EMERSON LPS172-M, LPS173-M, LPS174-M, LPS175-M Service Manual
Embedded Power for
Business-Critical Continuity
LPS170-M Series
Medical
175 Watts
Special Features
• Medical safety approvals
• Active power factor correction
• IEC EN61000-3-2 compliance
• Wide Range Adjustable output
Remote sense on main output
• Single wire current sharing
• Power fail and remote inhibit
• Built-in EMI filter
• Low output ripple
• Overvoltage protection
• Overload protection
• Thermal overload protection
• DC power good
• 5 V standby output
• 12 V Aux output
• Optional cover (-C suffix)
Total Power: 100 - 175 Watts
Input Voltage: 85-264 VAC
120-300 VDC
# of Outputs: Single
Electrical Specifications
Safety
Input
Input ra nge 85-264 VAC; 120-300 VDC
Frequency 47-67 Hz
Inrush current 38 A max, cold start @ 25°C
Efficiency 75% typical at full load
EMI filter FCC Class B conducted
CISPR 22 Class B conducted
EN55022 Class B conducted
VDE 0878 PT3 Class B conducted
Power Factor 0.99 typical
Safety ground
leakage current
<250 μA @ 50/60 Hz, 264 VAC inputS
Output
Maximum power 110 W convection (75 W with cover)
175 W with 30 CFM forced air
(130 W with cover)
Adjustment range 2:1 wide ratio minimum
Standby outputs 5 V @ 2 A regulated ±5%
Hold-up time 20 ms @175 W load at nominal line
Overload protection Short circuit protection on all outputs.
Case overload protected @ 110-145% above peak rating
Overvoltage protection 10% to 40% above nominal output
Aux output 12 V @ 1 A -5 %, +10%
VDE 0750/EN60601-1 (IEC601)
UL UL2601
CSA CSA 22.2 No. 601.1
CE Mark (LVD)
Rev. 08.07.07
LPS170-M Series
1 of 3
Embedded Power for
Business-Critical Continuity
Ordering Information
Model
Number
Output
Voltage
Minimum
Load
Maximum Load with
Convection Cooling
Maximum
Load with
30CFM
forced Air Peak Load 1Regulation
2
Ripple P/P
(PARD)
3
LPS172-M 5 V (2.5 - 6 V) 0 A 22 A 35 A 38 A ±2% 50 mV
LPS173-M 12 V (6 - 12 V) 0 A 9.1 A 15 A 16.5 A ±2% 120 mV
LPS174-M 15 V (12 - 24 V) 0A 7.3 A 12 A 13.2 A ±2% <1%
LPS175-M 24 V (24 - 54 V) 0A 4.5 A 7.5 A 8.2 A ±2% <1%
1. Peak current lasting <30 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 in parallel with a 0.1 μF capacitor at rated line voltage and load
ranges.
4. Remote inhibit resets OVP latch.
Note: -C suffix added to the model number indicates cover option.
Rev. 08.07.07
LPS170-M Series
2 of 3
Operating temperature: 0° to 50°C ambient;
derate each output at 2.5% per degree from 50° to 70°C
Storage temperature: -40°C to +85°C
Temperature coefficient:
±0.4% per °C
Storage temperature: -40° to 85°C
Electromagnetic
susceptibility: Designed to meet IEC EN61000-4, -2, -3, -4, -5, -6, -8, -11 Level 3
Humidity: Operating; non-condensing 5% to 95%
Vibration: Three orthogonal axes, sweep at 1 oct/min, 5 min. dwell at four
major resonances 0.75G peak 5Hz to 500Hz, operational
MTBF demonstrated: >550,000 hours at full load and 25°C ambient conditions
Environmental Specifications
Logic Control
Power failure
TTL logic signal goes high 100 - 500 msec after V1 output; It
goes low at least 4 msec before loss of regulation
Remote inhibit Requires contact closure to inhibit outputs
Remote sense
Compensates for 0.5 V lead drop min. Will operate without
remote sense connected. Reverse connection protected.
DC - OK
TTL logic signal goes high after main output is in regulation. It
goes low when there is a loss of regulation
Mating Connectors
(SK4) AC Input: Molex 09-50-8051 (USA)
Molex 09-91-0500 (UK)
PINS: 08-58-0111
(SK3) DC Output:
Molex 19141-0058
(SK1) Control Signals:
Molex 90142-0010 (USA)
PINS: 90119-2110 or
Amp: 87977-3
PINS: 87309-8
Astec connector kit #70-841-016
Notes:
1. Specifications subject to change without notice.
2. All dimensions in inches (mm), tolerance is ±0.02”.
3. Specifications are for convection rating at factory settings unless
otherwise stated.
4. Mounting screw maximum insertion depth is 0.12”.
5. Warranty: 2 year
6. Weight: 1.8 lb / 0.85 kg
Pin Assignments
Connector LPS17x
SK1 PIN 1 +12 V
PIN 2 5 V Standby
Pin 3 Common
Pin 4 V1 SWP
PIN 5 Common
PIN 6 +V1 sense
PIN 7 Sense common
PIN 8 Remote inhibit
PIN 9 DC poer good
PIN 10 POK
SK2
TB-1 COMMON
TB-2 Main output
SK3
PIN 1 GROUND
PIN 2 LINE
Pin 5 NEUTRAL
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