EMERSON LPQ250 Service Manual
Technical Support: (888) 41-ASTEC or (407) 241-2752
Americas: (760) 930-4600 Europe (UK) 44 (1384) 842-211 Asia (HK) 852-2437-9662
124
Special Features
Electrical Specs
250 Watts
LPQ250 Series
Input
Input range 85-264 VAC; 120-300 VDC
Frequency 47-440 Hz
Inrush current 20 A max., cold start @ 25°C
Efficiency 75% typical at full load
EMI filter FCC Class B conducted and radiated
CISPR 22 Class B conducted and radiated
EN55022 Class B conducted and
radiated
VDE 0878 PT3 Class B conducted and
radiated.
Power factor 0.99 typical
Safety ground leakage
current <0.5 mA @ 50/60 Hz, 264 VAC input
Output
Maximum power With cover: 250 W with 30 CFM forced
air,
(-C) (-CF) (-CEF).
Adjustment range ±5% min. on main: 5-25 V on 4th output
Supervisory outputs 5 V @ 100 mA regulated, 12 V @ 500
mA
Hold-up time 16 ms @ 250 W load, 115 VAC nominal
line
Overload protection Short circuit protection on all outputs.
Case overload protected @ 110-145%
above peak rating
Overvoltage protection 5 V output: 5.7-6.7 VDC.
Logic Control
Power failure TTL logic signal goes high 50-150 msec
after 5V output. It goes low at least 4
msec before loss of regulation
Remote on/off Requires an external contact (N.O or
N.C) to inhibit outputs
DC-OK TTL logic goes high 50-150 msec after 5
V output. It goes low when there is loss
of regulation.
Remote sense Compensates for 0.5 V lead drop min.
Will operate without remote sense
connected. Reverse connection
protected.
• Active power factor correction
• IEC EN61000-3-2 compliance
• Remote sense on main output
• Power fail and remote inhibit
• Single wire current sharing
• Built-in EMI filter
• Adjustable floating 4th output
• 2 Supervisory outputs 5 V and 12 V
• Overvoltage protection
• Overload protection
• Thermal overload protection
• DC power good
•Cover -C
• 120 KHz switching frequency
• Optional with fan cover -CF
• Optional end fan cover -CEF
Operating temperature: 0° to 50°C ambient
derate each output at 2.5% per degree from
50° to 70°C
Electromagnetic susceptibility: Designed to
meet IEC 801, -2, -3, -4, -5, -6, 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 0.7 G peak 5 Hz to 500 Hz,
operational
Storage temperature: -40° to 85°C
Temperature coefficient: ±.04% per °C
MTBF demonstrated: >550,000 hours at full
load and 25°C ambient conditions
VDE 0805/EN60950 (IEC950) 11774-3336-1262
UL UL1950 E132002
CSA CSA 22.2-234 Level 5 LR53982C
NEMKO EN 60950/EMKO-TUE P95103550
(74-sec) 203
CB Certificate and report 2186
CE Mark (LVD)
Environmental
Total Power: 250 Watts
Input Voltage: 85-264 VAC
120-300 VDC
# of Outputs: Quad
Safety
rev 12.14.03
EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
AMERICAS
5810 Van Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
125
www.astecpower.com
Ordering Information
ASIA
Units 2111-2116, Level 21
Tower1, Metroplaza
223, Hing Fong Road
Fwai Fong, New Territories
Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
Model Output Minimum Maximum Load with Peak Regulation2 Ripple
Number Voltage Load 30 CFM Forced Air Load1 P/P (PARD)3
LPQ252-C +5 V 3 A 35 A 40 A ±2% 50 mV
+12 V 0 A 10 A 12 A ±3% 120 mV
-12 V 0 A 6 A 8 A ±3% 120 mV
±5-25 V 0 A 6 A 8 A ±3% 240 mV, max.
LPQ253-C +5 V 3 A 35 A 40 A ±2% 50 mV
+15 V 0 A 10 A 12 A ±3% 150 mV
-15 V 0 A 6 A 8 A ±3% 150 mV
±5-25 V 0 A 6 A 8 A ±3% 240 mV, max.
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. 4th output 5-25 V factory set at 5 V.
5. Minimum Load is are required.
6. If optional CF or CEF fans are not used, 30CFM forced air cooling needs to be provided and is required through the length of the power supply.
Not convection rated.
Note: -CF suffix added to the model number indicates cover with top fan. -CEF suffix added to the model number indicates cover with dual end
mounted fan cover and AC inlet.
5.0 (127.0)
2.0
(50.8)
1.18 (30.0)
9.0
(228.6)
6.64
(168.6)
3.42 (87.0)
.79
(20)
SK3
SK1
12345678
3 2 1
SK5
+ve -ve
Terminal
Block TB1
O/P ADJ.
SK4
FAN
#6-32 UNC (8 places)
5.46
(138.6)
8.52
(216.4)
M3 (8 places)
3.68
(93.6)
3.15
(80)
2.17
(55)
3.0
(76.2)
.55
(14)
1.30
(33.0)
Optional
(-CF)
Cover
with Fan
Optional
(-CEF)
Cover
with fans
10.32
(262.0)
SK7
FAN
AC Inlet
10.0
10.0
10.0
M3
#6-32 UNC (2 places)
#6-32 UNC
(2 places)
#6-32 (2 places)
M3 (2 places)
4th O/P ADJ.
.24 (6.1)
6-32 (2 places)
Main Output
6-32 (3 places)
SK2
6 5 4 3 2 1
M3
(6 places)
M3
Connector
SK1 PIN 1 Neutral
PIN 2 Line
PIN 3 Ground
SK2 PIN 1 +12 / 15 V
PIN 2 Common
PIN 3 Common
PIN 4 -12 / 15 V
PIN 5 5-25 V RET Float
PIN 6 5-25 V Float
SK3 PIN 1 + Remote sense
PIN 2 - Remote sense
PIN 3 Remote inhibit (N.O)
PIN 4 Remote inhibit (N.C)
PIN 5 Common
PIN 6 Current sharing
PIN 7 Power Fail
PIN 8 DC Power Good
SK4 PIN 1 + Fan’s power source (12 V @ 500 mA)
PIN 2 - Fan’s power source (12 V @ 500 mA)
SK5 PIN 1
+ Supervisory output supply (5 V @ 100 mA)
PIN 2
- Supervisory output supply (5 V @ 100 mA)
SK7 PIN 1 + Fan’s power source (12 V @ 500 mA)
PIN 2 - Fan’s power source (12 V @ 500 mA)
Mating Connectors
SK3 Molex: 22-01-1084
PINS: 08-70-0057
SK4 Molex 22-01-3027
PINS: 08-50-0114
SK5 Molex 22-01-3027
PINS: 08-50-0114
SK7 Molex 22-01-3027
PINS: 08-50-0114
Astec Connector Kit #70-841-005, includes all of the above.
Pin Assignments
LPQ250 Series
Notes:
1. Specifications subject to change without notice.
2. All dimensions in inches (mm), tolerance ±.02”.
3. Specifications are at factory se
ttings.
4. To enable normally closed remote inhibit, cut
jumper J1
5. Mounting maximum insertion depth is 0.12”.
6. Warranty: 1 year
7. Weight: 3.1 lb. / 1.41 kg
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