 230 2.8 115 5.6 230 Vimin-Vimax 852 - 264 VAC, 47 - 63 Hz4, 90 2 - 350 VDC 7 Options 3 LWN1240-6EM1G LWR1840-6EM1G 85 F 3 86 K2 LWN1840-6EM1G3 86 non-G 2.1 115 LWR1740-6EM1G 86 4.2 230 LWN1740-6EM1G 87 Setting voltage (typ.) with open R-input For derating at low input voltage, see section Output Power Derating. For minimum quantity and lead times, contact the Company. The converters have been tested up to 440 Hz; for operating frequency <47 Hz or >63 Hz consult the Company. Nominal output figures, calculated with a cell voltage of 2.27V at 20C. Improved EMC performance. Vi 250 VDC for models with option F. Min. efficiency at Vinom, Vonom, Ionom, and TA = 25 C. Typical values are approx. 2% better. Part Number Description L W N 2 6 60 -6 E D1 F K2 G Input voltage range.............................................................E, L Series....................................................................................W Nominal output power 125 W................................................................ R 250 W................................................................ N Number of outputs.............................................................. 1, 2 Type specification.....................................................000 - 999 Operational ambient temperature range TA -40 to 60C......................................................-6 EW or customer-specific..............................-0, -5 Improved EMC performance..................................................E Options Output voltage control input1............................ R Save data signal1.............................. D1, D2, D5 Multiple functions via D-SUB connector1.. M1, M2 Built-in second fuse, input diode................... F, Q System connector............................................K2 RoHS compliant for all six substances 2 ........... G 1 2 Only one of these options is possible. Models without the suffix G (non-G option) do not use lead-free solder. Note: The sequence of options must follow the order above. NFND: Not for new designs. Example: LWN2660-6ED1FK2G: Power factor corrected AC-DC converter, operating input voltage range 85 - 264 VAC, 2 electrically isolated and individually regulated outputs, each providing 24.7 V, 5 A, improved EMC performance, options D1, F, K2, and RoHS compatible for all 6 substances. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 3 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Product Marking Basic type designation, applicable safety approval and recognition marks, CE mark, warnings, pin designation, company logo. Specific type designation, input voltage range, nominal output voltages and currents, degree of protection, batch number, serial number and data code including production site, version, and date of production. Functional Description The W Series converters are primary controlled AC-DC or DC-DC flyback converters with a constant switching frequency of 130kHz. The power-factor-corrected single-step conversion of the input voltage to a low output voltage results in extremely high efficiency. Depending upon the output power, the converters are fitted with one (125 W) or two (250 W) powertrains. Models with two powertrains have one or two outputs. Double-output models exhibit individually regulated powertrains. The input voltage is fed via fuse, filter, and rectifier to the main transformer, designed in planar technique. The input filter with very small input capacitance generates virtually no inrush current. An input transient suppressor protects the converter against high voltage peaks and surges. Input over- and undervoltage lockout as well as input current limitation protect the converter from operation outside of its specification. The input voltage waveform is sensed by the primary control logic to allow active power factor correction, forcing the input current to follow the input voltage waveform. The secondary side of the main transformer supplies via the rectifier diode a large electrolytic output storage capacitor providing for the hold-up time. Double-output models exhibit an individual control logic each. The output voltage and the output current are measured and fed back to the primary control logic via an optocoupler. A second control loop monitors the output voltage. It disables the output in the case of a failure in the control logic and limits the output voltage. Built-in temperature sensors monitor the internal temperature of each powertrain. If the temperature exceeds the limit, the converter reduces the output power continuously to keep the temperature below its limit. A green LED on the front cover confirms the presence of the output voltage(s). The R input (option R, M1, or M2) allows for external adjustment of the output voltage by means of a resistor or an external voltage source. An external sensor can be connected to the R input and allows for temperature-controlled battery charging (see Accessories). 03103b 2 1 2nd fuse (option F) 1 EW models have a link or a decoupling diode (opt. Q) in the Vi+ line. 2 Vo+ + Shunt Shunt Output filter N Vi- Cy Input filter Input filter 3 Rectifier1 L Vi+ Fuse 3 6 CY 4 Vo- Cy Cy 7 5 8 Control circuit including PFC and input OVP/UVP CY Vo/Io control 9 1 2nd control loop (ES1) 11 10 AUX Fig. 1 Single-output converters (125 W). tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 4 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters 03104b 1 have a link or a decoupling diode (opt. Q) in the Vi+ line. 2 3 Vo1+ 4 Vo1- 5 Vo/Io control 2nd control loop + Shunt Shunt Cy Cy Cy Control circuit including PFC and input OVP/UVP Cy Cy Cy Cy Control circuit including PFC and input OVP/UVP 1 EW models Shunt Shunt Output filter Input filter + Output filter 2nd fuse (option F) Input filter 2 Cy Rectifier1 N Vi- 3 Input filter L Vi+ Fuse Vo/Io control 6 7 8 9 Vo2+ Vo2- 1 2nd control loop 11 10 AUX Fig. 2 250 W converters. The figure shows a double-output model. For the pinout of 250 W single-output models, see fig. 1 or table 13. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 5 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Electrical Input Data General conditions: TA = 25C, unless TC is specified. Table 4a: Input data of LW models LWR Input AC Input Characteristics Vi Operating input voltage range Vi nom Rated input voltage range fi Rated input frequency1 Ii Input current P i0 Conditions Io = 0 - Io nom Tc - Tc max min typ 85 2 LWN DC Input max min 264 902 typ AC Input max min typ 3504 85 2 DC Input max min 264 902 typ Unit max 3504 V 100 (230) 240 220 100 (230) 240 220 Hz 50 - 60 - 50 - 60 - I o nom, V i = Vi nom 0.63 0.65 1.25 1.3 I o nom, V i = Vi min 1.75 1.67 3.5 3.3 No-load input power Vi min - Vi max 1.2 0.9 1.3 1 I inrush Inrushcurrent V i max , t > 0.1 ms 3 3 5 5 A Ci Input capacitance 5 5 6 6 F PF Powerfactor V i nom = 230 V, Io nom Conducted input RFI EN 55011 / 55032 V i nom, Io nom Vi RFI fswitch Radiated input RFI 0.86 5 - W - A, B A, B A, B A, B3 A A A A 130 130 130 130 3 Switchingfrequency 0.86 5 A 3 3 kHz For operating frequencies <47 Hz and >63 Hz consult the Company. The converters have been tested up to 440 Hz. Output power derating at low input voltage and/or high case temperature TC (see Output power derating). 3 Models with feature E (type test with LWN1701-6EG) - peak only. 4 Vi 250 VDC for models with option F. 5 Models with 12 V output: 0.70 for LWR, 0.75 for LWN 1 2 Table 4b: Input data of EW models Input Characteristics Vi Operating input voltage range Vi nom Rated input voltage range VUVT Undervoltage trigger Ii Input current P i0 Conditions Io = 0 - Io nom Tc - Tc max min EWR EWN DC Input DC Input typ 66 max min 150 1 66 110 54 typ 60 54 60 2.5 I o nom, V i = 66 V 2.2 4.4 No-load input power Vi min - Vi max 0.8 1.3 I inrush Inrushcurrent V i max , t > 0.1 ms Ci Input capacitance fswitch 1 Radiated input RFI EN 55011 / 55032 V i nom, Io nom Switchingfrequency V 110 1.25 Conducted input RFI max 150 1 I o nom, V i = Vi nom Vi RFI Unit A W 6 12 A 2.5 4.5 F A A A A 130 130 kHz Vi 168 VDC for 3 s. Overvoltage trigger adjusted to 170 - 182 V. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 6 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Output Power Derating The output power of LW models must be decreased at low input voltage and/or powertrain temperature above 125C. The powertrain temperature depends on the output power, the input voltage, and the cooling method. At low input voltage the losses increase. At the maximum specified environment temperature TA free air convection cooling might be insufficient approaching maximum ambient conditions. As a result, the output power has to be reduced according to the tables below. Note: The measurements have been made by the approval boards with free air convection cooling according to 62368-1 3rd edition specified ambient temperature TA and with the converter built in a cardboard box according to UL 508 and a specified temperature outside the box Tout. The tables give a correlation between TA or Tout and the case temperature TC (measuring point TC see Mechanical Data). For models not specified, please contact the Company. EW models need no derating. Table 5a: Po derating according to UL 60950-1 2nd edition at TA = 60C, or according to UL 508 at Tout = 50C Model Po nom TC max [W] [C] Deratebelow Vi [VAC] derateby Vi [VDC] [W/V] LWR1601-6E 124 80 108 98 -0.67 LWN1601/2660-6E 247 89 125 115 -1.25 LWR1701-6E 123 80 125 115 -1.25 LWN1701-6E 245 90 125 115 -1.25 LWR1801-6E 124 80 98 93 -0.67 LWN1801/2880-6E 247 89 125 115 -1.25 Table 5b: Po derating according to UL 60950-1 2nd edition at TA = 50C, or according to UL 508 at Tout = 40C Model Po nom LWR1601-6E 124 76 98 LWN1601/2660-6E 247 86 LWR1801-6E 124 76 LWN1801/2880-6E 247 86 [W] Deratebelow TC max [C] Vi [VAC] derateby Vi [VDC] [W/V] no derating -0.67 115 105 -1.25 93 no derating -0.67 105 95 -1.25 Input Fuse and Protection A fast-blow fuse ( Schurter F 6.3A, 5x20 mm), protected by a sleeve, is connected to the input L or Vi+. EW models have a smaller fuse (250 V, 4 x 9 mm, SOC NT36.3AV009, UL-recognized E-39265). For DC input voltages above 250 V consult the Installation Instructions. Converters with option F have large fuses (F6.3A, 5x20 mm). The DC input voltage for converters with option F is limited to 250 V. A VDR and a symmetrical input filter form an effective protection against input transients. An under- and an overvoltage lockout protect the converter, which is disabled below Vi min and above Vimax by an internally generated inhibit signal. The built-in bridge rectifier (LW models) provides reverse polarity protection at the input if operated from DC. EW models are protected by the (blowing) input fuse in connection with the body diode of the main transistor. Option Q offers a serial diode, but this reduces the efficiency by approx. 1%. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 7 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Efficiency 04071 90 80 70 60 50 40 30 20 10 0 0 0.2 0.4 Vi = 125 VAC Io Io nom 0.6 0.8 1 Vi = 230 VAC Fig. 3 Efficiency versus load (LWN2660-6) Power Factor, Harmonics All converters feature active power factor correction. PF 1 mA/W 4 LWN1701-6E 04070b 04069a 0.9 0.8 0.7 Limit class D according to IEC/EN 61000-3-2 3 0.6 0.5 2 0.4 0.3 1 0.2 0.1 0 0 3 5 7 9 11 13 Harm. Fig. 4 Harmonic currents at input current, measured at Vi = 230 VAC, Io = Io nom (LWN1701-6E). 0 0.2 0.4 0.6 0.8 1 Io Io nom Vi = 125 VAC Vi = 230 VAC Fig. 5 Power factor versus load (LWN2660-6) tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 8 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Electrical Output Data Table 6a: Output data of 125 Watt standard models. General conditions: TA = 25 C, unless TA is specified; R input open-circuit Model LWR1301 Characteristics Conditions min V o nom Outputvoltagenominal 1 V i nom, Io nom V o worst Output voltage range of tolerance Vi min - Vi max, Io = (0.1 - 1) Io nom Vo L Overvoltage protection Po nom Nominal output power Io nom Output current nominal Io L Output current limit Iop Output current boost 4 vo Ripple & noise max 12.27 12.35 12.0 14.25* V i = 100 V - V i max V i min - Vi max typ. 1 s LWR1701 Unit LWR1801 min typ max min typ max min typ max 24.25 24.7 25.2 36.37 37.05 37.8 48.5 49.4 50.4 12.43 24.55 24.7 24.85 36.82 37.05 37.28 49.1 49.4 49.7 12.9 24.0 25.8 36.0 38.7 48.0 15* 28.5 30 42.75 45 57 - * 3 typ EWR / LWR1601 V 51.6 60 93* 124 123 124 W 7.5* 5.0 3.3 2.5 A 7.58 8.6 5.1 5.7 11.3 7.5 3.37 3.8 5.0 2.53 2.9 3.75 EWR V i = 110 VDC, I o nom - 500 - - LWR V i = 230 VAC, fi = 50 Hz, Io nom 100 100 100 100 11002 11002 12002 12002 mVpp Vo u Static line regulation 100 V - V i max,I o nom 0.08 0.1 0.15 0.15 Vo I Static load regulation (droop) Vi nom I o = (0.1 - 1) Io nom -0.2 -0.4 -0.6 -0.8 Dynamic load regulation Voltage deviation Recovery time Vi nom , I o = (0.5 1) Io nom 1 1.2 1.5 1.8 40 40 80 80 ms vod V Temperature coefficient TCmin - TCmax 0.02 0.02 0.02 0.02 %/K tor Start-up time Vi = 0 Vi nom,Io nom 700 700 700 700 ms t oh min Hold-up time Io nom, Vo nom 0.8 Vo nom 10 6 / 15 20 25 vo * Converters with feature E and version 106 1 Setting voltage with open R-input 2 Superimposed low frequency ripple at 2* fi 3 Rectangular current limit characteristic (continuous operation) 4 Short-term peak power capability 150% of Po nom for approx. 1 s tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 9 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Table 6b: Output data of 250 Watt single-output standard models. General conditions as in table 6a Model LWN1301 Characteristics V o nom Conditions Outputvoltagenominal 1 min Output voltage range of tolerance Vo L Overvoltage protection Po nom Nominal output power Io nom Output current nominal max Vi min - Vi max, Io = (0.1 - 1) Io nom 12.27 12.35 12.0 14.25* V i = 100 V - V i max LWN1701 min typ max min typ max min typ 24.7 25.2 36.37 37.05 37.8 48.5 49.4 50.4 12.43 24.55 24.7 24.85 36.82 37.05 37.28 49.1 49.4 49.7 12.9 24.0 25.8 36.0 38.7 48.0 15* 28.5 30 42.75 45 57 173* 247 14* 245 10 6.6 Iop Output current boost 4 typ. 1 s 21 15 10 7.5 vo Ripple & noise V i = 230 VAC, fi = 50 Hz, Io nom 100 100 100 100 2 11.4 W 5.0 V i min - Vi max 10.1 6.7 7.6 V 60 247 Output current limit 3 16* max 51.6 Io L 14.1* Unit LWN1801 24.25 - * V o worst typ V i nom, Io nom LWN1601 A 5.1 5.7 mVpp 1100 1100 1200 1200 Vo u Static line regulation 100 V - V i max,I o nom 0.08 0.1 0.15 0.15 Vo I Static load regulation (droop) Vi nom, I o = (0.1 - 1)Io nom -0.2 -0.4 -0.6 -0.8 Dynamic load regulation Voltage deviation Recovery time Vi nom , I o = (0.5 1) Io nom 1 1.2 1.5 1.8 40 40 80 80 ms vod 2 2 2 V Temperature coefficient TCmin - TCmax 0.02 0.02 0.02 0.02 %/K tor Start-up time Vi = 0 Vi nom,Io nom 700 700 700 700 ms t oh min Hold-up time Io nom, Vo nom 0.8 Vo nom 10 15 20 25 vo Table 6c: Output data of 250 Watt double-output standard models. General conditions as in table 6a Model LWN2320 Characteristics Conditions min V o nom Outputvoltagenominal 1 V i nom, Io nom * 12.27 V o worst Output voltage range of tolerance Vi min - Vi max, Io = (0.1 - 1) Io nom 12.0 Vo L Overvoltage protection Po nom Nominal output power Io nom Output current nominal typ max 12.35 14.25* V i = 100 V - V i max typ max min typ max min typ max 24.7 25.2 36.37 37.05 37.8 48.5 49.4 50.4 12.43 24.55 24.7 24.85 36.82 37.05 37.28 49.1 49.4 49.7 12.9 24.0 25.8 36.0 38.7 48.0 15* 28.5 30 42.75 45 57 173* Output current limit Iop Output current boost 4 typ. 1 s vo Ripple & noise V i = 230 VAC, fi = 50 Hz, Io nom 1100 7.1* Unit LWN2880 min 247 2 x 7* V i min - Vi max LWN2770 24.25 - Io L 3 EWN/LWN2660 245 2x5 8.0* 5.1 51.6 60 247 2 x 3.3 5.7 3.37 W 2 x 2.5 3.8 A 2.53 2.9 2 x 10.5* 2 x 7.5 2 x 5.0 2 x 3.75 100 100 5 100 100 2 1100 1200 0.08 0.1 0.15 0.15 2 2 V 1200 mVpp 2 Vo u Static line regulation 100 V - V i max,I o nom Vo I Static load regulation (droop) Vi nom, I o = (0.1 - 1) Io nom -0.2 -0.4 -0.6 -0.8 Dynamic load regulation Voltage deviation Recovery time Vi nom , I o = (0.5 1) Io nom 1 1.2 1.5 1.8 40 40 80 80 ms Temperature coefficient TCmin - TCmax 0.02 0.02 0.02 0.02 %/K tor Start-up time Vi = 0 Vi nom,Io nom 700 700 700 700 ms t oh min Hold-up time Io nom, Vo nom 0.8 Vo nom 10 6 / 15 20 25 vod vo * Converters with feature E and version 106 1 Setting voltage with open R-input 2 Superimposed low frequency ripple at 2* fi V Rectangular current limit characteristic (continuous operation) Short-term peak power capability 150% of Po nom for approx. 1 s 5 EWN2660: 500 mV @ Vi = 110 VDC 3 4 tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 10 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Table 7a: Output data of 125 Watt battery charger models. General conditions: TA = 25 C, unless TA is specified; R input left open-circuit, unless otherwise specified Model LWR1140-6EM1 Characteristics Conditions Outputsetting voltage1 V i nom, Io nom V Bat Output voltage (max) controlled by R input Vi min - Vi max, Io = (0.1 - 1) Io nom Vo L Overvoltage protection Po nom Nominal output power Io nom Output current nominal V o safe LWR1240-6EM1 LWR1840-6EM1 LWR1740-6EM1 min typ max min typ max min typ max min typ max 12.25 12.84 13.15 24.5 25.68 26.3 36.75 38.52 39.45 49 51.36 52.6 14.65 29.3 15.45* V i = 100 V - V i max 16.25* 43.95 30.9 32.5 46.35 48.75 61.8 65 104* 115 115 115 W 7.5* 4.2 2.8 2.1 A Output current limit Iop Output current boost 4 typ. 1 s 11.3* vo Ripple & noise V i = 230 VAC, fi = 50 Hz, Io nom 100 100 100 100 11002 11002 12002 12002 V i min - Vi max V 58.6 Io L 3 Unit 7.58* 8.6* 4.24 4.8 2.9 3.3 6.3 2.2 4.2 2.5 3.2 mVpp Vo u Static line regulation 100 V - V i max,I o nom 0.08 0.1 0.15 0.15 Vo I Static load regulation (droop) Vi nom, I o = (0.1 - 1)Io nom -0.2 -0.4 -0.6 -0.8 vod Dynamic load regulation Voltage deviation Recovery time Vi nom , I o = (0.5 1) Io nom 1.2 1.2 1.6 1.9 40 40 80 80 ms vo Temperature coefficient TCmin - TCmax 0.02 0.02 0.02 0.02 %/K Start-up time Vi = 0 Vi nom,Io nom 700 700 700 700 ms LWN1840-6EM1 LWN1740-6EM1 Unit tor V Table 7b: Output data of 250 Watt battery charger models. General conditions as in table 7a Model LWN1140-6EM1 Characteristics Conditions Outputsetting voltage1 V i nom, Io nom V Bat Output voltage (max) controlled by R input Vi min - Vi max, Io = (0.1 - 1) Io nom V o safe Vo L Overvoltage protection Po nom Nominal output power Io nom Output current nominal LWN1240-6EM1 min typ max min typ max min typ max min typ max 12.25 12.84 13.15 24.5 25.68 26.3 36.75 38.52 39.45 49 51.36 52.6 14.65 15.45* V i = 100 V - V i max 29.3 16.25* 30.9 194* 43.95 32.5 46.35 14* 58.6 48.75 230 61.8 230 8.4 65 230 5.6 Output current limit 3 V i min - Vi max Iop Output current boost 4 typ. 1 s 21* 12.6 8.4 6.3 vo Ripple & noise V i = 230 VAC, fi = 50 Hz, Io nom 100 100 100 100 2 16.0* 8.48 9.6 W 4.2 Io L 14.1* 5.69 V 6.4 A 4.3 5.0 mVpp 1100 1100 1200 1200 Vo u Static line regulation 100 V - V i max,I o nom 0.08 0.1 0.15 0.15 Vo I Static load regulation (droop) Vi nom, I o = (0.1 - 1)Io nom -0.2 -0.4 -0.6 -0.8 Dynamic load regulation Voltage deviation Recovery time Vi nom , I o = (0.5 1) Io nom 1.2 1.2 1.6 1.9 40 40 80 80 ms Temperature coefficient TCmin - TCmax 0.02 0.02 0.02 0.02 %/K Start-up time Vi = 0 Vi nom,Io nom 700 700 700 700 ms vod vo tor 2 2 2 V * Converters with feature E and version 106 1 Setting voltage with open R-input = Vo safe 2 Superimposed low frequency ripple at 2* f i 3 Rectangular current limit characteristic (continuous operation) 4 Short-term peak power capability 150% of Po nom for approx. 1 s tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 11 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Parallel Operation Double-output models exhibit an independent control logic each. Both outputs can be connected in parallel, provided that options S (included in M1) and R are not used, since they influence only the 2 nd output. The two power trains share the current due to their output voltage droop characteristic. Up to 3 converters with the same output voltage may be operated in parallel. It is possible to parallel W Series with X Series converters. Reasonable current sharing is achieved by the droop characteristic. Correct mode of operation is highly dependent upon the wiring of the converters and the impedance of these wires. Use wires with equal length and equal cross sections of min.1.5 mm 2. The best results for parallel operation can be achieved with the wiring shown in fig. 6. Parallel operation of single-output models using the option R (output voltage adjust) is possible, but not recommended. Refer to fig. 6; the connections between the pins 8 and 9 (both Vo-) should be as short as possible. Note: Parallel operation is not possible, if a temperature sensor is connected, as the sensor eliminates the output voltage droop. Note: For ORing diodes, we recommend to use Schottky diodes, mounted on a common heatsink to avoid thermal run away (or the use of double diodes). 11054b AUX 10 Vi Vo- 9 Vo- 8 Vo+ 7 VR Vo+ 6 Vo- 5 Vo- 4 Vo+ 3 Vo+ 2 AUX 10 Vi Vo- 9 Vo- 8 Vo+ 7 + Load _ Vo+ 6 Vo- 5 Vo- 4 Vo+ 3 Vo+ 2 AUX 10 Vi Vo- 9 Vo- 8 Vo+ 7 Vo+ 6 Vo- 5 Vo- 4 Vo+ 3 Vo+ 2 Additional wiring for output currents Io 10 A Additional wiring, if using the R-input Fig. 6 Wiring for single-output converters connected in parallel. Additional wiring for higher output currents and with the use of option R is shown. Series Connection Series connection of several outputs up to 150 V is possible. Exceeding an output voltage of 60 V, the output is not ES1. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 12 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Output Characteristic and Protection The output characteristic, individual for each powertrain, is rectangular with a droop to ease parallel operation; see fig. 7. However, a 50% higher output current is possible for a short time, such allowing start-up of loads or charging of capacitors; see fig. 8. Each output is independently protected against internal overvoltage by means of a second control loop. When the output voltage exceeds VoL, the respective output is disabled. Vo /Vo nom Io / Io nom 1.6 05181a 1.0 1.4 0.8 1.2 0.6 1.0 0.4 0.8 0.2 0 05194b 0 0.4 0.2 0.6 0.8 1.0 1.2 Io /Io nom Fig. 7 Vo versus Io (single-output model, typical values). 0.6 - 0.5 0 1 0.5 1.5 2 2.5 s Fig. 8 Short term peak power characteristic: overcurrent versus time (typical values). Overtemperature Protection A built-in temperature sensor protects each powertrain is independently protected against overtemperature. When a certain temperature is reached, the concerned powertrain reduces its output power continuously. Thermal Considerations The thermal conditions are influenced by input voltage, output current, airflow, and temperature of surrounding components. TAmax is therefore, contrary to TCmax, an indicative value only. Caution: The installer must ensure that under all operating conditions TC remains within the limits stated in the table Temperaturespecifications. Note: Sufficient forced cooling allows TA to be higher than TAmax provided that TCmax is not exceeded. It is recommended that continuous operation under worst case conditions of the following 3 parameters be avoided: Minimum input voltage, maximum output power, and maximum temperature. Battery Charging and Temperature Sensor The battery charger models exhibit the option M1 and have been designed to charge lead-acid batteries. The R-input allows for connecting a battery-specific temperature sensor, which provides temperature controlled adjust of the trickle charge voltage. This optimizes charging as well as battery life time. Depending upon the cell voltage and the temperature coefficient of the battery, different sensor types are available; see Accessories. Note: Parallel operation is not possible, if the temperature sensor is connected to the paralleled outputs Vo+, as the sensor eliminates the output voltage droop. However, it is possible to insert bleeding resistors in the Vo+ output lines of each converter in order to create a droop of approx. 0.6 V @ Ionom for 24 V outputs (1.2 V @ Ionom for 48V outputs), but this creates considerable power losses. Cell voltage [V] 2.45 06139b Input 2.40 2.35 Power supply 03099d Vo+ Vo- Load R 2.30 2.25 + - 2.20 2.15 Vo safe 2.10 -20 -10 0 10 VC = 2.27 V, -3 mV/K VC = 2.23 V, -3 mV/K 20 30 40 50 C + Temperature sensor VC = 2.27 V, -3.5 mV/K VC = 2.23 V, -3.5 mV/K Fig. 9 Trickle charge voltage versus temperature for different temperature coefficients (Vosafe with disconnected sensor) Battery Fig. 10 Schematic circuit diagram of a system with battery backup and temperature-controlled charging. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 13 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Electromagnetic Compatibility (EMC) Compliant with EMC standards EN IEC 61204-3 / EN 50121-3-2. Electromagnetic Immunity The W Series has been successfully tested to the following specifications: Table 8: Electromagnetic immunity (type tests) Phenomenon Standard Level Coupling mode1 Value applied Waveform Source imped. Test procedure In oper. Perf. crit. 2 Electrostatic discharge (to case) IEC/EN 61000-4-2 43 contact discharge 8000 Vp 1/50 ns 330 A 15000 Vp 10 positive and 10 negative discharges yes air discharge Electromagnetic fieldRF IEC/EN 61000-4-3 34 antenna 10 V/m 4 AM 80%, 1 kHz sinusoidal N/A 80 - 1000 MHz yes A ENV 50204 3 antenna 10 V/m N/A 900 5 Mhz yes A IEC/EN 61000-4-3 (EW models) 5 antenna 20 V/m AM 80%, 1 kHz sinusoidal N/A 80 - 1000 MHz yes A IEC/EN 61000-4-4 3 capacitive, o/c 2000 Vp 50 A i/c, +i/-i direct coupling 2000 Vp 6 60 s positive 60 s negative transients per coupling mode yes 36 bursts of 5/50 ns 5 kHz over 15 ms; burst period: 300 ms IEC/EN 61000-4-5 37 +i/c, - i/c 2000 Vp 1.2 / 50 s 12 yes B +i/- i 1000 Vp 1.2 / 50 s 2 5 pos. & 5 neg. surges per coupling mode Conducted disturbances IEC/EN 61000-4-6 38 i, o, signal wires 10 VAC (140dBV) AM 80% 1 kHz 150 0.15 - 80 MHz yes A Powerfrequency magnetic field IEC/EN 61000-4-8 - - 100 A/m 50 and 60 Hz yes A Surges (EW models) IEC/EN 50155:2001 wave A9 +i/c, - i/c 1800 Vp yes A Electrical fast transients/burst Surges 10 V/m 50% duty cycle, 200 Hz repet. frequ. 1400 - 2100 MHz 5 V/m 2100 - 2500 MHz 5/50 s - 5 x, y, and z axis 5 pos. and 5 neg. pulses i = input, o = output, c = case. A = Normal operation, no deviation from specifications, B = Normal operation, temporary loss of function or deviation from specs. possible. 3 Exceeds EN 50121-3-2:2006 table 9.3 and EN 50121-4:2006 table 1.4. 4 EW models: 20 V/m, which corresponds to EN 50121-3-2:2006 table 9.1 and exceeds EN 50121-4:2006 table 1.1. 5 EW models only. Corresponds to EN 50121-3-2:2006 table 9.2 and EN 50121-4:2006 table 1.2 (compliance with digital mobile phones). 6 Corresponds to EN 50121-3-2:2006 table 7.2 and EN 50121-4:2006 table 2.2. 7 Complies with EN 50121-3-2:2006 table 7.3 and EN 50121-4:2006 table 2.3. 8 Corresponds to EN 50121-3-2:2006 table 8.1 and EN 50121-4:2006 table 3.1 (radio frequency common mode). 9 Corresponds to EN 50121-3-2:2000. Covers EN 50155:1995, RIA12, direct transients, waveform D (EW models only). 1 2 tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 14 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Emissions Table 9: Electromagnetic emissions for LW models with feature E: (type tests with LWN1701-6EG) Phenomenon Standards Conditions Results Harmonics EN 61000-3-2:2006 Vi = 230 V, Vo nom, Io nom Class A, D Voltage fluctuation and flicker EN 61000-3-3 + A2:2005 Vi = 230 V, Vo nom, Io nom Complied Note: An external toroid ferrite core across the input lines reduces the emissions considerably. Fig. 11a Conducted emissions of LW models with feature E: Disturbances at the phase input according to EN55032, measured at Vi nom and Ionom. (LWN1701-6EG) PMM 8000 PLUS dBV Fig. 11b Radiated emissions measured according to EN 55032 for LW models with feature E (LWN1701-6EG), antenna 3 m distance, horizontal polarized) dBV/m 50 Limit: 61204bqp Detector: Peak, conducted Vi+, 6.6.06 EWN2660-0 U i =110VDC, I o =10A, outputs in parallel configuration EN 55011 A EN 55011 B 60 40 30 20 20 0 10 0.2 0.5 1 2 5 10 20 MHz Fig. 12a Conducted emissions of EW models: Disturbances (peak) at the phase input according to EN55011, measured at Vi nom and Ionom. (EWN2660- 0) JM038a JM008 40 TUV-Divina, ESVS 30:R&S, BBA 9106/UHALP 9107:Schwarzb., QP, 2006-05-29 Testdistance 10 m, EWN2660-0 Ui =110 V, U o =24 V I o = 2 x 5 A 0 30 <25 dbV/m 50 100 200 500 1000 MHz Fig. 12b Radiated emissions of EW models, measured at Vi nom, Ionom, accord. to EN55011, antenna 10 m distance, (EWN2660-0) tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 15 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters External EMC Filter for Models with Feature E An external EMC filter can be connected to the inputs lines of the converter. However, a small choke has to be included in the phase line to avoid interferences between the internal and external filter, which would cause dramatically increased low harmonics. The figure below shows the used external filter configuration consisting of the inlet filter KMF1.1241.11 (4A, Schurter www.schurter.com) and the decoupling choke EPCOS B82111B0000C018, 11 H, 4 A, 6 x 20 mm. Note: This filter allows for connection of an IEC inlet and is available with 1 or 2 incorporated fuses. A similar filter with AMP terminals (6.3 x 20 mm) is also available (Schurter FMLB 5500.2028). L' PE Choke L PE' PE N' N Converter JM007 Fig. 13a External filter to reduce conducted emissions of LW models with feature E (L1 = L2 = 1.6 mH, Cx = 47 nF, Cy = 2.2 nF) Fig. 13b External inlet filter tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 16 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Immunity to Environmental Conditions Table 10: Mechanical stress and climatic Test method Standard Test Conditions Cab IEC/EN 60068-2-78 MIL-STD-810D section 507.2 Temperature: 40 2 C Relative humidity: 93 Duration: 56 days Concentration: 5% (30 C) Duration: 2 h per cycle Conditions: 40C, 93% rel. humidity Storage Duration: 3 cycles of 22 h Kb Eb Fc Ea Fh Fda Damp heat steady state Salt mist, cyclic (sodium chloride NaCl solution) Bump (half-sinusoidal) Vibration (sinusoidal) IEC/EN 60068-2-52 IEC/EN60068-2-29 MIL-STD-810D sect. 516.3 IEC/EN60068-2-6 MIL-STD-810D sect. 514.3 Status +2/-3 Converter not operating % Converter not operating Acceleration amplitude: 25 g n = 245 m/s2 Bump duration: 11 ms 6000 bumps: 1000 in each direction Acceleration amplitude: 10 g n = 98.1 m/s2 Bump duration: 11 ms 6000 bumps: 1000 in each direction Acceleration amplitude: 0.35 mm (10 - 60 Hz) Frequency (1 Oct/min): 5 gn = 49 m/s (60 - 2000 Hz) Test duration: 7.5 h (2.5 h each axis) Acceleration amplitude: 0.25 mm (10 - 60 Hz) Frequency (1 Oct/min): 2 gn = 19 m/s2 (60 - 2000 Hz) Test duration: 7.5 h (2.5 h each axis) Acceleration amplitude: 50 gn = 490 m/s2 Bump duration: 11 ms 2 Shock (half-sinusoidal) IEC/EN60068-2-27 MIL-STD-810D sect. 516.3 Number of bumps: 18 (3 in each direction) Shock EN 50155/EN61373 3 sect. 10, class A and B body mounted 4 Acceleration amplitude: 5.1 g n Bump duration: 30 ms Number of bumps: 18 (3 in each direction) IEC/EN60068-2-64 Accelerationspectraldensity: 0.05 g n2/Hz Frequency band: 8 - 500 Hz Acceleration magnitude: 4.9 g n rms Test duration: 3 h (1 h each axis) Accelerationspectraldensity: 0.01 g n2/Hz Frequency band: 20 - 500 Hz Acceleration magnitude: 2.2 g n rms Test duration: 1.5 h (0.5 h each axis) Accelerationspectraldensity: 0.01 g n2/Hz Frequency band: 5 - 150 Hz Acceleration magnitude: 0.8 g n rms Test duration: 1.5 h (0.5 h each axis) Random vibration broad band, digital control & guidance Random vibration wide band, high reproducibility Simulated long life time testing at increased random vibration levels IEC/EN60068-2-35 EN 50155 /EN 61373 sect. 8 and 9, class B body mounted 3 3 Converter not operating, wall mounted 1 Converter not operating, on DIN-rail 2 Converter operating, wall mounted 1 Converter operating, on DIN-rail 2 Converter not operating, wall mounted 1 Converter operating, on DIN-rail 2 Converter operating, wall mounted 1 Converter operating, mounted on DIN-rail 2 Converter operating, mounted on DIN-rail 2 Wall-mounted with brackets UMB-W [HZZ00618]; see Accessories Fastened on a DIN-rail with 2 additional DIN-rail fixing brackets DMB-EWG, see Accessories. This covers also wall-mounting with brackets, because wall mounting performs better in vibration test. 3 EW models (railway standards) 4 Body mounted = chassis of a railway coach 1 2 tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 17 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Temperatures Table 11: Temperature specifications, valid for an air pressure of 800 - 1200 hPa (800 - 1200 mbar) Model LW models -6 Characteristics Conditions TA Ambienttemperature TC Case temperature TS Storage temperature Converter operating1 2 Non operational EW models -0 Unit min max min max -40 60 -40 70 3 -40 90 2 -40 90 -40 100 -40 100 C 3 See Thermal Considerations See table 5 Po derating 3 Mounted in vertical position 1 2 Failure Rates Table 12: MTBF Values at specified case temperature Module types MTBF 1 1 Ground benign Ground fixed Ground mobile 40 C 40 C 70 C 50 C LWR1xxx 892 000 180 000 197 000 68 000 LWN1xxx 644 000 131 000 72 000 51 000 LWN2xxx 522 000 101 000 55 000 38 000 Unit h Calculated in accordance with MIL-HDBK-217E, notice 2. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 18 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Mechanical Data 113.6 (4.47") 40 (1.6") 106.6 (4.2") 122.8 (4.84") 15 (0.59") Dimensions in mm. European Projection 108 (4.25") 103 (4.05") 29.4 (1.16") 09107c x axis z axis (vertical) 33 (1.3") 43 (1.69") D-SUB Male connector Option M (female connector) 49 (1.93") Wall mounting brackets (accessories) 13 (0.51") 138 (5.43") TC Option M (female connector) 31 (1.22") LED Measuring point for case temperature TC Fig. 14 Case W01 EWN/LWN: weight approx. 1400 g EWR/LWR: weight approx. 1200 g Case designed by ATP, Munich. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 19 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Safety and Installation Instructions Terminal Allocation The terminal allocation tables define the electrical potential of the converters. 10067 10066 1 2 3 1 2 3 4 5 6 7 8 9 10 11 Fig. 15a View of the input terminals (cage clamp style) Fig. 15b View of the output terminals (cage clamp style) Table 13a: Input terminals of LW models Table 13c: Terminal allocation output side Pin no. 1 Pin designation Electrical determination Protective earth PE N~ Input neutral, DC negative 3 L~ Input phase, DC positive Table 13b: Input terminals of EW models 1 2 3 Pin designation ViVi+ Electrical determination Protective earth PE Pin des. 1 2 Pin no. Pin no. Single output Double output Functional earth to load Functional earth to load 2 + Output positive Output 1 positive 3 + Output positive Output 1 positive 4 - Output negative Output 1 negative 5 - Output negative Output 1 negative 6 + Output positive Output 2 positive 7 + Output positive Output 2 positive 8 - Output negative Output 2 negative Input negative 9 - Output negative Output 2 negative Input positive 10 AUX Option Option Functional earth to load Functional earth to load 11 Installation Instructions The converters of the W Series are components, intended exclusively for inclusion within other equipment by professional installers. Installation must strictly follow the national safety regulations in compliance with the enclosure, mounting, creepage, clearance, casualty, markings and segregation requirements of the end-use application. DIN-rail mounting is possible with the built-in snap-fit device on a DIN-rail. This fulfills the mechanical transport requirements as per ETSI 300019-1-2, class 2 (vertical). To fulfill the requirements of IEC721-3-2, class 2.1 (vertical), 2 additional fixing brackets HZZ00624-G (see Accessories) must be fitted on the bottom side of the DIN-rail. For heavy duty railway applications, we recommend installing all 4 fixing brackets HZZ00624-G. Chassis or wall mounting is possible using the universal chassis-mounting brackets HZZ00618-G (see Accessories). Such installation complies with IEC721-3-2, class 2.2 (vertical and horizontal). Caution: Install the converters vertically, and make sure that there is sufficient airflow available for convection cooling. The minimum space to the next device should be: top/bottom: 30 mm, left/right: 20 mm. The converters of the W Series are class I equipment: Input terminal 1 ( ) and the output terminals 1 and 11 ( ) are reliably connected to the case. For safety reasons it is essential to connect the input terminal 1 ( ) with protective earth. Output terminals 1 and 11 can be used to connect the output voltage(s) or the load to functional earth. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 20 of 29 W Series 10072 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters 10073 Fig. 16a Snap-fit mounting to DIN-Rail. Fig. 16b Dismounting from DIN-rail. Use proper tool (min. 3 mm screwdriver) and adequate force. 10074 1 3 2 Fig. 17 Cage clamp terminals. Use 0.5 to 2.5 mm2 (AWG 20 to 12) solid or stranded wires depending on local requirements. The phase input (L ~ or Vi+) is internally fused; see Input Fuse. This fuse is designed to break an overcurrent in case of a malfunction of the converter and is not customer-accessible. External fuses in the wiring to one or both input lines (L ~ and/or N ~ ) may be necessary to ensure compliance with local requirements. A built-in second fuse in the neutral path is available as option F. A second fuse in the wiring to the neutral terminal N ~ or option F is needed if: * Local requirements demand an individual fuse in each source line * Neutral and earth impedance is high or undefined * Phase and neutral of the mains are not defined or cannot be assigned to the corresponding terminals (L ~ to phase and N ~ to neutral). Models with Option F: Caution! Double-pole/neutral fusing. If the converters operate at source voltages above 250 VDC, an external fuse or a circuit breaker at system level should be installed. Caution: * Installation must strictly follow the national safety regulations. * Do not open this apparatus! Protection Degree and Cleaning Liquids The protection degree of the converters is IP20. Protective covers over input and output terminals are available on request; see Accessories. Any penetration of liquid or foreign solid objects is to be prevented, since the converters are not hermetically sealed. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 21 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Standards and Approvals The converters of the LW Series with feature E were safety-approved to IEC/EN 62368-1 3rd edition and UL/CSA 60950-1 2nd edition (models without E: IEC/EN 62368-1 3rd edition), IEC 61010-1:C11:2002 (models without E: IEC 61010-1), and EN 50178:1997 (with and without E). The converters are UL508-listed components. The EW models are safety-approved to IEC/EN 62368-1 3rd edition and UL/CSA 60950-1 2nd edition The converters have been designed in accordance with said standards for: * Class I equipment * Power supply for building-in, vertical mounting on 35 mm DIN-rail or on a wall * Overvoltage category II (III for 110 VAC supply) * Basic insulation between input and case, based on 250 VAC * Double or reinforced insulation between input and output, based on 250 VAC and 350 VDC. * Functional insulation between outputs and case. * Functional insulation between outputs. * Pollution degree 3 environment (AC-input) and degree 2 (DC input). The converters are subject to manufacturing surveillance in accordance with the above mentioned standards and with ISO9001:2015. Operation at Frequencies Greater 60 Hz The LW Series converters have been tested for operation up to 440 Hz. However, the Y and X caps are not approved to such frequency. The leakage currents are higher than at 60 Hz, whereas the output ripple voltage is lower. Leakage Currents with AC Supply Leakage currents flow due to internal leakage capacitance and RFI suppression Y-capacitors. The current values are proportional to the mains voltage and nearly proportional to the mains frequency. They are specified at maximum operating input voltage where phase, neutral, and protective earth are correctly connected as required for class I equipment. Leakage current may exceed 5 mA, if fi > 63 Hz. Railway Applications The W Series converters have been designed observing the railway standards EN50155 and EN50121. All boards are coated with a protective lacquer. The EW Series is particularly suitable for connection to 110V railway batteries. Isolation The electric strength test is performed in the factory as routine test in accordance with EN 62911 and IEC/EN 62368-1 3rd edition and should not be repeated in the field. The Company will not honor warranty claims resulting from incorrectly executed electric strength field tests. Table 14: Isolation Characteristics Electric strength test Insulation resistance 1 2 Input to Case and Output(s) Output(s) to Case Output 1 to Output 2 and AUX Unit Factory test 1 s 2.8 1 1.4 0.5 kVDC AC test voltage equivalent to factory test 2.0 1.0 0.35 kVAC >300 2 >300 2 >100 M In accordance with IEC/EN 62368-1 3rd edition, subassemblies are pretested with 4.2 kVDC. Tested at 500 VDC. LED Indicator A green LED is activated, when the output voltage Vo is within the normal operating tolerance band. Note: This LED is also activated, when the converter is not powered by the input, but a loaded battery is connected to the output. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 22 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Safety of Operator-Accessible Output Circuits If the output circuit of a converter is operator accessible, it shall be a ES1 circuit according to 62368-1 3rd edition related safety standards. The converters have ES1 output circuits up to an output voltage of 57.5 V. However, if the isolated outputs are connected to another voltage source or connected in series with a total of >57.5 V the outputs are hazardous. It is the sole responsibility of the installer to ensure the compliance with the relevant and applicable safety regulations. Description of Options E designates LW models with improved EMC performance. Refer to the EC Declaration of Conformity. Feature E is standard for new designs. Single options D1, D2, D5, R are available (as single choice options) on the AUX terminal (10), referenced to Vo-. Option M1 and M2 designate a combination of several options accessible via a D-SUB connector. Option M1 includes the function SD (shutdown). Note: In double-output models, the options D1, D5, R, and SD concern only output 2. Single Options Using the AUX Pin The connection is shown in the figure below. For the description refer to Adjustment of Vo or Vo2 (next section). Rext1 11 AUX 10 Vo2- 9 or Vo- 8 Vo2+ 7 or Vo+ 6 5 4 3 2 1 Adjustment with Vext Rext2 Adjustment with Rext 11 AUX 10 Vo2- 9 or Vo- 8 7 6 5 4 3 2 1 06142b + Vext Fig. 18 Connection of adjust resistors or an external voltage source to adjust the output voltage Vo or Vo2 (option M1 or M2 not fitted) Multiple Options M1 or M2 via D-SUB Connector The option board is suitable for applications, where several options are needed. Option M1 is standard for battery charger models, option M2 is suitable for applications without battery or for simple applications with battery. Table 15: Pin allocation of the 9 pin D-SUB connector Pin Designation Description 1 GND1 System ground / common signal return 2 R R input 3 3 VCC 4 D1 Output voltage monitor Vo low D1 3 5 D5 Output 2 voltage monitor Vo low D5 3 6 SD Shutdown 3 7 D-adj Adjustment of threshold values of D1 or D5 8 D2 Input voltage monitor Vi low 9 Sys-OK System okay (all outputs are okay) 1 2 Positive supply voltage ( output 2) Do not connect GND1 (pin 1) with the neg. output (-) 2 Do not connect VCC (pin 3) with the positive output (+) 3 In double-output models, R, D1, D5, SD concern output 2 only. 1 tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 23 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Table 16a: Option board M1 Function R Description Output voltage adjust D1 Table 16b: Option board M2 1 Output voltage monitor Vo low D1 D2 Input voltage monitor Vi low D5 Output 2 voltage monitor 1 1 Description R Output voltage adjust 1 D2 Input voltage monitor Vi low D5 Output voltage monitor 1 (battery deep discharged): Vo low D5 D-adj (battery deep discharged): Vo low D5 Sys-OK System okay SD Shutdown 1 D-adj Adjustment of trigger values D1 and D5 1 Function 1 Adjustment of trigger values D1 and D5 In double-output models, only output 2 is concerned. In double-output models, only output 2 is concerned. D2: Input Voltage Monitor (Power Fail) D2 monitors the input voltage V i. When Vi drops below 653 VAC or 92 VDC, the D2 signal output is high impedance (opencollector, max. 50 V). When Vi is greater then said level, the signal output D2 is conducting: VD2 <1.5 V, I D2max < 50 mA. D1: Output Voltage Monitor. D-SUB (female) D-SUB (female) + 8 7 6 VCC Power-Fail D2 + 11 10 9 8 Vo2+ 7 or Vo+ 6 5 4 3 2 1 Power-Fail D2 11 AUX 10 9 8 Vo2+ 7 or Vo+ 6 5 4 3 2 1 9 06140b 9 8 7 6 5 4 3 2 1 06141b 5 4 3 2 1 + Fig. 19 Option D2: Examples of relay control to monitor a power failure. D1: Output Voltage Monitor D1 is intended for monitoring the bus voltage of a battery-buffered system. It indicates that the system is powered from the battery and can for instance be used as a warning signal or to switch off a part of the load. When the output voltage Vo (or Vo2) is greater than VolowD1 specified in table 17, the D1 signal output is conducting: VD1 <1.5 V, I D1max < 50 mA. When Vo is lower, the D1 signal output is high impedance (open-collector, max. 58.6 V). In double-output models, D1 monitors only output 2 (Vo2). In applications without battery-buffering the D1 signal may not be suitable, since smaller dynamic load changes may cause D1 to trigger. For such applications, D5 with a trigger level of approx. 85% of Vonom should be chosen (e.g., for a bus voltage of 24.7 V: trigger level at 21 V). tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 24 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters D5: System Voltage Monitor (Battery Low) D5 monitors the output voltage Vo (Vo2 in double-output models) or the lowest admissible voltage of a connected battery (battery deep discharge). The definition of D5 is similar to D1, but the trigger level is lower. When Vo (or Vo2) is greater than VolowD5 specified in table 17, the D2 signal output is conducting: VD5 <1.5 V, I D5max < 50 mA. When Vo is lower, the D5 signal output is high impedance (open-collector, max. 58.6 V). In double-output models, D5 monitors only output 2 (Vo2). In systems without battery support, D5 signals that Vo (or Vo2 ) is going to drop below a safe value. In battery-buffered systems, D5 indicates that the battery has reached its deepest discharge level prior to getting damaged. The D5 signal can be used for instance to disable loads, save data, or to start a controlled switch-off of running processes. Table 17: Options D1 and D5: Trigger and switch-on levels Model Battery VBat Vo low D1 Vo low D 5 [ V] trigger [ V] switchon [ V] trigger [ V] switchon [ V] LWR/LWN1140 12 11.5 12.1 10.5 12.1 LWR/LWN1240 24 23 24.2 21 24.2 LWR/LWN1840 36 34.4 36.3 31.5 36.3 LWR/LWN1740 48 46 48.4 42 48.4 Adjustment of Threshold Levels (D1/D5) Pin 7 of the D-SUB connector allows for adjustment of the threshold levels of D1 and D5. Both levels are influenced by the voltage divider Rx / Ry . Resistor Rx to pin 3 (VCC) lowers the levels, whereas Ry to pin 1 (GND1) increases them (see fig. 20). D-SUB (female) 8 VCC 7 6 D-adj 9 Rx 06148b 5 4 3 2 1 GND1 Ry Change threshold Fig. 20 Wiring to adjust both threshold levels of option D1 or D5 SD: Shutdown Reduces the output power to approx. 1W, but the converter is not fully disabled. In a no-load condition, Vo drops below 6.2V; see fig. 21. In double-output models, only output 2 is influenced. Output voltage Table 18: Shutdown conditions 05175b V 5 Voltage VSD on shutdown pin Result 3 < 0.7 V Converter disabled (Po approx. 1 W) 2.0 V or open Converter enabled 1 0 0.2 0.4 0.6 0.8 1 1.2 A Output current Fig. 21 Output voltage versus output current, while the shutdown is activated (Vi = Vinom). tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 25 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Sys-OK: Status This function allows in a battery charger application for checking, whether the output is correctly following the external control signal at the R-input (coming for instance from the temperature sensor). The logic is shown in table 19. Table 19: System OK (M1 with external battery sensor) System Status Input V control VBat VBat sensorsignal theoretical measured Sys-OK Output System OK OK 2.7 V 27 V 27 V Low ohmic Battery overcharged / temp. sensor defect / control voltage to high OK 2.7 V 27 V 28 V High ohmic Overload, converter cannot follow the control signal OK 2.7 V 27 V 24 V High ohmic Output does not follow control signal, since battery would be overcharged OK 3.0 V 30 V 27 V High ohmic System OK OK 2.5 V 25 V 25 V Low ohmic R: Adjustment of Vo or Vo2 The R input allows external adjustment of the output voltage in the range of 50% to 110% Vo nom. Double-output models allow only adjustment of output 2 (connected to the terminals 6, 7, 8 and 9). This enables asymmetric output voltage configuration. Adjustment can be achieved via a resistor or an external voltage source (in the range of 1.25 - 2.75 V). Note: If the R input is not connected: Vo or Vo2 Vo nom. a) Adjustment by an external resistor: Resistor Rext1, connected between R (pin 2) and GND1 (pin 1) of the D-SUB connector or according to fig. 20. Vo Vo = 50 - 100% Vo nom. Rext1 4 k * --------- Vonom-Vo Resistor Rext2, connected between R (pin 2) and VCC (pin 3) of the D-SUB connector or according to fig. 20. Vo - 2.5 V Vo = 100 - 110% Vonom. R ext2 4 k * --------------- 2.5 V*(Vo / Vonom-1) Note: If the R function is not included in M1 or M2, refer to figure 20 how to connect Rext1 or Rext2 . b)Adjustment by an external control voltage Vext (1.25 - 2.75 V), connected between R (pin 2) and GND (pin 1) of the D-SUB connector or according to fig. 20. Vo Vext Vext 2.5 V * ----- Vo Vo nom * ---- Vonom 2.5 V Caution: To prevent damage, Vext should not exceed 3V, nor be negative. Note: If longer wires are used to connect the R input at the D-SUB connector, the wiring to pin 1 (GND1) should be done as star point connection. If wired differently, the output voltage setting may be adversely affected. In battery charging systems, an external battery temperature sensor (see Accessories) can be connected to optimize Vo. However, adjustment using the R input (pin 2 of D-SUB) is possible as well. The above shown formulas are valid, but Vonom stands for the voltage with open R input (= Vosafe). F: Built-in Second Fuse A built-in second fuse in the neutral line provides safe phase-to-phase connection at low mains voltages (e.g., USA 120V/208V / 60Hz systems). The built-in second fuse also enables safe connection to the mains, where phase and neutral are not defined or cannot be identified, as e.g., in the case of plug and socket connection to the mains via German Schuko-plugs; see also Safety and Installation Instructions. Option F limits the DC input voltage to 250 V. Q: Reverse Polarity Protection EW models have no bridge rectifier at the input. To provide reverse polarity protection, an additional diode can be fitted. However this lowers the efficiency by approximately 1%. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 26 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters K2: System Connectors For installation in systems using pre-assembled harnesses the converters are available with system connectors. They are UL-listed, approved for currents up to 15 A at -40 to 105 C. The mating system connectors with screw terminals and retainers are delivered together with every converter with option K2. Use max. 2.5 mm2 (AWG 12) solid or stranded wires, or max. 1.5 mm2 (AWG 14) stranded wires with crimp termination, stripped length 6 mm. Tightening torque of input/output terminals: max. 0.79 Nm (7 lbs.in.). Fig. 22 System connectors Option K2 G: RoHS RoHS compliant for all six substances. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 27 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Accessories Shock-Resistant Wall Mounting DIN-Rail Fixing Brackets HZZ00624-G Set of wall mounting brackets HZZ00618-G (UMB-W) For DIN-Rail vibration-proof fastening, use a set of brackets HZZ00624-G (DMB-EWG). For heavy-duty application 2 sets ( = 4 brackets) are preferable. Content: 2 clamps, 4 countersunk screws M4, washers, and springwashers 10068 4.2 33 0.5 49 8 18 3 12055 Fig. 23 Wall mounting with mounting brackets HZZ00618-G Fig. 24 DIN-rail fixing bracket HZZ00624-G (DMB-EWG) Protective Covers over Terminals Protective covers are available to avoid touching of the terminals. HZZ01219-G and HZZ01219A-G (protective covers with cutouts) contains in a bag a plastic cover with length A = 26.5 mm for the primary terminals and a second one with length A = 59 mm for the secondary terminals; see figures below. Content: 2 covers to protect the input and output terminals. Fig. 25a Protective covers HZZ01219-G Fig. 25b Protective covers with cut-outs HZZ01219A-G tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 28 of 29 W Series 125, 250 Watt AC-DC and DC-DC DIN-Rail Converters Battery Temperature Sensor To charge lead-acid batteries according to their temperature different types of temperature sensors are available, (see Battery Charging and Temperature Sensor in this data sheet and the Temperature Sensor data sheet at belfuse.com/power-solutions. 05191a + D-SUB Converter R 9.8 (0.04") 09125a L 56 (2.2") European Projection 9.8 (0.4") 26 (1.02") VCC GND Vo+ - white n brow en e r g 2 3 1 Fuse + Vo- adhesive tape - Battery Temperature sensor Load L = 2 m (standard length) other cable lengths on request Fig. 26 Temperature sensor Fig. 27 Connection of temperature sensor Table 20: Sensors for converters with standard R-input Battery voltage nom. [V] Sensortype Cell voltage [V] Cell temp. coefficient [mV/K] Cable length [m] 12 S-KSMH12-2.27-30-2 2.27 -3.0 2 12 S-KSMH12-2.27-35-2 2.27 -3.5 2 24 S-KSMH24-2.27-30-2 2.27 -3.0 2 24 S-KSMH24-2.27-35-2 2.27 -3.5 2 24 S-KSMH24-2.31-35-0 2.31 -3.5 4.5 24 S-KSMH24-2.31-35-2 2.31 -3.5 2 24 S-KSMH24-2.35-35-2 2.35 -3.5 2 48 S-KSMH48-2.27-30-2 2.27 -3.0 2 48 S-KSMH48-2-27-35-2 2.27 -3.5 2 For additional accessory product information, see the accessory data sheets listed with each product series or individual model at our website. NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. tech.support@psbel.com belfuse.com/power-solutions BCD20020-G Rev AF, 26-Jan-2021 (c) 2021 Bel Power Solutions & Protection Page 29 of 29