PET2000-NAS446 is a 2000 Watt AC to DC, power-factor corrected (PFC) power supply that converts standard AC power into a main output of +12 VDC. PET2000-NAS446 utilizes full digital control architecture for greater efficiency, control and functionality. The unit includes four 450 mm long cables with 20 pin connectors. The four connectors are intended to be attached directly to individual mining load boards. This power supply meets international safety standards and displays the CE-Mark for the European Low Voltage Directive (LVD). * Best-in-class, 80 PLUS "Platinum" Efficiency * Auto-Selected Input Voltage Ranges: 90 - 140 VAC, 180 - 264 VAC * AC Input with Power Factor Correction * 2000 W Continuous Output Power Capability * Output cable wire harness set included * Always-On 12 V Standby Output * Full Digital Controls for Improved Performance * High Density Design * Small Form Factor: 73.5 x 40.0 x 331.6 mm (2.89 x 1.57 x 13.05 in) * Power Management Bus Communication Interface for Control, Programming and Monitoring * Status LED with Fault Signaling * * * * Cryptocurrency Mining Blockchain Applications Networking Switches Servers & Routers PET2000-NAS446 2 PET 2000 - Product Family Power Level Dash PET Front-Ends 2000 W N A Sxxx Airflow Input Suffix N: Normal (Rear to front) A: AC S446: The PET2000-NAS446 AC/DC power supply is a fully DSP controlled, highly efficient front-end power supply. It incorporates resonance-soft-switching technology to reduce component stresses, providing increased system reliability and very high efficiency. With a wide input operational voltage range the PET2000-NAS446 maximizes power availability in demanding server, network, and other high availability applications. The supply is fan cooled and ideally suited for integration with a matching airflow path. The PFC stage is digitally controlled using a state-of-the-art digital signal processing algorithm to guarantee best efficiency and unity power factor over a wide operating range. The DC/DC stage uses soft switching resonant techniques in conjunction with synchronous rectification. The always-on standby output provides power to external power distribution and management controllers. Status information is provided with a front-panel LED. In addition, the power supply can be controlled and the fan speed set via the I2C bus. The I2C bus allows full monitoring of the supply, including input and output voltage, current, power, and inside temperatures. Cooling is managed by a fan controlled by the DSP controller. The fan speed is adjusted automatically depending on the actual power demand and supply temperature and can be overridden through the I2C bus. Figure 1. PET2000-NAS446 Block Diagram Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long-term reliability and cause permanent damage to the supply. PARAMETER CONDITIONS / DESCRIPTION Vi maxc Continuous Maximum Input MIN MAX UNITS 264 VAC tech.support@psbel.com PET2000-NAS446 3 General Condition: TA = 0... 55 C, unless otherwise noted. PARAMETER Vi nom Nominal Input Voltage Vi DESCRIPTION / CONDITION MIN NOM MAX UNIT Rated Voltage High Line (Vi nom HL) 200 230 240 VAC Rated Voltage Low Line (Vi nom LL) 100 115 127 VAC Normal operating (Vi min HL to Vi max HL), High Line 180 264 VAC Normal operating (Vi min LL to Vi max LL), Low Line 90 140 VAC Input Voltage Ranges Ii max Maximum Input Current Ii inrush Inrush Current Limitation fi Vi =100 VAC, I1 = 83 A, ISB = 3 A 13 Vi = 200 VAC, I1 =167 A, ISB =3 A (North America) 12 Vi = 200 VAC, I1 = 145 A, ISB = 3 A (other than North 10 Vi = 220 VAC, I1 = 158 A, ISB = 3 A (America) 10 Vi = 230 VAC, I1 = 167 A, ISB = 3 A 10 Vi min to Vi max, TNTC = 25C, 5 ms 10 Input Frequency PF Power Factor 63 ARMS Ap 47 50/60 Vi = 230 VAC, 10% load 0.8 0.88 W/VA Hz Vi = 230 VAC, 20% load 0.9 0.95 W/VA Vi = 230 VAC, 50% load 0.9 0.997 W/VA Vi = 230 VAC, 100% load 0.95 0.999 W/VA THD Total Harmonic Distortion TBD Vi on Turn-on Input Voltage1 Ramping up 87 Vi off Turn-off Input Voltage2 Ramping down 82 Vi = 230 VAC, 10% load 90 91.6 % Vi = 230 VAC, 20% load 91 93.8 % Vi = 230 VAC, 50% load 94 94.4 % Vi = 230 VAC, 100% load 91 92.8 % Vi = 230 VAC, 50% load, 0 18 ms Vi = 230 VAC, 100% load, 0 9 ms Vi = 90 to 264 VAC, 0 to 100% load 70 ms Efficiency2 TV1 holdup Hold-up Time V1 TVSB holdup 1 2 Hold-up Time VSB TBD % 90 VAC 87 VAC The Front-End is provided with a minimum hysteresis of 3 V during turn-on and turn-off within the ranges Efficiency measured without fan power per EPA server guidelines Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 4 4.1 INPUT CONNECTOR The PET2000-NAS446 power supply is available with IEC 60320-C14. Outside North America the IEC 60320-C14 has a limited current of 10 A and is allowed to operate up to 70 C ambient. Below table shows the maximum rated operating conditions for the different input connector options. The applied operating condition must remain within these conditions to allow safety compliant operation. See also 10.3 MAXIMUM OUTPUT POWER VERSUS INLET TEMPERATURE FOR SAFETY COMPLIANCY for detailed derating curves. TYPE INPUT CONNECTOR REGION APPLIED RATED MAINS AC VOLTAGE3 MAX I 4 MAXIMUM DERATED I1 AT MAXIMUM TA 100 to 127 VAC 83 A 50 A at TA = 70C 200 to 240 VAC 167 A 80 A at TA = 70C 100 to 127 VAC 67 A 17.5 A at TA = 65C 200 to 220 VAC 145 A 32.5 A at TA = 65C 220 to 230 VAC 158 A 40 A at TA = 65C 230 to 240 VAC 167 A 43 A at TA = 65C North America PET2000-NAS446 IEC 60320-C14 Other than North America 4.2 INPUT FUSE Time-lag 16 A input fuse (5 x 20 mm) in series with the L-line inside the power supply protects against severe defects. The fuse is not accessible from the outside and is therefore not a serviceable part. 4.3 INRUSH CURRENT The AC-DC power supply exhibits an X-capacitance of only 5.9 F, resulting in a low and short peak current, when the supply is connected to the mains. The internal bulk capacitor will be charged through an NTC which will limit the inrush current. NOTE: Do not repeat plug-in / out operations within a short time, or else the internal in-rush current limiting device (NTC) may not sufficiently cool down and excessive inrush current or component failure(s) may result. 4.4 INPUT UNDER-VOLTAGE If the sinusoidal input voltage stays below the input undervoltage lockout threshold Vi on, the supply will be inhibited. Once the input voltage returns within the normal operating range, the supply will return to normal operation again. 4.5 POWER FACTOR CORRECTION Power factor correction (PFC) is achieved by controlling the input current waveform synchronously with the input voltage. A fully digital controller is implemented giving outstanding PFC results over a wide input voltage and load ranges. The input current will follow the shape of the input voltage. If for instance the input voltage has a trapezoidal waveform, then the current will also show a trapezoidal waveform. 3 Nominal grid voltage, does not include typical fluctuations of 10%; e.g. listed range 230-240 VAC allows operation at 230 VAC -10% to 240 VAC +10%, so 207 ... 264 VAC actual voltage to account for grid fluctuations 4 Maximum Input current for PET2000-NAS446 at TA = 55C tech.support@psbel.com PET2000-NAS446 5 4.6 EFFICIENCY High efficiency (see Figure 2) is achieved by using state-of-the-art silicon power devices in conjunction with soft-transition topologies minimizing switching losses and a full digital control scheme. Synchronous rectifiers on the output reduce the losses in the high current output path. The speed of the fan is digitally controlled to keep all components at an optimal operating temperature regardless of the ambient temperature and load conditions. Figure 2. Efficiency vs. Load current (ratio metric loading) Figure 3. Power factor vs. Load current Figure 4. Inrush current, Vi = 230Vac, 90 CH2: Vi (200V/div), CH3: Ii (5A/div) Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 6 5.1 MAIN OUTPUT V1 General Condition: TA = 0...55 C, Vi = 230 VAC unless otherwise noted. PARAMETER V1 nom Nominal Output Voltage V1 set Output Setpoint Accuracy dV1 tot Static Regulation P1 nom P1 peak Nominal Output Power5 Peak Output Power6 I1 nom I1 nom Output Current red I1 peak I1 peak red Peak Output Current6 DESCRIPTION / CONDITION -0.5 Vi min LL to Vi max HL, 0 to 100% I1 nom +1 %V1 nom W Vi min HL to Vi max HL 2100 W Vi min LL to Vi max LL 110 W Vi min HL to Vi max HL 0 167 ADC Vi min LL to Vi max LL 0 83 ADC Vi min HL to Vi max HL 175 ADC 110 ADC 120 mVpp 150 mVpp 120 mVpp Vi min HL to Vi max HL, 0.5 I1 nom Thermal Drift 0.5 I1 nom, TA = 0 ... 55C Recovery Time -1 VDC 1000 Line Regulation trec %V1 nom Vi min LL to Vi max LL dV1 line dV1 lt +0.5 W dV1 temp Load Transient Response UNIT 2000 Load Regulation dV1 lt MAX Vi min HL to Vi max HL dV1 load Output Ripple Voltage7 NOM 12.0 0.5 I1 nom, TA = 25C Vi min LL to Vi max LL Vi min LL to Vi max HL, 0 to 75% I1 nom, Cext = 0 mF Vi min LL to Vi max HL, 75 to 100% I1 nom, Cext = 0 mF Vi min LL to Vi max HL, 0 to 100% I1 nom, Cext 1 mF/Low ESR 0 to 100% I1 nom V1 pp MIN -30 -24 V1 dyn Dynamic Load Regulation tV1 rise Output Voltage Rise Time V1 = 10...90% V1 nom, Cext < 10 mF tV1 ovr sh Output Turn-on Overshoot 0 to 100% I1 nom CV1 load Capacitive Loading 24 -0.4 I1 = 50% I1 nom, I1 = 5 ... 100% I1 nom, Cext = 0 mF I1 = 10% I1 nom, I1 = 0 ... 10% I1 nom, Cext = 0 mF dI1/dt = 1A/s, recovery within 1% of V1 nom I1 = 60% I1 nom, I1 = 5 ... 167 A, f = 50 ... 5000 Hz, Duty cycle = 10 ... 90%, Cext = 2 ... 30 mF 0 mV 11.4 1 0 mV mV/C 0.35 0.6 VDC 0.35 0.6 VDC 0.5 1 ms 12.6 V 30 ms 0.6 V 30 mF 5 See also chapter TEMPERATURE AND FAN CONTROL Peak combined power for all outputs must not exceed 2100 W; maximum of peak power duration is 20 seconds without asserting the SMBAlert signal 7 Measured with a 10 uF low ESR capacitor in parallel with a 0.1 uF ceramic capacitor at the point of measurement 6 tech.support@psbel.com PET2000-NAS446 7 5.2 STANBY OUTPUT VSB General Condition: TA = 0...55 C, Vi = 230 VAC unless otherwise noted. PARAMETER DESCRIPTION / CONDITION MIN VSB nom Nominal Output Voltage VSB set Output Setpoint Accuracy dVSB tot Total Regulation Vi min LL to Vi max HL, 0 to 100% ISB nom PSB nom Nominal Output Power Vi min LL to Vi max HL PET2000-NAS446 ISB nom Output Current Vi min LL to Vi max HL PET2000-NAS446 VSB pp dVSB load Output Ripple Voltage7 -1 -5 dVSB line Line Regulation Vi min HL to Vi max HL, ISB nom = 0 A dVSB temp Thermal Drift Dynamic Load Regulation tVSB rise Output Voltage Rise Time tVSB ovr sh Output Turn-on Overshoot 0 to 100% ISB nom CVSB load +1 %VSBnom +1 %VSBnom Capacitive Loading VDC W 3 ADC 120 mVpp -360 -24 VSB dyn Recovery Time 0 PET2000-NAS446 ISB = 0 A ISB = 50% ISB nom, ISB = 5 ... 100% ISB nom, dISB/dt = 1A/s, recovery within 1% of VSB nom ISB = 50% ISB nom, ISB = 5 ... 100% ISB nom, dISB/dt = 1A/s, recovery within 1% of VSB nom ISB = 1A, ISB = 0 ... ISB nom, f = 50 ... 5000 Hz, Duty cycle = 10 ... 90%, Cext = 0 ... 5 mF VSB = 10...90% VSB nom, Cext < 1 mF trec UNIT 36 Vi min LL to Vi max HL, 0 to 100% ISB nom, Cext = 0 mF 0 to 100% ISB nom Load Transient Response MAX 12.1 ISB = 0 A, TA = 25C Load Regulation VSB dyn NOM 0 mV 24 -0.5 0.2 0.3 VDC 1 2 ms 12.6 V 5 ms 11.4 1 mV mV/C 2 0 0.6 V 3100 F Figure 5. Turn-On AC Line 230VAC, full load (200ms/div) CH1: Vin (400V/div) CH2: PWOK_H (5V/div) CH3: V1 (2V/div) CH4: VSB (2V/div) Figure 6. Rise time V1 at 230VAC, full load (2ms/div) CH3: V1 (2V/div) Figure 7. Rise time VSB at 230VAC, full load (2ms/div) CH4: VSB (2V/div) Figure 8. Turn-Off AC Line 230VAC, full load (20ms/div) CH1: Vin (400V/div) CH2: PWOK_H (5V/div) CH3: V1 (2V/div) CH4: VSB (2V/div) Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 8 Figure 9. Turn-Off AC Line 230VAC, half load (20ms/div) CH1: Vin (400V/div) CH2: PWOK_H (5V/div) CH3: V1 (2V/div) CH4: VSB (2V/div) Figure 10. Short circuit on V1 (10ms/div) CH3: V1 (2V/div) CH4: I1 (100A/div) Figure 11. Load transient V1, 83 to 167A (500s/div) CH3: V1 (200mV/div) CH4: I1 (50A/div) Figure 12. Load transient V1, 167 to 83A (500s/div) CH3: V1 (200mV/div) CH4: I1 (50A/div) 5.3 OUTPUT GROUND / CHASSIS CONNECTION The output return path serves as power and signal ground. All output voltages and signals are referenced to these pins. To prevent a shift in signal and voltage levels due to ground wiring voltage drop a low impedance ground plane should be used as shown in Figure 13. Alternatively, separated ground signals can be used as shown in Figure 14. In this case the two ground planes should be connected together at the power supplies ground pins. NOTE: Within the power supply the output GND pins are connected to the Chassis, which in turn is connected to the Protective Earth terminal on the AC inlet. Therefore, it is not possible to set the potential of the output return (GND) to any other than Protective Earth potential. Figure 13. Common low impedance ground plane tech.support@psbel.com PET2000-NAS446 9 Figure 14. Separated power and signal ground PARAMETER F Input fuse (L) V1 OV OV Threshold V1 tV1 OV OV Trip Time V1 VSB OV OV Threshold VSB tVSB OV OV Trip Time VSB I1 OC Slow OC Limit V1 tV1 OC Slow OC Trip time V1 IV1 OC Fast Fast OC Limit V1 tV1 OC Fast DESCRIPTION / CONDITION MIN 13.3 A VDC 1 ms 14.5 VDC 1 ms Over Current Limitation, Latch-off, Vi min HL to Vi max HL 175 ADC Over Current Limitation, Latch-off, Vi min LL to Vi max LL 88 ADC 13.3 13.9 UNIT 14.5 Over Voltage V1 Protection, Latch-off Type 13.9 Over Voltage V1 Protection, Automatic retry each 1s Over Current Limitation, Latch-off time 20 s Fast Over Current Limit., Latch-off, Vi min HL to Vi max HL 180 ADC Fast Over Current Limit., Latch-off, Vi min LL to Vi max LL 115 ADC Fast OC Trip time V1 Fast Over Current Limitation, Latch-off time Max Short Circuit Current V1 V1 < 3 V tV1 SC Short Circuit Regulation Time V1 < 3 V, time until I1 is limited to < I1 sc ISB OC OC Limit VSB Over Current Limitation, Constant-Current Type OC Trip time VSB Over Current Limit., time until ISB is limited to ISB OC Over Temperature See chapter 10.2 TSD MAX 16 I1 SC tVSB OC NOM Not use accessible, time-lag (T) 55 3.3 ms 180 A 2 ms 5.5 A 1 ms C 6.1 OVERVOLTAGE PROTECTION PET2000-NAS446 front-end provides a fixed threshold overvoltage (OV) protection implemented with a HW comparator for both the main and the standby output. Once an OV condition has been triggered on the main output, the supply will shut down and latch the fault condition. The latch can be unlocked by disconnecting the supply from the AC mains or by toggling the PSON_L input. The standby output will continuously try to restart with a 1 s interval after OV condition has occurred. 6.2 UNDERVOLTAGE DETECTION Both main and standby outputs are monitored. LED and PWOK_H pin signal if the output voltage exceeds 5% of its nominal voltage. The main output will latch off if the main output voltage V1 falls below 10 V (typically in an overload condition) for more than 55 ms. The latch can be unlocked by disconnecting the supply from the AC mains or by toggling the PSON_L input. If the standby output leaves its regulation bandwidth for more than 2 ms then the main output is disabled to protect the system. Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 10 6.3 CURRENT LIMITATION MAIN OUTPUT The main output exhibits a substantially rectangular output characteristic controlled by a software feedback loop. If output current exceeds IV1 OC Fast it will reduce output voltage in order to keep output current at IV1 OC Fast. If the output voltage drops below ~10.0 VDC for more than 55 ms, the output will latch off (standby remains on), see also Undervoltage Detection. Figure 15. Current Limitation on V1 at Vi = 90 ... 140 VAC Figure 16 .Current Limitation on V1 at Vi = 180 ... 264 VAC The power supply operating parameters can be accessed through I2C interface. For more details refer to chapter I2C / POWER MANAGEMENT BUS COMMUNICATION and document URP.00686 (PET Front-End Power Management Bus Communication Manual). PARAMETER DESCRIPTION / CONDITION Vi mon Input RMS Voltage Vi min LL Vi Vi max HL Ii mon Input RMS Current Pi mon V1 mon I1 mon P1 nom True Input Power MAX UNIT +3 VAC -3 +3 % Ii 6.7 Arms -0.2 +0.2 Arms Pi > 500 W -4 +4 % 50 W < Pi 500 W -20 +20 W -0.1 +0.1 VDC -1 +1 % I1 > 50 A V1 Output Power -3 NOM Ii > 6.7 Arms V1 Voltage V1 Current MIN 5 A < I1 50 A -0.5 +0.5 ADC Pi > 1000 W -1 +1 % 50 W < Pi 1000 W -10 +10 W VSB mon VSB Voltage -0.1 +0.1 VDC ISB mon VSB Current -0.1 +0.1 ADC TA mon Inlet Temperature -3 +3 C TA min TA TA max tech.support@psbel.com PET2000-NAS446 11 8.1 ELECTRICAL CHARACTERISTICS PARAMETER DESCRIPTION / CONDITION IIL,H Maximum Input Sink or Source Current Rpull up Internal Pull up Resistor to internal 3.3 V RLOW RHIGH MIN VI = -0.2 V to +3.5 V NOM -1 MAX 1 10 Maximum external Pull down Resistance to GND to obtain Low Level Minimum external Pull down Resistance to GND to obtain High Level UNIT mA k 1 50 k k PWOK_H VOL Output Low Level Voltage V1 or VSB out of regulation, VIsink < 4 mA 0 0.4 V VOH Output High Level Voltage V1 and VSB in regulation, Isource < 0.5 mA 2.4 3.5 V 4 mA Rpull up IOL Internal Pull up Resistor to internal 3.3 V 1 VO < 0.4 V Maximum Sink Current k 8.2 PSON_L INPUT The PSON_L is an internally pulled-up (3.3 V) input signal to enable/disable the main output V1 of the front-end. With low level input the main output is enabled. This active-low pin is also used to clear any latched fault condition. The PSON_L can be either controlled by an open collector device or by a voltage source. 8.3 PWOK_H OUTPUT The PWOK_H is an open drain output with an internal pull-up to 3.3 V indicating whether both VSB and V1 outputs are within regulation. This pin is active-high. An external pull down resistor ensures low level when there is no power supply seated. When combining PWOK_H outputs of several power supplies, circuits as shown in Figure 17 should be used. Figure 17. PWOK_H Output 8.4 PRESENT_L OUTPUT The PRESENT_L pin is wired through a 100 Ohms resistor to internal GND within the power supply. This pin does indicate that there is a power supply present in this system slot. An external pull-up resistor has to be added within the application. Current into PRESENT_L should not exceed 5 mA to guarantee a low level voltage if power supply is seated. PSU PDU Vext PRESENT_L 100 Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 12 Figure 18. PRESENT_L connection 8.5 SIGNAL TIMING AC Input AC Input tAC drop2 VSB tV1 rise VSB tV1 holdup tVSB rise tAC VSB V1 tVSB V1 del V1 tV1 off tAC drop1 PSON_L tAC V1 PSON_L tPWOK_H holdup PWOK_H tPWOK_H warn tPWOK_H del PWOK_H Figure 19. AC turn-on timing AC Input VSB Figure 20. AC short dips AC Input tVSB holdup tVSB off VSB tV1 holdup V1 PSON_L PWOK_H tV1 off tPWOK_H holdup tPWOK_H warn Figure 21. AC long dips tPSON_L V1 on tV1 rise V1 tPSON_L PWOK_H tPSON V1 off tV1 off tPWOK_H low PSON_L PWOK_H tPWOK_H del tPWOK_H warn Figure 22. PSON_L turn-on/off timing tech.support@psbel.com PET2000-NAS446 13 DESCRIPTION / CONDITION PARAMETER tAC VSB AC Line to 90% VSB tAC V1 AC Line to 90% V1 PSON_L = Low VSB to V1 delay PSON_L = Low tVSB V1 del MIN NOM 1.5 50 150 MAX UNIT 1.5 s 4 8 s 1000 ms 0.5 I1 nom, ISB nom 17 ms 0.7 I1 nom, ISB nom 13 ms tV1 rise V1 rise time See chapter OUTPUT tVSB rise VSB rise time See chapter OUTPUT tAC drop1 AC drop without V1 leaving regulation I1 nom, ISB nom 5 ms tAC drop2 AC drop without VSB leaving regulation I1 nom, ISB nom 70 ms tV1 holdup Loss of AC to V1 leaving regulation See chapter INPUT See chapter INPUT 200 ms tVSB holdup Loss of AC to VSB leaving regulation tPWOK_H del Outputs in regulation to PWOK_H asserted 100 tPWOK_H warn Warning time from de-assertion of PWOK_H to V1 leaving regulation 0.15 ms 10 ms tPWOK_H holdup Vi nom HL, I1 nom, ISB nom Loss of AC to PWOK_H de-asserted tPWOK_H low Time PWOK_H is kept low after being de-asserted tPSON_L V1 on Delay PSON_L active to V1 in regulation tPSON_L V1 off Delay PSON_L de-asserted to V1 disabled 150 100 Cext = 0 mF ms 5 10 20 ms 2 3 4 ms Delay PSON_L de-asserted to PWOK_H de-asserted 1 2 ms tV1 off Time V1 is kept off after leaving regulation 1 s tVSB off Time VSB is kept off after leaving regulation 1 s tPSON_L PWOK_H 8.6 LED INDICATOR The front-end has one front LED showing the status of the supply. The LED is bi-colored: green and amber, and indicates AC and DC power presence and warning or fault conditions. Table 1 lists the different LED status. OPERATING CONDITION 9 LED SIGNALING No AC or AC Line in UV condition, VSB not present from paralleled power supplies Off PSON_L High Hot-Standby Mode Blinking Green 1 Hz No AC or AC Line in UV condition, VSB present from paralleled power supplies V1 or VSB out of regulation Over temperature shutdown Solid Amber Output over voltage shutdown (V1 or VSB) Output over current shutdown (V1 or VSB) Fan error (>15%) Over temperature warning Blinking Amber 1 Hz Minor fan regulation error (>5%, <15%) Firmware boot loading in process Blinking Green 2 Hz Outputs V1 and VSB in regulation Solid Green Table 1. LED Status 8 9 At repeated ON-OFF cycles the start-up times may increase by 1s The order of the criteria in the table corresponds to the testing precedence in the controller Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 14 The PET front-end is a communication Slave device only; it never initiates messages on the I2C/SMBus by itself. The communication bus voltage and timing is defined in Table 2 and further characterized through: * * * * * * 3.3V The SDA/SCL IOs use 3.3 V logic levels External pull-up resistors on SDA/SCL required for correct signal edges Full SMBus clock speed of 100 kbps Clock stretching limited to 1 ms SCL low time-out of >25 ms with recovery within 10 ms Recognizes any time Start/Stop bus conditions 3.3V RX TX_EN 10k Rpull-up TX SDA/SCL DSP or EEPROM Figure 23. Physical layer of communication interface Communication to the DSP or the EEPROM will be possible as long as the input AC voltage is provided. If no AC is present, communication to the unit is possible as long as it is connected to a life VSB output (provided e.g. by the redundant unit). If only V1 is provided, communication is not possible. PARAMETER DESCRIPTION CONDITION MIN MAX UNIT SCL / SDA ViL Input low voltage -0.5 1.0 V ViH Input high voltage 2.3 3.5 V Vhys Input hysteresis VoL Output low voltage tr Rise time for SDA and SCL tof Output fall time ViHmin ViLmax 10 pF < Cb < 400 pF Ii Input current SCL/SDA 0.1 VDD < Vi < 0.9 VDD Ci Internal Capacitance for each SCL/SDA fSCL SCL clock frequency Rpull-up External pull-up resistor fSCL 100 kHz tHDSTA Hold time (repeated) START fSCL 100 kHz 4.0 s tLOW Low period of the SCL clock fSCL 100 kHz 4.7 s tHIGH High period of the SCL clock fSCL 100 kHz 4.0 s tSUSTA Setup time for a repeated START fSCL 100 kHz 4.7 s tHDDAT Data hold time fSCL 100 kHz 0 tSUDAT Data setup time fSCL 100 kHz 250 tSUSTO Setup time for STOP condition fSCL 100 kHz 4.0 s tBUF Bus free time between STOP and START fSCL 100 kHz 5 ms 1 0.15 3 mA sink current 1 V 0 0.4 V 20+0.1Cb1 300 ns 1 20+0.1Cb 250 ns -10 10 A 50 pF 0 100 kHz 1000 ns / Cb1 3.45 s ns Cb = Capacitance of bus line in pF, typically in the range of 10...400 pF Table 2. I2C / SMBus Specification tech.support@psbel.com PET2000-NAS446 tof 15 tLOW tHIGH tLOW tr SCL tSUSTA tHDSTA tHDDAT tSUDAT tSUSTO tBUF SDA Figure 24. I2C / SMBus Timing ADDRESS SELECTION The address for I2C communication can be configured by pulling address input pins A2, A1 and A0 either to GND (Logic Low) or leave them open (Logic High). An internal pull up resistor will cause the A2 / A1 / A0 pin to be in High Level if left open. A fixed addressing offset exists between the Controller and the EEPROM. I2C Address Controller EEPROM A1 A0 0 0 0xB0 0xA0 0 1 0 0xB2 0xA2 0xB4 0xB6 0xA4 0xA6 1 1 1 Table 3. Address and protocol encoding 9.1 SMBALERT_L OUTPUT The SMBALERT_L signal indicates that the power supply is experiencing a problem that the system agent should investigate. This is a logical OR of the Shutdown and Warning events. It is asserted (pulled Low) at Shutdown or Warning events such as reaching temperature warning/shutdown threshold of critical component, general failure, over-current, over-voltage, undervoltage or low-speed of a failed fan. This signal may also indicate the power supply is operating in an environment exceeding the specified limits. The SMBAlert signal is asserted simultaneously with the LED turning to solid amber or blinking amber. PARAMETER DESCRIPTION / CONDITION MIN NOM MAX UNIT 12 V SMB_ALERT_L Vext Maximum External Pull up Voltage IOH Maximum High Level Leakage Current No Failure or Warning condition, VO = 12 V VOL Output Low Level Voltage Failure or Warning condition, Isink < 4 mA Rpull up IOL Internal Pull up Resistor to internal 3.3 V Maximum Sink Current 0 10 A 0.4 V 4 mA None VO < 0.4 V Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 16 10.1 FAN CONTROL To achieve best cooling results sufficient airflow through the supply must be ensured. Do not block or obstruct the airflow at the rear of the supply by placing large objects directly at the output connector. The PET2000-NAS446 is provided with a rear to front airflow, which means the air enters through the DC-output of the supply and leaves at the AC-inlet side, as shown in Figure 25. The PET2000-NAS446 supply has been designed for horizontal operation. Airflow Figure 25. Airflow direction PET2000-NAS446 The fan inside the supply is controlled by a microprocessor. The rpm of the fan is adjusted to ensure optimal supply cooling and is a function of output power. Three different curves are selected based on input voltage and inlet temperature. With standby output loaded the fan speed minimum is limited to ensure enough cooling of circuits providing standby power. Figure 26 illustrates the programmed fan curve. Figure 26. Fan speed vs. main output load tech.support@psbel.com PET2000-NAS446 17 10.2 TEMPERATURE MONITOR AND OVER TEMPERATURE PROTECTION PET2000-NAS446 provides access via I2C to the measured temperatures of in total 6 sensors within the power supply, see Table 4. The microprocessor is monitoring these temperatures and if warning threshold of one of these sensors is reached it will set fan to maximum speed. If temperatures continue to rise above shut down threshold the main output V1 (or VSB if auxiliary converter is affected) will be disabled. At the same time the warning or fault condition is signalized accordingly through LED, PWOK_H and SMBALERT_L. POWER MANAGEMENT BUS REGISTER WARNING THRESHOLD SHUTDOWN THRESHOLD Sensor located on control board close to DC end of PSU 8Dh 73C 78C Synchronous Rectifier Sensor located on secondary side of DC/DC stage 8Eh 95C 100C Primary Heat Sink Sensor located on primary heat sink 8Fh 87C 92C Output ORing Element Sensor located close to output D2h 100C 105C Auxiliary Converter Sensor located on secondary side on auxiliary rectifier D3h 80C 85C Bridge Rectifier Sensor located on heat sink for AC rectifier D4h 86C 91C TEMPERATURE SENSOR DESCRIPTION / CONDITION Inlet Air Temperature Table 4. Temperature sensor location and thresholds 10.3 MAXIMUM OUTPUT POWER VERSUS INLET TEMPERATURE FOR SAFETY COMPLIANCY For safety compliant operation the power supply must not exceed specified operating conditions specified herein. These operating conditions ensure the input AC connector is operated within its ratings. Between 0C and 55C power supply inlet temperature the maximum allowed output power is only depending on AC input connector type chosen, regional usage and the applied nominal input AC voltage. Above 55C the maximum output power is further reduced with rising temperature. Figure 27 illustrates the maximum current. Above 55C the power supply is adjusting the current limit level I1 OC Slow depending on input voltage range (100-127 VAC or 200240 VAC) and inlet temperature. Figure 27. Maximum I1 PET2000-NAS446 (IEC 60320-C14) Figure 28. Maximum P1 PET2000-NAS446 (IEC 60320-C14) Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 18 11.1 IMMUNITY PARAMETER DESCRIPTION / CONDITION ESD Contact Discharge ESD Air Discharge Radiated Electromagnetics Filed Burst Surge A A A A A RF Conducted Immunity IEC / EN 61000-4-6, Level 3, 10 Vrms, CW, 0.1 ... 80 MHz Voltage Dips and Interruptions IEC / EN 61000-4-11 Vi 230VAC / 50 Hz, 90% load, Phase 0, Dip 100% , duration 10 ms Vi 200VAC / 50 Hz, 70% load, Phase 0, Dip 30% , duration 500 ms Vi 200VAC / 50 Hz, 100% load, Phase 0, Dip 20% , duration 10 s 1. 11.2 CRITERION IEC / EN 61000-4-2, 8 kV, 25+25 discharges per test point (metallic case, LED, connector body) IEC / EN 61000-4-2, 15 kV, 25+25 discharges per test point (non-metallic user accessible surfaces) IEC / EN 61000-4-3, 10 V/m, 1 kHz/80% Amplitude Modulation, 1s Pulse Modulation, 10 kHz ... 2 GHz IEC / EN 61000-4-4, Level 3 AC port 2 kV, 1 minute IEC / EN 61000-4-5, Level 3 Line to Earth: 2 kV Line to Line: 1 kV A V1: A, VSB: A V1: A, VSB: A V1: A, VSB: A EMISSION PARAMETER Conducted Emission Radiated Emission DESCRIPTION / CONDITION CRITERION EN 55022 / CISPR 22: 0.15 ... 30 MHz, QP and AVG, single power supply EN 55022 / CISPR 22: 30 MHz ... 1 GHz, QP, single power supply Class A 6 dB margin Class A 6 dB margin Harmonic Emissions IEC 61000-3-2, Vi = 115 VAC / 60 Hz & 230 VAC / 50 Hz, 100% Load Class A AC Flicker IEC 61000-3-3, Vi = 230 VAC / 50Hz, 100% Load Pass Acoustical Noise Distance at bystander position, 25C, 50% Load 65 dBA Maximum electric strength testing is performed in the factory according to IEC/EN 60950, and UL 60950. Input-to-output electric strength tests should not be repeated in the field. Bel Power Solutions will not honor any warranty claims resulting from electric strength field tests. PARAMETER Agency Approvals Grade of Insulation Creepage / Clearance Electrical Strength Test DESCRIPTION / CONDITION Approved to latest edition of the following standards: UL/CSA60950-1, IEC60950-1 and EN60950-1. NEMKO, CB Input (L/N) to chassis (PE) Input (L/N) to output Output to chassis Primary (L/N) to chassis (PE) Primary to secondary Input to chassis Input to output (tested by manufacturer only) NOTES Approved Basic Reinforced None (Direct connection) Min. 2121 VDC 4242 VDC tech.support@psbel.com PET2000-NAS446 19 PARAMETER DESCRIPTION / CONDITION MIN Up to 1'000 m ASL TA NOM -20 - 3'048 10'600 m m -5 Linear derating from 1'000 to 3'048 m ASL Reduced output power10, up to 1'000 m ASL Extended Temp. Range Linear derating from 1'000 to 3'048 m ASL TS Storage Temperature Non-operational Altitude Operational, above Sea Level Non-operational, above Sea Level Shock, operational Half sine, 11ms, 10 shocks per direction, 6 directions Shock, non-operational Vibration, sinusoidal, operational Vibration, sinusoidal, non-operational Vibration, random, non-operational PARAMETER MTBF Mean time to failure PARAMETER Dimensions m 10 IEC/EN 60068-2-6, sweep 5 to 500 to 5 Hz, 1 octave/min, 5 sweep per axis IEC/EN 60068-2-64, 5 to 500 Hz, 1 hour per axis DESCRIPTION / CONDITION TA = 25C, according Telcordia SR-332, issue 3, GB, confidence level = 90% DESCRIPTION / CONDITION MIN Weight NOM C C C C 1 g peak 30 1 g peak g peak 4 g peak 0.025 g2/Hz MAX UNIT 860 MIN Width Heigth Depth UNIT +40 +55* +35 +45* +55 +70* +50 +60* +70 Ambient Temperature TA ext MAX kh NOM MAX UNIT 73.5 40.0 331.6 mm mm mm 1.1 kg See chapter 10.3 Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 20 Figure 29. Top and side view Figure 30. Front view Figure 31. Rear view 15.1 OUTPUT CONNECTOR PIN LOCATIONS Figure 32. Rear view Figure 33. Output wire harness set (length = 450 mm) - two pcs wire harnesses attached on each PSU tech.support@psbel.com PET2000-NAS446 21 JL1, JL2_black (GND), Harness 1 JL3, JL4_black (GND), Harness 2 JL1, JL2_yellow (V1), Harness 1 JL3, JL4_yellow (V1), Harness 2 J7 J4 Figure 34. Output connections PARAMETER DESCRIPTION / CONDITION MIN AC inlet PET2000-NAS446 : IEC 60320-C14 AC cord requirement Wire size Output connector on wire harness (JL1 to JL4) Output connector for signaling (J4) Output connector for external FAN (J7) Two harnesses. Totally 4 pcs 20 pin connectors (Molex 39-01-2200 or equivalent) Male 14-Pin connector (AMTEK 5BH1SDA88-14G05TU-00 or equivalent NOM MAX UNIT 10 16 Male 4-Pin connector (Molex: 39-31-0040 or equivalent) Female Mating connector (Molex: 15-06-0045 or equivalent) AWG 20 PIN 14 PIN 4 PIN 16.1 MATING OUTPUT CONNECTOR SPECIFICATION (on wire two wire harnesses) PIN SIGNAL NAME DESCRIPTION JL1-1 to JL1-5 JL1-11 to JL1-15 JL2-1 to JL2-5 JL2-11 to JL2-15 JL3-1 to JL3-5 JL3-11 to JL3-15 JL4-1 to JL4-5 JL4-11 to JL4-15 V1 (yellow) +12 VDC main output JL1-6 to JL1-10 JL1-16 to JL1-20 JL2-6 to JL2-10 JL2-16 to JL2-20 JL3-6 to JL3-10 JL3-16 to JL3-20 JL4-6 to JL4-10 JL4-16 to JL4-20 GND (black) Power ground (return) Table 5. Output pin assignment from Main Wire Harnesses Asia-Pacific Europe, Middle East North America +86 755 298 85888 +353 61 225 977 +1 408 785 5200 (c) 2019 Bel Power Solutions BCD.00974_002 PET2000-NAS446 22 16.2 MATING OUTPUT CONNECTOR SPECIFICATION (Signal connector J4) PIN SIGNAL NAME DESCRIPTION S1 GND Signal ground (return) GND +12 VDC S5 SDA I2C data signal line S6 SCL I2C clock signal line S7 PSON_L S8 S10 PWOK_H ALARM (SMB_ALERT_L) PRESENT_L S11 FAN TACHO S12 FAN PWM S2 S3 S4 Power supply on input, active-low S13 A0 Power OK signal output, active-high PSU ALARM SIGNAL SMB Alert signal output, active-low Power supply seated/connected, active-low External Tacho signal from J7-2 for external fan External PWM signal from J7-3 for external fan I2C address selection input S14 A1 I2C address selection input S9 16.3 MATING OUTPUT CONNECTOR SPECIFICATION (FAN supply connector J7) PIN SIGNAL NAME J7-1 GND J7-2 FAN TACHO J7-3 FAN PWM J7-4 12V DESCRIPTION Power ground (return) Tacho from external fan PWM for from external fan +12 VDC NUCLEAR AND MEDICAL APPLICATIONS - 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