Lambda LOT-W-5152-A, LOT-X-5152-A Service Manual

INSTRUCTION MANUAL

REGULATED POWER SUPPLIES

LOT—W-5152-A, LOT—X-5152-A

SPECIFICATIONS AND FEATURES

DC OUTPUT — Voltage regulated for line and load. For voltage and current ratings see table I below.

TABLE I

MAXIMUM CURRENT (AMPS)

MODEL

LOT-W-5152-A

LOT-X-5152-A

Current range must be chosen to suit the appropriate maximum ambient temperature. Current ratings apply for entire voltage range.
REGULATED VOLTAGE OUTPUT (each output)

Regulation (line) 0.15% for input variations from 105-125, 125-105, 210-250, or
Regulation (load) 0.15% for load variations from no load to full load or full load to no
Ripple and Noise 1.5mV rms, 5mV peak to peak.

Temperature Coefficient 0.03%/°C
Remote Programming (5V output only)

Extemal Resistor Nominal 200 ohms/volt output. Use a low temperature coefficient
Programming Voltage One-to-one voltage change. The programming supply must have a

Remote Sensing Provision is made for remote sensing to minimize the effect of

VOLTAGE

RANGE

5±5%

±12 to±15

5 ±5%

±12 to ±15

AT AMBIENT TEMPERATURE

40° C

6.0

1.0

3.0

0.500

250-210 volts AC.

load.

resistor to assure most stable operation.
reverse current capability of 6 ma. min.
power output lead resistance on DC regulation. Sensing leads

should be a twisted pair to minimize AC pickup. A 2.5 mf, elect.,
capacitor may be required between output terminals and sense
terminals to reduce noise pickup.

50°C

4.5

0.750

2.2

0.375

60° C

3.0

0.400

1.4

0.200

1

OVERSHOOT — No overshoot under conditions of power tum-on,
AC INPUT —105-125 or 210-250 volts AC at 47-440 Hz. Standard LOT-W and LOT-X power supplies are factory wired for 105-125

volt input, but are available factory wired for 210-250 volt input. See Figure 1 and schematic diagram for rewiring of AC input.
Input power*: 175 Watts (LOT-W) 90 watts (LOT-X). Power factor*: 0.8. Ratings apply for 57-63 Hz input. For 47-53 Hz
input derate current 10% for each ambient temperature given in table I. For 63-440 Hz input consult factory.

•With output loaded to full current rating and input voltage 125 volts AC, 60 Hz.

TRACKING (±12 to ±15V output only) — Absolute difference between negative and positive outputs within 2%; 0.2% change for all

conditions of line, load, and temperature.

OVERLOAD PROTECTION — Automatic electronic current limiting circuit, limits output current to a safe value, protecting load and

power supply when overloads and direct shorts occur.

INPUT AND OUTPUT CONNECTIONS - See outline drawing for location.

AC input Terminals on transformer
Ground Terminal on transformer
DC output Turret terminal on printed circuit board
Sensing Turret terminal on printed circuit board
Overvoltage Protector Quick disconnect terminal on printed circuit board with mating con-

OPERATING AMBIENT TEMPERATURE RANGE AND DUTY CYCLE

corresponding load current ratings for all modes of operation.
STORAGE TEMPERATURE - -20°C to +85°C
DC OUTPUT CONTROL — Screwdriver voltage adjust controls permit adjustment of DC output voltages. One control simultane-

ously adjusts the dual (±12 to ±15V) outputs. A separate control is provided for the single, 5V output. See outline drawing

for location of controls.
GUARANTEE — 60 day guarantee from date of shipment
PHYSICAL DATA

Size LOT-W: 9" x 4-7/8" x 2-3/4"; LOT-X: 7" x 4-7/8" x 2-3/4"

Weight LOT-W: 7-3/4 lbs. net, 8-1/4 lbs. shipping; LOT-X: 5-1/2 lbs. net,

Finish Gray, FED. STD. 596 No. 26081

turn-off,

nector attached.

. . materials and labor.

6 lbs. shipping.

or power failure.

Continuous duty from 0°C to +60 C ambient with

MOUNTING — Three surfaces, each with clearance mounting holes, can be utilized for mounting this unit. Air circulation is

required when unit is mounted in confined areas. Refer to Outline Drawing for mounting details.

"J"

OPTION - Standard LOT-W and LOT-X power supplies can be obtained for 90-110 VAC, 47-440 Hz input. For 47-53 Hz

input derate current 10% for each ambient temperature given in table I. For 63-440 Hz input consult factory.

ACCESSORIES

Overvoltage protector L-12-0V series Overvoltage Protectors are available.

ACI D AC2

LkUMJ

BLK WHT

1 1

j|tAC

INPUT CONNECTION SHOWN IS FOR I0S-I25VAC
FOR 2IO-250V INPUT, DISCONNECT BLK a WHT TRANFORMER
LEADS FROM TERMS ACI B AC2 ANO RECONNECT BOTH LEADS
TO TERM 0

AC INPUT

±

o

Figure 1. AC Input Connection.

OPTIONAL

OVERVOLTAGE

PROTECTOR

-OV +0V

-V COM -fV

HVs/v-*-vv\ni

LOA 0(8)

*»

(A) LOCAL SENSING CONFIGURATION. (B) REMOTE SENSINS

OPTIONAL

OVERVOLTAGE

PROTECTOR

-OV -wv

-S -V +7 -fS

•WV/*
LOAD

* LOAD(S) CAN BE CONNECTED IN ANY LOAO(S)

W » A 2.SMF,ELECT.,CAP. MAY BE REQUIRED.

INPUT

Figure 2. AC Input Connection, "J" Option.

OPTIONAL

OVERVOLTAGE

PROTECTOR

-OV +0V

-V COM -fV

OPTIONAL

OVERVOLTAGE

PROTECTOR

^

-OV +0V

-S -V *v +s

99

W

««

W

««

LOAD

Figure 3. DC Output Connection.

-S -V tV •$

-S -V W +8

^9?

PROG VTCE.

200/\/

VOLT

•wv*

LOAD

PROO.

VTOE.

200 A /VOLT

—

"Vwii

LOAD[

i

Tit-

t.SMF

toov

(A) LOCAL SENSING (B) REMOTE SENSING

» A 2.SMF, ELECT.,CAP. MAY

BE

REQUIRED.

Figure 4. Programmed Voltage, With External Resistor (5V Output Only).

Z.SMF

200V