®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 1 of 21 www.power-one.com
• 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 with single stage conversion AC to
DC or DC input of 90 to 350 V
• Power factor correction, harmonics IEC/EN 61000-3-2
• Virtually no inrush current
• Immunity to IEC/EN 61000-4-2, -3, -4, -5, -6, -11
• Emissions according to EN 55011/022
• Very high efficiency; up to 89%
• Short-term output peak power capability, rectangular
current limiting characteristic
• Single or two independently regulated outputs with 24,
36, or 48 V
• Outputs no-load, overload, and short-circuit proof
• PCBs protected by lacquer
• Very high reliability
Description
The Convert Select front end series represents a family of
DIN-rail mountable AC-DC and DC-DC converters with power
factor correction. The converters have been designed
according to the latest industry requirements and standards.
They are ideal for use in outdoor and other demanding
applications to power building control systems, factory
automation, industrial controls, instrumentation, electro-
magnetic drives, fans, and other DC loads. Different models
are available with a single output or two independently
regulated, electrically isolated outputs with 24, 36, or 48 V.
Special models for battery charging are available.
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.
Safety according to IEC/EN 50178, IEC 61010-1, IEC
60950-1, UL/CSA 60950-1 2nd Ed.
The outputs deliver an electrically-isolated Safety Extra Low
Voltage, SELV, (except models LXR/LXN1740) and low output
noise. They are no-load, overload, and short-circuit 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 TÜV and UL, 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.
Features
114
4.49"
194
7.64"
138
5.43"
Table of Contents Page Page
Description ......................................................................... 1
Model Selection .................................................................. 2
Functional Description ....................................................... 4
Electrical Input Data ........................................................... 5
Electrical Output Data ......................................................... 7
Electromagnetic Compatibility (EMC) .............................. 12
Immunity to Environmental Conditions ............................ 13
Mechanical Data ............................................................... 14
Safety and Installation Instructions .................................. 15
Description of Options ..................................................... 17
Accessories...................................................................... 20
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 2 of 21 www.power-one.com
The thermal concept allows operation at full load up to an
ambient temperature of 60 °C 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 easily accessible from the
Model Selection
Table 1: Standard models
Output 1 Output 2 Output Power Operating Input Type Effic. Options 3, 5
Vo1 nom1Io1 nom Vo2 nom1Io2 nom Po nom Voltage Designation ηη
ηη
ηmin
7
[VDC] [A] [VDC] [A] [W] Vi min - Vi max [%]
24.7 15 - - 371 85 2 – 264 VAC, LXR1601-6 87 R
24.7 20 - - 494 47 – 63 Hz 4,LXN1601-6 87 D1, D2, D5
37 10 - - 370 902 – 350 VDC 6
LXR1701-6 388 M1, M2
37 13.4 - - 496 LXN1701-6 388
F, K2
49.4 7.5 - - 371 LXR1801-6 88
G
49.4 10 - - 494 LXN1801-6 88
24.7 10 24.7 10 494 LXN2660-6 87
37 6.7 37 6.7 496 LXN2770-6 388
49.4 5 49.4 5 494 LXN2880-6 88
1R-input not connected.
2For derating at low input voltage see section Output Power Derating.
3For minimum quantity and lead times contact Power-One.
4The converters have been tested up to 440 Hz; for operating frequencies <47 Hz or >63 Hz contact Power-One.
5On double-output models the options R, M2, D1, D2, D5 are related to the 2nd output only.
6Vi ≤ 250 VDC for models with option F
7Min. efficiency at Vi nom, Io nom, and TA = 25 °C. Typical values are approx. 2% better.
front. System connectors with screw terminals for use with
pre-assembled harnesses, external adjustment of the output
voltage, as well as various auxiliary functions are available as
options.
Table 2: Battery charger models (M1 included)
Output Voltage Nominal Output Values Operating Input Type Designation Effic. Options 3
VBat Vo safe1Vo max Vo nom 5Io nom 5Po nom 5Voltage ηη
ηη
ηmin
7
[VDC] [VDC] [VDC] [VDC] [A] [W] Vi min - Vi max [%]
24 25.681 29.3 27.3 12.6 344 85
2 – 264 VAC, LXR1240-6M1 87 F, K2,
16.8 458 47 – 63 Hz 4,LXN1240-6M1 87 G
36 38.52143.95 40.88 8.4 343 90 2 – 350 VDC 6
LXR1840-6M1
387
11.2 458 LXN1840-6M1
387
48 51.36158.6 54.5 6.3 343 LXR1740-6M1 87
8.4 458 LXN1740-6M1 87
1Setting voltage (typ.) with open R-input
2For derating at low input voltage see section Output Power Derating.
3For minimum quantity and lead times consult Power-One.
4The converters have been tested up to 440 Hz; for operating frequency <47 Hz or >63 Hz contact Power-One.
5Nominal output figures, calculated with a cell voltage of 2.27 V at 20 °C.
6Vi ≤ 250 VDC for models with option F.
7Min. efficiency at Vi nom, Vo nom, Io nom, and TA = 25 °C. Typical values are approx. 2% better.
NFND: Not for new designs. Preferred for new designs
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 3 of 21 www.power-one.com
Part Number Description
L X N 2 660 -6 D2 F K2 G
Input voltage range ............................................................... L
Series ...................................................................................X
Nominal output power
375W ............................................................... R
500 W .............................................................. N
Number of outputs ...........................................................1, 2
Type specification .................................................. 000 – 999
Operational ambient temperature range TA
–40 to 60 °C ................................................... -6
Customer-specific .................................... -0, -5
Options Output voltage control input
2...................................... R
Save data signal
2......................................... D1, D2, D5
Multiple functions via
D-SUB
connector 2..... M1, M2
Built-in second fuse, input diode .....................F
System connector ......................................... K2
RoHS compliant for all six substances ......... G1
1G is always placed at the end of the part number. Consult Power-One for availability!
2Only one of these options is possible.
Note: The sequence of options must follow the order above.
Example: LXN2660-6D2FK2G: 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, 10 A, options D2, F, K2, and RoHS-
compatible for all 6 substances.
Product Marking
Basic type designation, applicable safety approval and
recognition marks, CE mark, warnings, pin designation,
Power-One company logo.
Specific type designation, input voltage range, nominal output
voltages and currents, degree of protection, batch and serial
number, data code including production site, version, date of
production.
NFND: Not for new designs. Preferred for new designs
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 4 of 21 www.power-one.com
Input filter
Input filter
V
o
/I
o
control
Output filter
2
nd
control loop (SELV)
Control circuit
including
PFC and
input OVP/UVP
L
N
Vo+
Vo–
C
y
C
y
C
y
C
Y
C
Y
Aux1
Fuse
2
1
03105
Shunt Shunt
3
4
5
8
9
2
3
6
7
1
12
10
Aux2
11
2
nd
fuse
(option F)
Rectifier
Input filter
C
y
C
y
Fuse
2
1
03106
3
Input filter
V
o
/I
o
control
Output filter
2nd control loop (SELV)
Control circuit
including
PFC and
input OVP/UVP
Vo+
Vo–
C
y
C
y
C
y
Shunt Shunt
4
5
2
3
Input filter
V
o
/I
o
control
Output filter
2nd control loop (SELV)
Control circuit
including
PFC and
input OVP/UVP
Vo+
Vo–
C
y
C
y
C
y
Aux1
Shunt Shunt
8
9
6
7
12
10
Aux2
11
1
L
N
2nd fuse
(option F)
Rectifier
+
+
Functional Description
The X Series converters are primary controlled AC-DC or DC-
DC flyback converters with a constant switching frequency of
130 kHz. The power-factor-corrected single-step conversion
of the input voltage to a low output voltage results in extremely
high efficiency. Depending on the output power, the converters
are fitted with three (375 W) or four (500 W) powertrains.
Fig. 1
LXR 375 W single-output converter.
Fig. 2
LXN 500 W double-output converter
For the pinout of 500 W single-output models see fig. 1.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 5 of 21 www.power-one.com
Models with four powertrains have one or two outputs.
Double-output models exhibit individual control of each
output.
The input voltage is fed via fuse, filter, and rectifier to the
powertrains with main transformers 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 each 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 for each output. 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.
Electrical Input Data
General conditions:
TA = 25 °C, unless TC is specified.
Table 3: Input data LW models
Input LXR LXN Unit
AC-Input DC-Input AC-Input DC-Input
Characteristic Conditions min typ max min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom 85 2264 90 2350 3 852264 902350 3 V
range Tc – Tc max
Vi nom Rated input volt. range 100 (230) 240 220 100 (230) 240 220
fiRated input frequency150 – 60 -- 50 – 60 -- Hz
IiInput current Io nom, Vi = Vi nom 1.9 1.95 2.6 2.6 A
Io nom, Vi = Vi min 5.2 5.0 7.0 6.6
Pi0 No-load input power Vi min – Vi max 3333W
Iinrush Inrush current Vi max , t > 0.1 ms 5 5 5 5 A
CiInput capacitance 5 5 6 6 µF
PF Power factor Vi nom = 230 V, Io nom 0.90 -- 0.90 --
Vi RFI Conducted input RFI EN 55011/55022 A A A A
Radiated input RFI Vi nom, Io nom
fswitch Switching frequency 130 130 130 130 kHz
1For operating frequencies <47 Hz and >63 Hz contact Power-One. The converters have been tested up to 440 Hz.
2Output power derating at low input voltage and/or high case temperature TC; see Output Power Derating.
3Vi ≤ 250 VDC for models with option F.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 6 of 21 www.power-one.com
0 0.2 0.4 0.6 0.8 1
50
70
60
80
90
η [%]
I
o
I
o nom
V
i
= 125 V
rms
V
i
= 230 V
rms
04068a
Output Power Derating
The output power of LX models must be decreased at low
input voltage and/or powertrain temperature above 125 °C.
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. As a result, the output power has to be reduced
according to the tables 4 and 5.
Note: The measurements have been made at the approval tests
with free air convection cooling according to UL 60950, 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
Power-One.
Input Fuse and Protection
A slow blow fuse (Schurter T10A, 5 × 20 mm), protected by a
sleeve, is connected in the line input. For DC input voltages
above 250 V an external DC fuse or a circuit breaker must be
installed; observe the Installation Instructions.
Converters with option F have 2 fuses, one in each input line.
The D C input voltage for all converters with option F is limited
to 250 V.
A VDR and a symmetrical input filter form an effective
protection against input transients.
Fig. 3
Efficiency versus load
Table 4: Po derating according to UL 60950 at TA = 60 °C, or according to UL 508 at Tout = 50 °C
Model Po nom TC max Derate below derate by
[W] [°C] Vi [VAC] Vi [VDC] [W/ V]
LXR1601-6 371 84 125 115 – 1.8
LXR1701-6 370 84 125 115 – 1.8
LXR1801-6 371 84 125 115 – 1.8
LXN1601/2660-6 494 84 125 115 –2.5
LXN1701-6 496 84 125 115 –2.5
LXN1801/2880-6 494 84 125 115 –2.5
Table 5: Po derating according to UL 60950 at TA = 50 °C, or according to UL 508 at Tout = 40 °C
Model Po nom TC max Derate below derate by
[W] [°C] Vi [VAC] Vi [VDC] [W/ V]
LXR1601-6 371 78 100 no derating – 1.5
LXR1701-6 370 78 100 no derating – 1.5
LXR1801-6 371 78 100 no derating – 1.5
LXN1601/2660-6 494 78 100 no derating – 2
LXN1701-6 496 78 100 no derating – 2
LXN1801/2880-6 494 78 100 no derating – 2
An under- and overvoltage lockout protects the converter by
disabling it below Vi min and above Vi max.
The built-in bridge rectifier provides reverse polarity protection
at the input if operated from DC.
Efficiency
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 7 of 21 www.power-one.com
0 0.2 0.4 0.6 0.8 1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
PF
04066a
I
o
I
o nom
V
i
= 125 VAC
V
i
= 230 VAC
0
1
2
3
4
35791113
mA/W
04067a
Limit class D according
to IEC/EN 61000-3-2
Harm.
LXN1601-6
Fig. 5
Power factor versus load
Fig. 4
Harmonic currents at input current, measured at Vi = 230
VAC, Io = Io nom (LXN1601-6)
Power Factor, Harmonics
All converters feature active power factor correction.
Electrical Output Data
Table 6a: Output data of 375 Watt standard models. General conditions: TA = 25 °C, unless TA is specified; R input open-circuit
Model LXR1601 LXR1701 LXR1801 Unit
Characteristic Conditions min typ max min typ max min typ max
Vo nom Output voltage nominal 1Vi nom, Io nom 24.25 24.7 25.2 36.4 37 37.8 48.5 49.36 50.4 V
* 24.55 24.7 24.85 36.6 37 37.5 48.8 49.36 50.0
Vo worst Output voltage range Vi min – Vi max, 24.0 25.8 36.0 38.7 48.0 51.6
of tolerance Io = (0.1 – 1) Io nom
Vo L Overvoltage protection 28.5 30 42.7 45 57 60
Po nom Output power nominal Vi = 100 VAC – V i max 371 370 371 W
Io nom Output current nominal Vi = 100 VAC – V i max 15 10 7.5 A
Io L Output current limit 3Vi = 100 VAC – V i max 15.1 17.2 10.2 11.4 7.65 8.7
Iop Output current boost
4typ. 1 s 22.5 15 11.3
voRipple and noise Vi = 230 VAC, 100 100 100 mVpp
fi = 50 Hz, Io nom 1100
21200
21200
2
∆Vo u Static line regulation
100 VAC
– V
i max,
I
o nom
±0.1 ±0.15 ±0.15 V
∆Vo l Static load regulation Vi nom, – 0.4 – 0.6 – 0.8
(droop) Io = (0.1 – 1) Io nom
vod Dynamic load regulation Vi nom, ±1.2 ±1.5 ±1.8
Voltage deviation and Io = (0.5 ↔ 1) Io nom
recovery time 40 80 80 ms
αvoTemperature coefficient TC min – TC max ±0.02 ±0.02 ±0.02 %/K
tor Start-up time Vi = 0 → Vi nom,
Io nom 700 700 700 ms
toh min Hold-up time Io nom,152025
Vo nom → 0.8 Vo nom
* Converters with version V105 or higher
1Setting voltage with open R-input
2Superimposed low frequency ripple at 2 • fi
3Rectangular current limit characteristic (continuous operation)
4Short-term peak power capability 150% of Po nom for approx. 1 s
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 8 of 21 www.power-one.com
Table 6c: Output data of 500 Watt double-output models. General conditions as per table 6a.
Model LXN2660 LXN2770 LXN2880 Unit
Characteristic Conditions min typ max min typ max min typ max
Vo nom Output voltage nominal1Vi nom, Io nom 24.25 24.7 25.2 36.4 37 37.8 48.5 49.36 50.4 V
* 24.55 24.7 24.85 36.8 37 37.2 49.06 49.36 49.66
Vo worst Output voltage range Vi min – Vi max, 24.0 25.8 36.0 38.7 48.0 51.6
of tolerance Io = (0.1 – 1) Io nom
Vo L Overvoltage protection 28.5 30 42.7 45 57 60
Po nom Output power nominal Vi = 100 VAC – V i max 494 496 494 W
Io nom Output current nominal Vi = 100 VAC – V i max 2 × 10 2 × 6.7 2 × 5A
Io L Output current limit 3Vi = 100 VAC – V i max 10.2 11.4 6.8 7.7 5.05 5.7
Iop Output current boost
4typ. 1 s 2 × 15 2 × 10 2 × 7.5
voRipple and noise Vi = 230 VAC, 100 100 100 mVpp
fi = 50 Hz, Io nom 2 1100
21200
21200
2
∆Vo u Static line regulation 100 VAC – Vi max, Io nom ±0.1 ±0.15 ±0.15 V
∆Vo l Static load regul. (droop) Vi nom, Io = (0.1 – 1) Io nom – 0.4 – 0.6 – 0.8
vod Dynamic load regulation Vi nom, ±1.2 ±1.5 ±1.8
Voltage deviation and Io = (0.5 ↔ 1) Io nom
recovery time 40 80 80 ms
αvoTemperature coefficient TC min – TC max ±0.02 ±0.02 ±0.02 %/K
tor Start-up time Vi = 0 → Vi nom, Io nom 700 700 700 ms
toh min Hold-up time Io nom, Vo nom → 0.8 Vo nom 15 20 25
* Converters with version V105 or higher
1Setting voltage with open R-input
2Superimposed low frequency ripple at 2 • fi
3Rectangular current limit characteristic (continuous operation)
4Short-term peak power capability 150% of Po nom for approx. 1 s
Table 6b: Output data of 500 Watt single-output standard models. General conditions as per table 6a.
Model LXN1601 LXN1701 LXN1801 Unit
Characteristic Conditions min typ max min typ max min typ max
Vo nom Output voltage nominal1Vi nom, Io nom 24.25 24.7 25.2 36.4 37 37.8 48.5 49.36 50.4 V
* 24.55 24.7 24.85 36.8 37 37.2 49.06 49.36 49.66
Vo worst Output voltage range Vi min – Vi max, 24.0 25.8 36.0 38.7 48.0 51.6
of tolerance Io = (0.1 – 1) Io nom
Vo L Overvoltage protection 28.5 30 42.7 45 57 60
Po nom Output power nominal Vi = 100 VAC – V i max 494 496 494 W
Io nom Output current nominal Vi = 100 VAC – V i max 20 13.4 10 A
Io L Output current limit 3Vi = 100 VAC – V i max 20.2 22.8 13.5 15.2 10.1 11.4
Iop Output current boost
4typ. 1 s 30 20 15
voRipple and noise Vi = 230 VAC, 100 100 100 mVpp
fi = 50 Hz, Io nom 2 1100
21200
21200
2
∆Vo u Static line regulation 100 VAC – Vi max, Io nom ±0.1 ±0.15 ±0.15 V
∆Vo l Static load regul. (droop) Vi nom, Io = (0.1 – 1) Io nom – 0.4 – 0.6 – 0.8
vod Dynamic load regulation Vi nom, ±1.2 ±1.5 ±1.8
Voltage deviation and Io = (0.5 ↔ 1) Io nom
recovery time 40 80 80 ms
αvoTemperature coefficient TC min – TC max ±0.02 ±0.02 ±0.02 %/K
tor Start-up time Vi = 0 → Vi nom,
Io nom 700 700 700 ms
toh min Hold-up time Io nom, Vo nom → 0.8 Vo nom 15 20 25
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 9 of 21 www.power-one.com
Table 7a: Output data of 350 Watt battery charger models. General conditions: TA = 25 °C, unless TA is specified; R input left
open-circuit, unless otherwise specified
Model LXR1240-6M1 LXR1840-6M1 LXR1740-6M1 Unit
Characteristic Conditions min typ max min typ max min typ max
Vo safe Output setting voltage 1Vi nom, Io nom 24.5 25.68 26.3 36.75 38.52 39.5 49 51.36 52.6 V
VBat Output voltage (max.) Vi min – Vi max, 29.3 43.95 58.6
controlled by R input Io = (0.1 – 1) Io nom
Vo L Overvoltage protection 30.9 32.5 46 48.8 61.8 65
Po nom Output power nominal Vi = 100 VAC – Vi max 344 343 343 W
Io nom Output current nominal Vi = 100 VAC – Vi max 12.6 8.4 6.3 A
Io L Output current limit Vi = 100 VAC – Vi max 12.7 15.0 8.5 11.3 6.36 7.5
Iop Output current boost
3typ. 1 s 18.9 12.6 9.5
voRipple and noise Vi = 230 VAC, 100 100 100 mVpp
fi = 50 Hz, Io nom
2 1100
2 120021200 2
∆Vo u Static line regulation
100 VAC
– V
i max,
I
o nom
±0.1 ±0.15 ±0.15 V
∆Vo l Static load regulation Vi nom, – 0.4 – 0.6 – 0.8
(droop) Io = (0.1 – 1) Io nom
vod Dynamic load regulation Vi nom, ±1.2 ±1.6 ±1.9
Voltage deviation and Io = (0.5 ↔ 1) Io nom
recovery time 40 80 80 ms
αvoTemperature coefficient TC min – TC max ±0.02 ±0.02 ±0.02 %/K
tor Start-up time Vi = 0 → Vi nom, Io nom 700 700 700 ms
Table 7b: Output data of 500 Watt battery charger models. General conditions as per table 7a
Model LXN1240-6M1 LXN1840-6M1 LXN1740-6M1 Unit
Characteristic Conditions min typ max min typ max min typ max
Vo safe Output setting voltage 1Vi nom, Io nom 24.5 25.68 26.3 36.75 38.52 39.5 49 51.36 52.6 V
VBat Output voltage (max.) Vi min – Vi max, 29.3 43.95 58.6
controlled by R input Io = (0.1 – 1) Io nom
Vo L Overvoltage protection 30.9 32.5 46 48.8 61.8 65
Po nom Vi = 100 VAC – Vi max 458 458 458 W
Io nom Output current nominal Vi = 100 VAC – V i max 16.8 11.2 8.4 A
Io L Output current limit Vi = 100 VAC – V i max 16.9 20 11.3 15 8.5 10
Iop Output current boost
3typ. 1 s 25.2 16.8 12.6
voRipple and noise Vi = 230 VAC, 100 100 100 mVpp
fi = 50 H z, Io nom
2 1100
2 120021200 2
∆Vo u Static line regulation
100 VAC
– V
i max,
I
o nom
±0.1 ±0.15 ±0.15 V
∆Vo l Static load regulation Vi nom, – 0.4 – 0.6 – 0.8
(droop) Io = (0.1 – 1) Io nom
vod Dynamic load regulation Vi nom, ±1.2 ±1.6 ±1.9
Voltage deviation and Io = (0.5 ↔ 1) Io nom
recovery time 40 80 80 ms
αvoTemperature coefficient TC min – TC max ±0.02 ±0.02 ±0.02 %/K
tor Start-up time Vi = 0 → Vi nom, Io nom 700 700 700 ms
1Setting voltage with open R-input = Vo safe
2Superimposed low frequency ripple at 2 • fi
3Rectangular current limit characteristic (continuous operation)
4Short-term peak power capability 150% of Po nom for approx. 1 s
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 10 of 21 www.power-one.com
Vo+ 2
Vo+ 3
Vo- 4
Vo- 5
Vo- 8
Vo- 9
Vo+ 6
Vo+ 7
AUX1 10
Vo+ 2
Vo+ 3
Vo- 4
Vo- 5
Vo- 8
Vo- 9
Vo+ 6
Vo+ 7
AUX1 10
Vo+ 2
Vo+ 3
Vo- 4
Vo- 5
Vo- 8
Vo- 9
Vo+ 6
Vo+ 7
AUX1 10
V
i
V
i
V
i
Load
11053a
Additional wiring for output currents I
o
≥ 10 A
Additional wiring, if using the R-input
V
R
+
_
Parallel Operation
Double-output models exhibit an independent
control logic each. Both outputs can be connected
in parallel, provided that the options S (included in
M1) and R are not used, since they influence only
the 2nd output. The two pairs of powertrains 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
mm2. The best results for parallel operation can be
achieved with the wiring shown in fig. 6.
Parallel operation of single-output models using
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.
Fig. 7
Vo versus Io (single-output model, typical values).
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.
0.8
1.0
0.6
0.4
0.2
0
00.2 0.4 0.6 0.8 1.0 1.2
Io /Io nom
Vo /Vo nom
05181a
Note: Parallel operation is not possible, if a
temperature sensor is connected, as the sensor
eliminates the output voltage droop.
Series Connection
Series connection of several outputs up to 150 V is
possible. The output is not SELV, when the max.
output voltage exceeds 60 V.
Output Characteristic and Protection
The output characteristic, individual for each group
of powertrains, 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 Vo L, the
respective output is disabled.
Overtemperature Protection
Each powertrain is independently protected against over-
temperature by a built-in temperature sensor. When a certain
temperature is reached, the concerned powertrain reduces
its output power continuously.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 11 of 21 www.power-one.com
Fig. 9
Trickle charge voltage versus temperature for different
temperature coefficients (Vo safe with disconnected sensor)
Fig. 10
Schematic circuit diagram of a system with battery backup
and temperature-controlled charging.
Fig. 8
Short term peak power characteristic: overcurrent versus
time (typical values).
1.4
1.6
1.2
1.0
0.8
0.6
-- 0.5 0.5 1.5 2.5 s
I
o
/ I
o nom
05194b
012
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
Cell voltage [V]
–20 –10 0 10 20 30 40 50 °C
06139b
V
C
= 2.27 V, –3 mV/K V
C
= 2.27 V, –3.5 mV/K
V
C
= 2.23 V, –3 mV/K V
C
= 2.23 V, –3.5 mV/K
V
o safe
Thermal Considerations
The thermal conditions are influenced by input voltage, output
current, airflow, and temperature of surrounding components.
TA max is therefore, contrary to TC max, an indicative value only.
Caution: The installer must ensure that under all operating
conditions TC remains within the limits stated in the table
Temperature specifications.
Note: Sufficient forced cooling allows TA to be higher than TA max
provided that TC max 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 @ Io nom for 24 V outputs (1.2 V @ Io nom for 48 V
outputs), but this creates considerable power losses.
Power
supply
Load
–
+
Input Vo–
R
Temperature sensor
ϑ
03099d
Battery
Vo+
+
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 12 of 21 www.power-one.com
Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
The X Series has been successfully tested to the following specifications:
Table 8: Electromagnetic immunity (type tests)
Phenomenon Standard Level Coupling Value Waveform Source Test In Perf.
mode 1 applied imped. procedure oper. crit.2
Electrostatic IEC/EN 4 3 contact discharge 8000 Vp1/50 ns 330 Ω10 positive and yes A
discharge 61000-4-2 air discharge 15000 Vp10 negative
(to case) discharges
Electromagnetic IEC/EN 3 antenna 10 V/m AM 80% n.a. 80 – 1000 MHz yes A
field RF 61000-4-3 1 kHz
ENV 50204 3 antenna 10 V/m 50% duty cycle, n.a. 900 ±5 MHz yes A
200 Hz repetition
frequency
Electrical fast IEC/EN 3 capacitive, o/c ±2000 Vpbursts of 5/50 ns 50 Ω60 s positive yes A
transients/burst 61000-4-4 4 4 ±i/c, +i/– i ±4000 Vp2.5/5 kHz over 60 s negative
direct 15 ms; burst transients per
period: 300 ms coupling mode
Surges IEC/EN 35±i/c ±2000 Vp1.2/50 µs 12 Ω5 pos. and 5 neg. yes B
61000-4-5 2
5+i/–i ±1000 Vp1.2/50 µs 2 Ωsurges per
coupling mode
Conducted IEC/EN 36i, o, signal wires 10 VAC AM 80% 150 Ω0.15 – 80 MHz yes A
disturbances 61000-4-6 (140 dBµV) pulses
Power frequency IEC/EN -- -- 100 A/m 50 and 60 Hz -- x, y, and z axis yes A
magnetic field 61000-4-8
1i = input, o = output, c = case.
2A = Normal operation, no deviation from specifications, B = Normal operation, temporary loss of function or deviation from specs.
possible
3Exceeds EN 50121-3-2:2006 table 9.3 and EN 50121-4:2006 table 1.4.
4Corresponds to EN 50121-3-2:2006 table 7.2 and EN 50121-4:2006 table 2.2.
5Complies with EN 50121-3-2:2006 table 7.3 and EN 50121-4:2006 table 2.3.
6Corresponds to EN 50121-3-2:2006 table 8.1 and EN 50121-4:2006 table 3.1 (radio frequency common mode).
80
60
40
20
0
dBpW
50 100 150 200 250 300 MHz
07119a
Emissions
Fig. 12
Radiated emissions for LX models:
Typical electromagnetic field strength (quasi-peak) according
to EN 55014, measured at Vi nom and Io nom.
Fig. 11
Conducted emissions for LXR1740:
Typical disturbances, peak and quasipeak (x) at input L
according to EN 55022, measured at Vi nom and Io nom.
Limit: 61204bqp Detector: Peak, conducted Vi+, TÜV-Divina, 2009-01-15
LXR1740-6M1, Ui=230 VAC, Uo=51.7 V, Io= 6.3 A
0 0.2 0.5 1 2 5 10 20 MHz
20
40
60
80
d
BµV
EN 55022 B
EN 55022 A
JM0013
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 13 of 21 www.power-one.com
Immunity to Environmental Conditions
Table 10: Mechanical stress and climatic
Test method Standard Test conditions Status
Cab Damp heat IEC/EN 60068-2-78 Temperature: 40 ±2 °C Converter
steady state MIL-STD-810D sect. 507.2 Relative humidity: 93 +2/-3 % not
Duration: 56 days operating
Kb Salt mist, cyclic IEC/EN 60068-2-52 Concentration: 5% (30 °C) Converter
(sodium chloride Duration: 2 h per cycle not
NaCl solution) Conditions: 40 °C, 93% rel. humidity operating
Storage duration: 3 cycles of 22 h
Eb Bump IEC/EN 60068-2-29 Acceleration amplitude: 25 gn = 245 m/s2Converter
(half-sinusoidal) MIL-STD-810D sect. 516.3 Bump duration: 11 ms not operating,
6000 bumps: 1000 in each direction wall-mounted1
Acceleration amplitude: 10 gn = 98.1 m/s2Converter
Bump duration: 11 ms not operating,
6000 bumps: 1000 in each direction on DIN-rail 2
Fc Vibration IEC/EN 60068-2-6 Acceleration amplitude and 0.35 mm (10 – 60 Hz) Converter
(sinusoidal) MIL-STD-810D sect. 514.3 frequency (1 Octave/min): 5 gn = 49 m/s2 (60 – 2000 Hz) operating,
Test duration: 7.5 h (2.5 h each axis) wall-mounted1
Acceleration amplitude and 0.25 mm (10 – 60 Hz) Converter
frequency (1 Octave/min): 2 gn = 19 m/s2 (60 – 2000 Hz) operating,
Test duration: 7.5 h (2.5 h each axis) on DIN-rail 2
Ea Shock IEC/EN 60068-2-27 Acceleration amplitude: 50 gn = 490 m/s2Converter
(half-sinusoidal) MIL-STD-810D sect. 516.3 Bump duration: 11 ms not operating,
Number of bumps: 18 (3 in each direction) wall-mounted1
Fh Random vibration IEC/EN 60068-2-64 Acceleration spectral density: 0.05 gn2/Hz Converter
broad band Frequency band: 20 – 500 Hz operating,
digital control and Acceleration magnitude: 4.9 gn rms wall-mounted1
guidance Test duration: 3 h (1 h each axis)
Fda Random vibration IEC/EN 60068-2-35 Acceleration spectral density: 0.01 gn2/Hz Converter
wide band Frequency band: 20 – 500 Hz operating,
reproducibility Acceleration magnitude: 2.2 gn rms mounted on a
high Test duration: 1.5 h (0.5 h each axis) DIN-rail 2
1Wall-mounted with brackets UMB-W [HZZ00618]; see Accessories
2Fastened on a DIN-rail with 2 additional DIN-rail fixing brackets DMB-EWG; see Accessories. This also covers wall-mounting with
brackets, because wall mounting performs better in vibration test.
Temperatures
Table 9: Harmonics and flicker
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
Table 11: Temperature specifications, valid for an air pressure of 800 - 1200 hPa (800 - 1200 mbar)
Model Standard models -6 Unit
Characteristics Conditions min max
TAAmbient temperature Converter –40 60 °C
TCCase temperature operating1–40 902
TSStorage temperature Not operating –40 100
1See Thermal Considerations
2See table 4 and 5 Po derating
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 14 of 21 www.power-one.com
138 (5.43")
106.6 (4.2")
113.6 (4.47")
15 (0.59")
213.8 (8.42")
194 (7.64")
33 (1.3")
49 (1.93")
S09127d
199 (7.83")
Wall mounting
brackets
(accessories)
Measuring point for
case temperature T
C
T
A
T
A
TC
~ 40 (1.6")
13 (0.51")
29.4 (1.16")
43 (1.69")
31 (1.22") LED
x axis
z axis
(vertical)
European
Projection
Option M
Option M
(female
connector)
D-SUB
(male con-
nector)
Option M
(female connector)
Mechanical Data
Dimensions in mm.
Table 12: MTBF
Values at specified Model Ground benign Ground fixed Ground mobile Unit
case temperature 40 °C 40 °C 70 °C 50 °C
MTBF 1 LXN1801-6 400 000 110 000 50 000 40 000 h
1Calculated according to MIL-HDBK-217E, notice 2.
Failure Rates
Fig. 13
Case X01
LXR: weight approx. 2600 g
LXN: weight approx. 2800 g
Case designed by ATP, Munich.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 15 of 21 www.power-one.com
13
2
10066
13579
10086
246810 12
11
Safety and Installation Instructions
Terminal Allocation
The terminal allocation tables define the electrical
potential of the converters.
Fig. 14b
View of the output terminals (cage clamp style)
Fig. 14a
View of the input terminals (cage clamp style)
Installation Instructions
The X Series converters are components, intended exclusively
for inclusion within other equipment by professional installers.
The 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 IEC 721-3-2, class 2.1 (vertical), 2
additional fixing brackets DMB-EWG [formerly HZZ00624] (see
Accessories) must be fitted on the bottom side of the DIN-rail.
For heavy duty applications, we recommend installing of all 4
fixing brackets DMB-EWG.
Wall mounting is possible with the wall-mounting brackets
UMB-W [HZZ00618] (see Accessories). This complies with
IEC 721-3-2, 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 X Series are class I equipment. Input
terminal 1 (
) and the output terminals 1 and 12 ( )
are reliably connected to the case. For safety reasons it is
Fig. 15b
Dismounting from DIN-rail. Use proper tool (min. 3 mm
screwdriver) and adequate force.
Fig. 15a
Snap-fit mounting to DIN-rail.
10073
10072
Table 13a: Input terminals of LX models
Pin no. Pin designation Electrical determination
1 Protective earth PE
2NInput neutral, DC negative
3LInput phase, DC positive
essential to connect the input terminal 1 ( ) to the protective
earth of the supply system. Output terminals 1 and 12 can be
used to connect the output voltage(s) or the load to functional
earth.
Table 13b: Terminal allocation output side
Pin Pin des. Single output Double output
1
Funct. earth to load Funct. 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
9 – Output negative Output 2 negative
10 AUX1 Options 1 Options 1
11 AUX2 Options 2 Options 2
12 Funct. earth to load Funct. earth to load
Note: If no options are fitted, terminals 11 and 12 are not
connected.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 16 of 21 www.power-one.com
1
2
3
1007
4
Fig. 16
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) is internally fused; see Input Fuse and
Protection. 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 converter operates at source voltages above 250 VDC,
an external DC fuse or a circuit breaker at system level should
be installed in the phase input line L .
Caution:
• Installation must strictly follow the national safety regulations.
• Do not open this apparatus!
Protection Degree and Cleaning Agents
The protection degree of the converters is IP 20. Protective
covers over input and output terminals are available on
request; see Accessories.
Any penetration of liquid or foreign solid objects has to be
prevented, since the converters are not hermetically sealed.
Standards and Approvals
The X Series converters were approved according to IEC/
EN 50178, IEC 61010-1, IEC 60950-1, UL/CSA 60950-1 2nd Ed.
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).
CB Scheme is available (SE-34628).
The converters are subject to manufacturing surveillance in
accordance with the above mentioned UL standards and with
ISO9001:2000.
See also the Declaration of Conformity (last page).
Railway Applications
All X Series converters have been designed by observing the
railway standards EN 50155 and EN 50121. All boards are
coated with a protective lacquer.
Isolation
The electric strength test is performed in the factory as routine
test in accordance with EN 50116 and IEC/EN 60950, and
should not be repeated in the field. Power-One will not honor
any warranty claims resulting from electric strength field tests.
Table 14: Isolation
Characteristic Input to case Output(s) to Output 1 to Unit
and output(s) case output 2 and AUX
Electric Factory test ³1 s 2.8 1 1.4 0.5 kVDC
strength AC test voltage equivalent 2.0 1.0 0.35 kVAC
test to factory test
Insulation resistance >300 2 >300 2 >100 M W
1In accordance with EN 50116 and IEC/EN 60950-1, subassemblies are pretested with 4.2 kVDC.
2Tested at 500 VDC.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 17 of 21 www.power-one.com
Leakage Currents
Leakage currents flow due to internal leakage capacitance
(mainly the Y-capacitors). The current values are proportional
to the voltage Vi and the frequency fi of the supply (mains). The
leakage currents are specified at maximum operating input
voltage, provided that phase, neutral, and protective earth are
correctly connected as required for class I equipment.
Caution: Leakage current may exceed 3.5 mA, if fi > 63 Hz.
Safety of Operator-Accessible Output Circuits
If the output circuit of a converter is operator-accessible, it shall
be a SELV circuit according to the safety standards IEC/EN
60950.
The converters have SELV 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.
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.
Description of Options
Single options D1, D2, D5, R are available on the AUX1
terminal (10), referenced to Vo– or Vo2–.
Option M1 and M2 designate a combination of several options
accessible via a D-SUB connector or in some cases on the
AUX1 and AUX2 terminals. Option M1 includes the function SD.
Note: In double-output models, the options D1, D5, R, and SD
concern only output 2 connected to terminals 6, 7, 8, and 9.
Single Options Using the AUX1 Pin
The connection is shown in the figure below. For the
description refer to Adjustment of Vo or Vo2 (next section).
AUX1
1
11
10
9
8
7
6
5
4
3
2
Adjustment with V
ext
AUX1
1
11
10
9
8
7
6
5
4
3
2
Adjustment with R
ext
Vo2+
or Vo+
Vo2–
or Vo–
R
ext1
R
ext2
V
ext
+
Vo2–
or Vo–
1212
06160a
AUX2AUX2
Fig. 17
Connection of adjust resistors or an external voltage source to
adjust the output voltage Vo or Vo2 (option M1 or M2 not fitted)
Table 15: Pin allocation of the 9 pin D-SUB connector
Pin Designation Description
1 GND11System ground / common signal return
2 R R input3
3 VCC2Positive supply voltage (≈ output 2)
4 D1 Output voltage monitor Vo low D1 3
5 D5 Output 2 voltage monitor Vo low D5 3
6 SD Shutdown3
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)
1Do not connect GND1 (pin 1) with the neg. output (–)
2Do not connect VCC (pin 3) with the positive output (+)
3In double-output models, R, D1, D2, and SD concern output 2 only.
Table 16: Option board M1
Function Description
R Output voltage adjust1
D1 Output voltage monitor Vo low D11
D2 Input voltage monitor Vi low
D5 Output 2 voltage monitor1
(battery deep discharged): Vo low D5
Sys-OK System okay
SD Shutdown1
D-adj Adjustment of trigger values D1 and D5
1In double-output models, only output 2 is concerned.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 18 of 21 www.power-one.com
Multiple Options M1 or M2
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.
In general, the multiple options M1 or M2 are connected to an
additional D-SUB connector. Some signals (but not option R)
can also be connected to AUX1 and AUX2, if the D-SUB
connector is not suitable to the customer.
D2: Input Voltage Monitor (Power Fail)
D2 monitors the input voltage Vi. When Vi drops below 65±3
VAC or 92 VDC, the D2 signal output is high impedance
(open-collector, max. 50 V).
When Vi is greater then said level, the signal output D2 is
conducting: VD2 < 1.5 V, ID2 max < 50 mA.
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 warning signal or
to switch off a part of the load. When the output voltage Vo (or
Vo2) is greater than Vo low D1 specified in table 17, the D1 signal
output is conducting: VD1 < 1.5 V, ID1 max < 50 mA.
Fig. 19
Wiring to adjust both threshold levels of option D1 or D5
1
2
3
4
5
6
7
8
9
D-SUB
06148a
Rx
Change threshold
Ry
VCC GND1
D-adj
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 Vo nom should be chosen (e.g., for a bus voltage
of 24.7 V: trigger level at 21 V).
D5: System Volt. Monitor (Battery Deep Discharge)
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 Vo low D5 specified in table 17, the D2 signal output is
conducting:
VD5 < 1.5 V, ID5 max < 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.
Adjustment of Threshold Levels (D1 or 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. 19.
Table 17: Option board M2
Function Description
R Output voltage adjust1
D2 Input voltage monitor Vi low
D5 Output voltage monitor1
(battery deep discharged): Vo low D5
D-adjust Adjustment of trigger values D1 and D5
1In double-output models, only output 2 is concerned.
1234
5
6
789
+
Power-Fail
D-SUB
06162a
1
11
10
9
8
7
6
5
4
3
2
D2
+
AUX1
1
11
10
9
8
7
6
5
4
3
2
Vo2+
or Vo+
Vo2+
or Vo+
AUX2
12
12
1234
5
6
789
+
Power-Fail D2
D-SUB
VCC
06140a
Fig. 18
Option D2: Examples of relay
control to monitor a power failure
Table 18: Options D1 and D5: Trigger and switch-on levels
Model Battery Vo low D1 Vo low D 5
VBat trigger switch on trigger switch on
[V] [V] [V] [V] [V]
LXR/LXN1140 12 11.5 12.1 10.5 12.1
LXR/LXN1240 24 23 24.2 21 24.2
LXR/LXN1840 36 34.4 36.3 31.5 36.3
LXR/LXN1740 48 46 48.4 42 48.4
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 19 of 21 www.power-one.com
SD: Shutdown
Reduces the output power to approx. 1 W, but the converter is
not fully disabled. In a no-load condition, Vo drops below
6.2 V; see fig. 23. In double-output models, only output 2 is
influenced.
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.
The open-collector output Sys-OK is protected by a Zener
diode and withstands up to 58.6 V. When the system status is
OK, the signal output is low: VSys-OK < 1.5 V, ISys-OK < 50 mA.
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 kΩ • –––––––––
Vo nom – Vo
Resistor Rext2, connected between R (pin 2) and VCC (pin 3)
of the D-SUB connector or according to fig. 17.
Vo – 2.5 V
Vo = 100 – 110% Vo nom. Rext2 ≈ 4 k Ω • ––––––––––––––––
2.5 V•(Vo/Vo nom –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.
VoVext
Vext ≈ 2.5 V • ––––– Vo ≈ Vo nom • ––––
Vo nom 2.5 V
Caution: To prevent damage, Vext should not exceed 3 V, 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 a 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
Vo nom stands for the voltage with open R input (= Vo safe).
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 120 /
208 V /60 Hz 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
Table 19: Shutdown Conditions
Voltage VSD on Result
shutdown pin
<0.7 V Converter disabled (Po approx. 1 W)
≥2.0 V or open Converter enabled
Fig. 23
Output voltage versus output current, while shut down (Vi =
Vi nom).
05175b
3
1
0 0.2 0.4 0.6 0.8 1.2
1A
5
Output current
V
Output voltage
Table 20: System OK (M1 with external battery sensor)
System Status Input Vcontrol VBat VBat Sys-OK
sensor signal theoretical measured output
System OK O.K. 2.7 V 27 V 27 V Low ohmic
Battery overchared / temp. sensor O.K. 2.7 V 27 V 28 V High ohmic
defect / control voltage to high
Overload, converter cannot follow the O.K. 2.7 V 27 V 24 V High ohmic
control signal
Output does not follow control signal, O.K. 3.0 V 30 V 27 V High ohmic
since battery would be overcharged
System OK O.K. 2.5 V 25 V 25V Low ohmic
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 20 of 21 www.power-one.com
Fig. 20
System connectors Option K2
the mains via German Schuko-plugs; see also Safety and
Installation Instructions.
Option F limits the DC input voltage to ≤ 250 V.
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.).
G: RoHS
RoHS-compliant for all six substances.
Accessories
UMB-W: Shock-Resistant Wall Mounting
Set of wall mounting brackets UMB-W [HZZ00618]
Content: 2 clamps, 4 countersunk screws M4, washers, and
spring washers.
49
33 ±0.5
4.2
8
18
3
12055
Fig. 21
Brackets UMB-W [HZZ00618]
Fig. 22
Wall mounting with mounting brackets UMB-W [HZZ00618].
10068
DMB-EWG: DIN-Rail Fixing Brackets
For DIN-Rail vibration-proof fastening, use a set of brackets
DMB-EWG (HZZ00624). For heavy-duty application 2 sets ( =
4 brackets) are preferable.
Fig. 23
One of 4 DIN-rail fixing brackets
Fig. 24
Protective covers COVER-W [HZZ 01219]
Protective Covers over Terminals
Set of plastic covers COVER-W [HZZ 01219]
Content: 2 covers to protect the input and output connector.
®
X Series Data Sheet
375, 500 Watt
AC-DC
and
DC-DC
DIN-Rail Converters
BCD20021-G Rev AC1, 13-May-2013 Page 21 of 21 www.power-one.com
Fig. 30
Connection of a temperature sensor
Fig. 29
Temperature sensor
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 www.power-
one.com).
For additional information go to www.power-one.com.
European
Projection
56 (2.2")L
L = 2 m (standard length)
other cable lengths on request
adhesive tape
26 (1.02")
9.8 (0.4")
09125a
+–
Battery
R
GND
Temperature
sensor
+–
05191a
green
brown
white
D-SUB
Fuse
Load
Vo+
Vo–
Converter
2
3
1
VCC
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical
components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written
consent of the respective divisional president of Power-One, Inc.
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.
Table 21: Sensors for converters with standard R input
Battery Sensor Cell Cell temp. Cable
voltage type voltage
coefficient
length
nom. [V] [V] [mV/K] [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
