EMERSON LPT50-M Service Manual
Rev. 06.20.06
LPT50-M Series
1of 3
Embedded Power for
Business-Critical Continuity
LPT50-M Series
50 Watts
Special Features
• Medical Safety Approvals
• Universal input
• 2" x 4" footprint
• Overpower and short circuit
protection
• High efficiency
• High MTBF
• Built in EMI filter
(CISPR 22 Class B)
• LED power good indicator
• Input power <74 watts
• Complies with EN61000-3-2
• UL Class I approved
Total Power: 47 - 55 Watts
Input Voltage: 90-264 VAC
127-300 VDC
# of Outputs: Triple
Electrical Specifications
Safety
Input
Input range 90-264 VAC (wide range) 127-300 VDC
Frequency 47-440 Hz
Inrush current <60 A peak @ 230 VAC, cold start @ 25°C
Efficiency 80% typical at full load
EMI RFI
FCC Class B conducted; CISPR 22 Class B conducted: EN55022
Class B conducted, EN60601-1-2
Safety ground
leakage current
275uA @ 50/60 Hz, 264 VAC input
Output
Maximum power 55 W for convection (LPT51, 47.4W)
Hold-up time 10/20 ms 115/230 VAC input line
Overpower protection
Short circuit protection on all outputs
Case overpower protected @ 110-160% of normal rating
Overvoltage protection 30-50% above nominal output
Operating temperature:
0° to 50°C ambient. Derate each output 2.5% per degree
from 50° to 70°C. -20°C start up
Storage temperature: -40°C to +85°C
Electromagnetic
susceptibility: Designed to meet EN61000-4; -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
UL UL 60601-1
CSA CSA-C22.2 No. 601.1-M90
VDE EN60601-1
CE LVD
RoHS
Rev. 06.20.06
LPT50-M Series
2of 3
Embedded Power for
Business-Critical Continuity
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SK1-1 Line Line Line Line
SK1-3 Neutral Neutral Neutral Neutral
SK2-1 +3.3 V +5 V +5V +5V
SK2- 2 +3.3 V +5 V +5V +5V
SK2- 3 Common Common Common Common
SK2-4 Common Common Common Common
SK2-5 12V -12V -15V +12V
SK2-6 5V +12V +15V +24
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AC Input:
Molex 09-50-8031 (USA)
09-91-0300 (UK)
PINS: 08-52-0113
DC Outputs:
Molex 09-50-8061 (USA)
09-91-0600 (UK)
PINS: 08-52-0113
Astec Connector Kit #70-841-006, includes all of the above
1. Specifications subject to change without notice.
2. All dimensions in inches (mm), tolerance is ±0.02" (±0.5mm)
3. Mounting holes M1 and M2 should be grounded for EMI purposes.
4. Mounting hole M1 is safety ground connection.
5. Specifications are for convection rating at factory settings at 115 VAC
input, 25°C unless otherwise stated.
6. Warranty: 1 year
7. Weight: 0.45lbs/0.20kg
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LPT51-M +3.3V
+5V
+12V
0.8A
0.1A
0A
8A
3A
0.5A
9A
4A
1A
±2%
±6%
±5%
50 mV
50mV
120mV
LPT52-M +5V
+12V
-12V
0.5A
0.1A
0A
8A
3A
0.5A
9A
4A
1.0A
±2%
±5%
±5%
50 mV
120mV
120mV
LPT53-M +5V
+15V
-15V
0.5A
0.1A
0A
8A
2.4A
0.5A
9A
3.2A
0.7A
±2%
±5%
±5%
50 mV
150mV
150mV
LPT54-M +5V
+24V
+12V
0.5A
0.1A
0A
8A
1.5A
0.5A
9A
2A
0.7A
±2%
±7%
±5%
50 mV
240mV
120mV
1. Peak current lasting <15 seconds with a maximum 10% duty cycle.
2. At 25°C including initial tolerance, line voltage, load currents and output voltages adjusted to factory settings.
3. Peak-to-peak with 20 MHz bandwidth and 10 μF (tantalum capacitor) in parallel with a 0.1 μF capacitor at
rated line voltage and load ranges.
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