Lambda LDS-Y-120, LDS-Y-150, LDS-Y-100, LDS-Y-03, LDS-Y-02 Instruction Manual
...
A
LAMBDA
LAMBDA ELECTRONICS
MELVILLE, L. I., N. Y.
INSTRUCTION MANUAL
FOR
REGULATED POWER SUPPLIES
LDS-Y-SERIES
This manual provides instructions intended for the operation of Ltunbda pKJwer supplies, and is not to be
reproduced without the written consent of Lambda Electronics. All information contained herein applies
to all LDS-Y models unless otherwise specified.
LAMBDA ELECTRONICS MELVILLE, L.I., N.Y.
» IM-LDS-Y
MAIN PLANT TELEPHONE: 516-694-4200
TABLE OF CONTENTS
Section Page
SPECIFICATIONS AND FEATURES 1
OPERATING INSTRUCTIONS 4
Basic Mode of Operation 4
Connections for Operation 4
Supply Load Connections 4
Mounting of L-6-OV Overvoltage Protector Accessory 5
Mounting of LH OV Overvoltage Protector Accessory 6
Operation After Protective Device Shutdown 6
MAINTENANCE 6
General 6
Trouble Analysis 6
Checking Transistors £md Capacitors 6
Printed Circuit Board Maintenance Techniques 7
Performance Checks 7
Adjustment of Calibration Control R105 8
SERVICE 8
PARTS ORDERING 8
IM-LDS-Y
SPECIFICATIONS AND FEATURES
D.
C. OUTPUT — Voltage regulated for line and load. See table I for voltage and current ratings.
TABLE I
MAXIMUM CURRENT (AMPS)*
AT AMBIENT TEMPERATURE
VOLTAGE
MODEL
RANGE
40°C
50° C
60° C
INPUT
POWER
(WATTS)**
LDS-Y-5-0V
LDS-Y-12
LDS-Y-15
LDS-Y-20
LDS-Y-24
LDS-Y-28
LDS-Y-48
LDS-Y-01
LDS-Y-02
LDS-Y-03
LDS-Y-100
LDS-Y-120
LDS-Y-150
Current range must be chosen to suit the appropriate maximum eunbient temperature. Ciurent ratings
apply for entire voltage range.
*Ratings apply for use with cover removed. Use ratings in parentheses when unit is used with cover.
Refer to figure 12 for cover removal.
**With output loaded to full current rating and input voltage 127 volts AC, 60 Hz.
tWith or without cover.
5 ±5%
12 ± 5%
15 ±5%
20 ± 5%
24 ± 5%
28 ± 5%
48 ± 5%
0-7
0-18
0-32
100 ± 5%
120 ± 5%
150 ± 5%
5.4 (5.0)
3.7 (3.4)
3.25 (3.00)
2.5 (2.25)
2.1 (1.9)
1.9 (1.65)
1.3 (1.2)
3.4 (3.4)
1.8 (1.8)
1.1 (1.1)
0.55t
0.45t
0.35t
4.4 (4.0)
2.9 (2.55)
2.50 (2.25)
2.0 (1.80)
1.70(1.55)
1.5 (1.35)
1.05(0.95)
2.9 (2.85)
1.60(1.60)
1.0 (0.95)
0.45t
0.35t
0.25t
3.3 (3.0)
2.0 (1.75)
1.7 (1.55)
1.5 (1.35)
1.3 (1.15)
1.10(1.00)
.75 (0.70)
2.4 (1.80)
1.4 (0.90)
0.80 (0.60)
0.35t
0.25t
0.15t
110
120
120
125
125
130
155
100
110
110
110
110
110
REGULATED VOLTAGE OUTPUT
Regulation (Line) 0.005%+0.5 mV for input variations from 105-127,127-105,
210-254, or 254-210 volts AC.
Regulation (load) 0.005% +0.5 mV for load variations from no load to full load
or full load to no load.
150
MV
Ripple and Noise
Temperature Coefficient
IM-LDS-Y
Y-48 and LDS-Y-01, 02, 03; 250
for LDS-Y-100, 120, 150 with either positive or negative
terminal pounded.
Output change in voltage ±(0.005% +10 MV)/°C on 01, 02, 03
with extemal programming resistors.
01,
150 V units.
rms, 1 mV peak to peak for LDS-Y-5-OV thru - LDS-
MV
rms, 1 mV peak to peak
±(0.01%
02, 03 with intemal programming resistors and on 5V thru
+10 tiV)/°C on
Remote Programming
Extemal Resistor Nominal 1000 ohms/volt output. Downward programming to
voltages less than 1.0 volt must be accomplished in two steps;
first, from original voltage value to 1.0 volt, and then from 1.0
volt to final desired value.
Programming Voltage One-to-one voltage change.
Remote Sensing Provision is made for remote sensing to eliminate effect of
power output lead resistance on DC regulation.
OVERSHOOT — No overshoot under conditions of power tum-on,
AC INPUT — 105-127 or 210-254 volts AC at 47-440 Hz, Standard LDS-Y power supplies are factory
wired for 105-127 volt input, but can be rewired for 210-254 volt input. See figure 8 and schematic
diagram for rewiring of AC input. For input power see table I. Ratings apply for 57-63 Hz input. For
47-53 Hz or 63-440 Hz input consult factory. Where applicable, regulatory agency approval applies only
for input voltages up to 250VAC.
OVERLOAD PROTECTION
Thermal Thermostat, resets automatically when over temperature con-
dition is eliminated.
Electrical Automatic electronic ciurent limiting circuit, limits output
current to a safe value. Automatic current limiting protects
the load and power supply when extemal overloads and direct
shorts occur.
OVERVOLTAGE PROTECTION - Model LDS-Y-5-OV includes a fixed buUt-in overvoltage protection
circuit which prevents damage to the load caused by excessive power supply output voltage. Overvoltage
protection range varies between 6.4 and 6.8 volts D.C.
INPUT AND OUTPUT CONNECTIONS - Refer to figure 12 for location.
AC input Screw terminals on printed circuit board
turn-off,
or power failure.
Ground 6-32 stud on printed circuit board
DC output Screw terminals on printed circuit board
Sensing Screw terminals on printed circuit board
OPERATING AMBIENT TEMPERATURE RANGE AND DUTY CYCLE - Continuous duty from 0°C to
60° C ambient with conesponding load current rating for all modes of operation.
STORAGE TEMPERATURE (non operating) - -55° C to
TRANSFORMER - MIL-T-27C, Grade 6; electrostatic shield; 4,000 VAC input/output isolation.
FUNGUS — All LDS-Y power supplies are fungus inert.
+85° C
IM-LDS-Y
Loading...