EMERSON LPS121, LPS122, LPS123, LPS124, LPS125 Service Manual
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Rev. 03.24.08
LPS120 Series
1 of 3
Embedded Power for
Business-Critical Continuity
LPS120 Series
120 Watts
Special Features
• Active power factor correction
• 3" x 5" footprint
• Less than 1U high
• EN61000-3-2 compliant
•Remote sense
• Power fail and remote inhibit
• Single wire current sharing
• Adjustable main output
• Built-in Class B EMI filter
• Overvoltage protection
• Overload protection
• Thermal overload protection
• 5 V Standby output
and 12V Fan output
Total Power: 80 - 130 Watts
Input Voltage: 85 - 264 VAC
# of Outputs: Single
Electrical Specifications
Safety
Input
Input ra nge:
85 - 264 VAC ; 127 - 300VDC
Frequency:
47-440 Hz
Inrush current:
40A max., cold start @ 25°C
Efficiency:
80% typical at full load
EMI/RFI:
FCC Class B conducted; CISPR22 Class B conducted; EN55022
Class B conducted; VDE0878PT3 Class B conducted
Power factor:
0.99 typical
Safety ground
leakage current:
0.5mA @ 50/60 Hz, 264 VAC input
Output
Maximum power:
80W for convection ; 130W with 30CFM forced air
Adjustment range:
±5% minimum on the main outputs
Fan output:
12V @ 500mA - 5%, +7%
Standby outputs:
5V @ 500mA ±5%
Hold-up time:
20ms @ 125W load, 120VAC input
Overload protection:
Short circuit protection on all outputs. Case overload protected @ 120-135% above rating
Overvoltage protection:
20-35% above nominal output
Remote sense: Compensates for 0.5 V lead drop max. Will operate without
remote sense connected. Reverse connection protected.
Logical Control
Power failure: TTL logic signal goes high 100-500 msec after main output; it
goes low at least 4 msec before loss of regulation
Remote inhibit: Requires a contact closure to disable the outputs, except 5V
standby.
Remote sense: Compensates for 0.5 V lead drop min. Will operate without
remote sense connected. Reverse connection protected.
TUV: 60950
UL: 60950
CSA 60950
NEMKO: 60950
AUSTEL: 60950
CB: Certificate and report
CE: Mark (LVD)
RoHS
Embedded Power for
Business-Critical Continuity
Mechanical Drawing
Rev. 03.24.08
LPS120 Series
2 of 3
Operating temperature:
0° to 50°C ambient derate each
output as 2.5% per degree from
50° to 70°C. -20°C start up
Storage temperature: -40°C to +85°C
Electromagnetic
susceptibility:
designed to meetEN61000-4;
-2, -3, -4, -5, -6, -8, -11 Level 3
Humidity:
Operating; non-condensing
10% to 95% RH
Vibration:
IEC68-2-6 to the levels of
IEC721-3-2
MTBF demonstrated
>550,000 hours at full load and
25°C ambient conditions
Environmental Specifications
P1
NEUTRAL
EARTH
4.55
(115.6)
SK1
LIVE
3.00
(76.2)
2.55
(64.8)
0.15" DIA. 4 places
5.00
(127.0)
(4.0)
SK3
V
Adjust
POT
5
1
10
6
SK3
1
2
M3.5 (2 places)
SK2
1.29
(32.8)
0.20" (5)
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