Sorensen
SRLSERIES
Power Supplies
Instruction Man
Convection Mode s
10-25
20-12
20-25
40
40 1
60
0-8
an Models
10-50
10-100
20-50
40-25
40-50
60-17
60-35
SORENSEN
Division of Elgar
9250 Brown Dee
San Diego, CA
1-800-525-20
Tel: (858)
Fax: (85
Email:
©1999 by Sorensen, Division of Elgar Electronics Corporation
This document contains information proprietary to Sorensen, Elgar Electronics Corporation. The information
contained herein is not to be duplicated or transferred in any manner without prior written permission from Sorensen.
July 1999
Document No. 1058427 Rev T
SORENSEN FIVE-YEAR WARRANTY
Sorensen, a division of Elgar Electronics Corporation, warrants its products to be free from defects in
material and workmanship. This warranty is effective for five years from the date of shipment of the product
to the original purchaser. Liability of Sorensen under this warranty shall exist provided that:
the Buyer exposes the product to normal use and service and provides normal maintenance on the
product;
Sorensen is promptly notified of defects by the Buyer and that notification occurs within the warranty period;
the Buyer receives a Return Material Authorization (RMA) number from Sorensen's Repair Department
prior to the return of the product to Sorensen for repair, phone 800-458-4258;
the Buyer returns the defective product in the original, or equivalent, shipping container;
if, upon examination of such product by Sorensen it is disclosed that, in fact, a defect in materials and/or
workmanship does exist, that the defect in the product was not caused by improper conditions, misuse,
or negligence; and,
that Sorensen QA seal and nameplates have not been altered or removed and the equipment has not been
repaired or modified by anyone other than Sorensen authorized personnel.
This warranty is exclusive and in lieu of all other warranties, expressed or implied, including, but not limited
to, implied warranties of merchantability and fitness of the product to a particular purpose. Sorensen, its
agents, or representatives shall in no circumstance be liable for any direct, indirect, special, penal, or
consequential loss or damage of any nature resulting from the malfunction of the product. Remedies under
this warranty are expressly limited to repair or replacement of the product.
CONDITIONS OF WARRANTY
To return a defective product, contact an Sorensen representative or the Sorensen factory for an RMA
number. Unauthorized returns will not be accepted and will be returned at the shipper's expense.
For Sorensen products found to be defective within thirty days of receipt by the original purchaser,
Sorensen will absorb all ground freight charges for the repair. Products found defective within the warranty
period, but beyond the initial thirty-day period, should be returned prepaid to Sorensen for repair. Sorensen
will repair the unit and return it by ground freight pre-paid.
Normal warranty service is performed at Sorensen during the weekday hours of 7:30 am to 4:30 pm Pacific
time. Warranty repair work requested to be accomplished outside of normal working hours will be subject to
Sorensen non-warranty service rates.
Warranty field service is available on an emergency basis. Travel expenses (travel time, per diem expense,
and related air fare) are the responsibility of the Buyer. A Buyer purchase order is required by Sorensen
prior to scheduling.
A returned product found, upon inspection by Sorensen, to be in specification is subject to an inspection fee
and applicable freight charges.
Equipment purchased in the United States carries only a United States warranty for which repair must be
accomplished at the Sorensen factory.
Sorensen
Committed to Qua/ity... Striving for Excellence
TABLE OF CONTENTS
INTRODUCTION
SECTION 1
Page
1.1
PURPOSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1.2
DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1. 2 .1
1. 2 . 2
1-1
1-1
Physical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-
INSTALLATION
SECTION 2
2.1
GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2. 2
INITIAL INSPECTION. . . . . . • . . . • . . • • . . . . • • . • • • • • • • • • • • • .
2-1
2.3
ELECTRICAL INSTALLATION............................
2-2
2. 4
ELECTRICAL INSPECTION. • . . . • • . • • • • • . • • • • • • • • . • • • . . • • •
2-2
2.4.1
2.4.2
2-2
2-3
SECTION 3
Voltage Mode . ................................. .
Current Mode . ............................... .
OPERATION
3.1
GENERAL . ............................................. .
3-1
3.2
VOLTAGE MODE OPERATION ......••..•••••••••••.•••...
3-1
3.2.1
3.2.2
3.2.3
3-1
3-1
3-2
3.3
3.4
3.5
Local Sensing ................................ .
Remote Sensing . ............................. .
Remote Programming ......................... .
CURRENT MODE OPERATION ........•....•...•.....•...
3-5
3.3.1
3-5.
Remote Programming ......................... .
SERIES OPERATION .......................•.....•.•.••••
3-8
3.4.1
3.4.2
Local Sensing . ............................... .
Remote Sensing ...........•...................
3-8
3-9
PARALLEL OPERATION .....•..•.••..••..•••.•........•.
3-9
3.5.1
3.5.2
3.5.3
3-12
3-12
3-12
Local Sensing ................................ .
Remote Sensing . ............................. .
Overvoltage Protection {OVP) •.•..••.••••..•..
i
TABLE OF CONTENTS (Cont'd)
SECTION 4
THEORY OF OPERATION.
Page
4.1
GENERAL . ............................. • ............... · . ·
4-1
4.2
SCR PREREGULATED SERIES PASS PRINCIPLE ......... .
4-1
4.3
SRL POWER SUPPLY THEORY .......................... .
4-2
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.3.8
Reference Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Mode Section. . . . . . . . • . . . . . . • . . . . . . . . . .
Power Limiting Circuit..................... . . .
Current Mode Section. . . . . . • . • . . . • . . . . • . . . . . . .
Drivers and Passing Stages. . . . . . . . • . . • • . . . . . .
Preregulator. . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . .
Overvoltage Protection. . . . . . . . . . . . . . . . . . . . . . . .
4-2
4-4
4-5
4-5
4-6
4-6
4-6
Reverse Bias Section. . . . . . . . . • . . . . • • • • . . . . • . . .
4-7
4..3.9
Stabilization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Section . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .
Thermal Overload Section. . . . . . . . . . . . . . . . . . . . . .
Collector Supply. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .
4-7
4-7
4-7
4-7
4.3.10
4.3.11
4.3.12
SECTION 5
MAINTENANCE
5·.1
GENERAL . ............................................. .
5-1
5.2
PERIODIC SERVICING .................................. .
5-1
5.3
TROUBLESHOOTING ...............................•..•.
5-1.
5.4
CALIBRATION ......................................... .
5-1
5.4.1
5.4.2
Preliminary Adjustments ...................... .
5-2
5-2
PERFORMANCE TEST. . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . .
5-4
5.5.1
5-5
5-5
5-5
5-6
5-6
5. 5
5.5.2
5.5.3
5.5.4
5.5.5
Pre-Test Inspection .......................... .
Voltage Mode Regulation .......•...•.........•.
Voltage Mode PARD ........••.......•...•.....
Current Mode Regulation .........•......•.•...
Current Mode PARD .. ....................... .
Drift . ....................................... .
ii
TABLE OF CONTENTS ( Cont'd)
SECTION 5
5.6
SECTION 6
MAINTENANCE
HI- POT TEST PROCEDURE ..••..•..•.•..•...•..........
Page
5-8
DRAWINGS AND PARTS LISTS
6.1
GENERAL . .................................... · · · · · · · · · ·
6-1
6.2
ORDERING PARTS .........•.•.•••..•.•••.•.. ~ .•........
6-1
iii
LIST OF ILLUSTRATIONS
Title
Figure
1-1
1-2
2-1
2-2
2-3
3-1
3-2
3-3
3-4(a)
3-4(b)
3-5(a)
3-5(b)
4-1
4-2
5-1
5-2
5-3
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
Front Panel Controls and Indicators (Typical) (Convection
Models) ..................................................... .
Front Panel Controls and Indicators (Typical) (Fan Models) ..
SRL Outline Drawing 3 1/2" Panel Series .................... .
SRL Outline Drawing 5 1/4" Panel Series .................... .
SRL Outline Drawing 7" Panel Series ........................ .
Unity Gain . ................................................. .
Variable Gain ............................................... .
Current Programming by Voltage Signal. .................... .
Local Sensing - Series Operation ............................ .
Remote Sensing - Series Operation .......................... .
Local Sensing - Parallel Operation ........................... .
Remote Sensing - Parallel Operation ......................... .
Series Pass Principle ........................................ .
SRL System Block Diagram .................................. .
T3 Scope Display ........................................... .
Voltage Mode Performance Test Setup ..... ~ ................. .
Current Mode Performance Test Setup ...................... .
Typical Chassis Assemblies, SRL Convection Cooled Units ... .
SRL Convection Cooled Units Schematic Diagram ............ .
PCB Component Layout (All Units) .......................... .
Typical Chassis Assemblies, SRL Fan Cooled Units .......... .
SRL Fan Cooled Units Schematic Diagram ................... .
SRL Current Derating Characteristics ....................... .
SRL - Typical Output Impedance Curves .................... .
Typical Crossover Characteristics (SRL 20-12) .............. .
Firing Section Waveforms .................................... .
1
I
iv
1-2
1-3
2-4
2-5
2-6
3-4
3-4
3-8
3-10
3-10
3-11
3-11
4-1
4-3
5-3
5-7
5-7
6-2
6-3
6-9
6-15
6-16
6-28
6-28
6-29
6-30
LIST OF TABLES
Table
1-1
1-2
1-3
1-4
3-1
5-1
5-2
6-1
6-2
6-3
6-4
Title
Page
SRL Panel Controls/Indicators (Convection Models) .......... .
SRL Panel Controls/Indicators (Fan Cooled Models) .......... .
Convection Cooled Unit Specifications ........................ .
Fan Cooled Unit Specifications ............................... .
Programming Constants (Current Mode) ...................... .
Difference Data .............................................. .
SRL Troubleshooting Chart ................................... .
Replaceable Parts List, Main Assembly, SRL Convection Cooled
Units ....................................................... .
Replaceable Parts List, PCB Assembly, SRL Convection Cooled
Units ....................................................... .
Replaceable Parts List, Main Assembly, SRL Fan Cooled Units
Replaceable Parts List, PCB Assembly, SRL Fan Cooled Units
1-2
1-3
1-6
1-12
3-6
5-4
v
5-9
6-4
6-10
6-17
6-23
SECTION 1
INTRODUCTION
1.1
PURPOSE
This manual contains operation and maintenance data on the SRL series power
supplies. The purpose of the manual is to familiarize the user with unit functions , to introduce the varied configurations to which the unit is convertible and
to provide the necessary maintenance data to assure long operating life.
I
Six major sections form the content of this manual. Section 1 contains a description of the series highlights important features, and tabulates complete specifications. Inspection and initial checkout procedures are covered in section 2. ·
Operation procedures are outlined in section 3. Section 4 details the theory of
operation and section 5 provides maintenance, service and repair instructions.
Schematics parts lists operating curves and waveforms are included in section 6.
I
I
I
1. 2
1
DESCRIPTION
The SRL series consists of seven convection cooled models in the 250W to 500W
range and seven fan cooled models in the 500W to 2 kW range. Both have outputs ranging to 60 Vdc. Differences in models are noted as applicable.
I
1.2.1
Physical
SRL power supplies are designed for either bench or rack mounted use and for
easy component accessibility. All controls used in normal operation are mounted
on the front panel. Power outputs up to 25 Amperes may be taken from the unit
front mounted binding posts. The mode selector terminal board is at the rear of
the supply. Through manipulation of the terminal board links the functions of
voltage/current mode programming remote sensing and parallel operation are
obtained. Output terminals are also provided at the rear of the unit.
I
I
I
Models 20-12 40-6 and 60-4 have an input fuseholder and use a front panel
power switch. The other convection cooled models (SRL 10-25, 20-25, 40-12, and
60-8) and all fan cooled models ( SRL 10-50 10-100 1 20-50, 40-25, 40-50 60-17 1
and 60-35) use a circuit breaker.
I
I
1
1.2.2
1
Functional
The SRL power supplies provide a precisely regulated de output, adjustable
over a wide range. They operate from any of three available ac inputs 1 and
exhibit rapid response to transients both load and ~ine. Unit characteristics
are outlined in specifications table 1-3 and 1-4.
I
All semiconductors used in the SRL series are silicon types, and contribute
significantly to the unit ambient temperature characteristics. High dissipation
transistors are mounted to a cast aluminum alloy heatsink; low dissipation devices are located on a plug in printed circuit board.
Introduction
1-1
Rev B (3/84)
Table 1-1
SRL Panel Controls/Indicators (Convection Models)
Control
. Function
POWER Switch: (CB 1/51)
Sl (Models 20-12, 40-6, 60-4)
CB1 (Models 10-25, 20-25,
40-12, 60-8)
Applies ac line voltage to input of
put of power supply.
POWER Light (DSl)
Illuminates when POWER switch is in
the ON position. (And internal ·fuse
is not blown).
OVERVOLTAGE SET (S2)
Momentary toggle switch, when depressed causes panel de VOLTS meter
to indicate overvoltage trip level.
OVERVOLTAGE ADJ (R85)
Recessed potentiometer to adjust trip
level of overvoltage circuit.
OVERVOLTAGE INDICATOR (DS2)
Illuminates when limit set by OVERVOLTAGE ADJ (R85) has been exceeded
by the power supply output voltage.
VOLTAGE Controls (R53A, R53B)
Provide coarse and fine adjustment
of output voltage.
(Voltage Mode)
DC VOLTS Meter (Ml)
Provides direct readout of voltage
selected by voltage controls.
DC AMPERES Meter (M2)
Provides direct readout of load current.
CURRENT Controls (R18A, R18B)
Provide coarse and fine adjustment
of output current.
(Current Mode)
DS1
C81/S1
0
]
0
Figure 1-1 Front Panel Controls and Indicators (Typical) (Convection Models)
Introduction
1-2
Rev B (3/84)
Table 1-·2
SRL Panel Controls/Indicators (Fan Cooled Models)
Function
Control
POWER light (DSl)
Illuminates when POWER switch is in
the on position.
OVERVOLTAGE SET ·(52)
Momentary toggle switch, when depressed causes panel DC VOLTS meter
to indicate overvol tage trip level.
OVERVOLTAGE ADJ (R85)
Recessed potentiometer to adjust trip
level of overvoltage circuit.
OVERVOLTAGE INDICATOR (DS2)
Illuminates when limit set by OVERVOLTAGE ADJ (R85) has been exceeded
by the power supply output voltage.
DC VOLTS Meter (Ml)
Provides direct readout of voltage.
DC AMPERES Meter (M2)
Provides direct readout of load current.
CURRENT Controls (RISA), (R18B)
Provide coarse and fine adjustment
of output current.
(Current Mode)
VOLTAGE Controls (53A, R53B)
Provide coarse and fine adjustment
of output voltage.
(Voltage Mode)
THEMAL OVERLOAD (DS3)
Illuminates when unit temperature exceeds a preset limit.
POWER Switch (CBl)
Turns on the power supply.
C81
R188
Figure 1-2 Front Panel Controls and Indicators (Typical)
Introduction
1-3
(Fan Models)
Rev B (3/84)
1. 2. 2 .1
Operating Modes
SRL models have two basic operating modes: constant voltage and constant current.
In the former, the output voltage is regulated. by the front panel selected or programmed value, and the output current varies with the load. In
constant current operation, the output current is regulated at the selected value while the output voltage varies as a function of load.
Automatic Crossover
1. 2 . 2 . 2.
The automatic crossover capability enables the unit to transfer operating modes as
a function of load requirements. If, for example, load current attempts to increase above the setting of the current adjust control, the unit will switch operation automatically from the voltage to the current mode. If the load requirements
are lowered, return to the voltage mode will occur automatically.
Remote Programming
1 . 2 . 2. 3
Any SRL model may be remotely programmed, that is, its output may he altered
from a distant location in either the voltage or current mode by introducing a
calculated resistance or signal into the appropriate programming circuit. This
may be readily accomplished through the link arrangements at the rear terminal
board.
Remote Sensing
1. 2 . 2. 4
Terminals located on the rear terminal board offer the means of extending a unit's
regulating point from the output terminals to the load. This, in effect, compensates for variations in the load lead voltage drop. The maximum drop for which a
unit will compensate is one volt per load lead.
Series Operation
1 . 2. 2. 5
For applications requiring voltages higher than a single SRL can · provide, a
number of units may be connected in series. Maximum system output is specified
at 200 Vdc. Unit connections are illustrated il1 Section 3. Regulation in series
operation is the sum of the regulations for all units. In series operation, external rectifiers to protect units against reverse voltage, developed by a unit malfunction are unnecessary. Reverse voltage protection is designed into the unit.
I
Parallel Operation
1. 2. 2. 6
Parallel operation may be used to service those applications requiring a higher
output current than a single SRL can provide. Unit connections are illustrated in
~e~tion 3. Paralleling is indirect through a master /slave approach, i.e. , the amplifier of the master unit controls the output of all units in the system. In parallel
operation the maximum output current of each unit is derated to 90%.
I
1. 2. 2. 7
Protection Features
Protection against the effects of overloads and internal short circuits is provided;
in the first case, by automatic crossover, and in the second by the input fuse or
Introduction
1-4
Rev B (3/84)
circuit breaker. In addition, open sensing leads or links will not drive the unit
into high output voltage. 'Internal rectifiers preclude this by clamping the output
to approximately 1-1/2 volts above output setting.
Internal control circuitry is protected by a fuse connected in the primary of the
input transformer.
Fan cooled units are additionally protected by a thermostatic control circuit to
. automatically shut the unit down in the event of thermal overload.
Introduction
1-5
Rev B (3/84)
Table 1-3
Convection Cooled Unit Specifications {Sheet 1 of 6)
ALL
Voltage Range
105-125V (Standard)
190-230V {HI)
210-250V (H2)
Frequency
47-53/57-63Hz
INPUT RATINGS
Phase
20-12
40-6
60-4
10-25
20-25
7.8
4.3
3.9
6.3
3.5
3.2
6.0
3.3
3.0
7.5
4.1
3.75
13.6
7.5
6.8
0.65
0.58
0.66
0.67
421
561
SOl
0-20
o-4o
0-12
0-671 Io
Max
0-6
0-671, Io
Max
. 40-12
60-8
1
Current (Adc Max)
@ 115Vac
@ 210Vac
.....
•
en
@ 230Vac
Power Factor (typical)
Efficiency (typ)
OUTPUT RATINGS
Voltase Mode:
Voltage Range (Vdc)
Coarse
Fine
Resolution (typ)
Current Range (Adc)
Full Range
It of Full Range
O.Ott of Full Range
@ 55°C
@ 71°C
0-Io Max.
Current Mode:
Current Range:
Same as in Voltage
Mode.
12.5
6.9
6.25
0.64
13.2
1.3
6.6
0.56
45.51
52.51
601
641
o-6o
0-10
0-20
0-40
0-60
0-4
o-671 Io
Max
0-25
0-771 Io
Max
0-25
0-501. Io
Max
0-12
0-671. Io
Max
0-8
0-671, Io
Max
0.54
Table 1-3
Convection Cooled Unit Specifications (Sheet 2 of 6)
ALL
20-12
40-6
60-4
10-25
20-25
40-12
60-8
200
200
300
350
300
300
300
30
30
30
20
30
30
30
30
30
30
30
70
70
150
150
150
150
150
150
70
70
80
1.3
320
1.0
750
0.8
20
1.0
40
0.8
170
1.6
375
0.8
Current Range (cont)
Coarse
Fine
Resolution (typ)
Voltage Compliance
Crossover Characteristics
Full Range
1% of Full Range
0.015% of Full Range
Full Voltage Range
Figure 6-6 (Section 6)
PERFORMANCE
Voltage Mode:
Regulation
1
0.01% or 2 mV
PARD (ripple)
50-60Hz input: 2
Hax. RHS, 10Hz-7HHz
(JJV)
Max. P-P, 0-25MHz (mV
grounded output)
Transient Response
(typ. recovery timeJJSec) 3
.
Output Impedance
Typical
Low Freq. (R & JwL):
R=(IJObms)
L=(JJHy)
Temp. Coefficient
1For
Figure 6-5 (Section 6)
0.01% +200 JJV/°C
a combined full line swing, and a NF-FL (no load-to-load) or,FL-NL change.
2With chassis tied to ground.
3For a step load change of NL-FL or FL-NL, recovery to ± lOmV band.
Table 1-3 Convectfon Cooled Unit Specifications (Sheet 3 of 6)
ALL
Drift (typical) 1
o.02S%
Remote Programming
Prgrm. Constant:
Res. (ohms/volt) 2
!5%
Volt.Gain (volt/volt) 3
Remote Sensing
Overload Protection
.....I
0>
Output voltage OverShoot
Current Mode:
Regulation, full
line and load (mA)
+
20-12
40-6
60-4
10-25
20-25
40-12
60-8
soo~v
250
250
250
200
250
250
250
1
IV/Load Lead
Crossover to Current
Mode
Hone
0.02CX + B,
where B=
.
4
1
1
4
4
4
1
3
0.5
0.5
10
10
1
1
PARD (ripple)
50-60Hz input:
Max. RMS 10Hz7HIIz (mA) Full Compliance (FC)
tror 8hrs after wa~up, @ constant line voltage, load and ambient temperature.
be varied.
3can be varied-signal source can be connected to negative output.
2 Can
~
(!)
<:
to:j
-
......
::1
q
0
Q.
t::
0
r+
.......
0
Table 1-3
Convection Cooled Unit Specifications (Sheet 4 of 6)
ALL
::1
Output Impedance
(typ)
Figure 6-5 (Section 6)
Temperature Coeff.
(/°C) (typ)
Drift (after 8hrs
warmup) (typ)
0.01% + c
Where C=
20-12
40-6
60-4
10-25
20-25
40-12
60-8
lmA
O.SmA
0.5mA
lmA
lmA
lmA
lmA
150±10%
250±10%
0.03% + 3mA
Remote Programming
Prgrm. Constant:
Res. (ohms/amp)
80±101
125±10%
0.08±101, 0 .150±10% 0.25±10% 0.02±101 0.02±101, 0.08±101. 0.125±101,
80±10%
Voltage (volts/amp)
Overload Protection
Output Current Overshoot
SPECIFICATIONS (MISC.)
40±10%
40±10%
Crossover to Voltage
Mode
None
Overvoltage Protection
Crowbar:
Response Time
(typ)l
1 10uSec
To Erated (typ) +6V,
50 IJSec
response can be achieved by removing C51, although nuisance tripping may result.
Table 1-3
Convection Cooled Unit Specifications (Sheet 5 of 6)
ALL
Crowbar (cont)
Temperature Coeff.
(typ)
......
I
......
0
0.05%/°C
Open Sensing
Protection
Yes
Reverse Voltage
Protection
Yes
Ambient Temperature
Range
0°C-71°C·
Derate Per
Characteristics
Figure 6-6 (Section 6)
Series Operation
(direct connection
or master-slave
Up to 200 Vdc
Output
Parallel Operation
(by current limiting feature or
master-slave)
Up to 3
Units
Cooling
Convection
Isolation Voltage
to Ground:
Input
Output
lOOOVdc
200Vdc
20-12
40-6
60-4
10-25
20-25
40-12
60-8
Table 1-3 Convection Cooled Unit Specifications (Sheet 6 of 6)
ALL
MECHANICAL DATA
Size in. (•):
Width
19(483)
Height
Depth
17-3/4(451)
Weifbt lbs.
kg)
AC Input Contions
Line Cord
20-25
40-12
60-8
20-12
40-6
60-4
10-25
3-15/32(88)
3-15/32(88)
3-15/32(88)
5-7/32(133) 5-7/32(133) 5-7/32(133) 5-7/32(133)
45(20.4)
44(20)
44(20)
64(29)
64(29)
64(29)
64(28)
Table 1-4 Fan Cooled Unit Specifications (Sheet l of 6)
10-50
ALL
INPUT RATINGS
Voltage Range
Frequency
Phase
Current (Adc Max)
@ llSVac
@210Vac
@230Vac
Power Factor (typical)
Efficiency (typ)
40-25
60-17
10-100
20-50
IOS-125V (Standard)
190-230V (Ml Option)
210-250V (M2 Option)
47-53/57-63Hz
40-50
60-35
...
...\.
...\.
ft
1
28
15.4
14
0.64
53.6%
H/A
25
23
0.66
62.5%
H/A
26
24
0.6
67.8%
7.3
0. 73
42.4%
11
11
0.675
59.71
0.685
61.71.
32.5
18.5
16.3
0.66
45.5%
0-10
0-40
o-6o
0-10
0-20
0-40
0-60
o-so
0-25
0-17
0-100
o-5o
o-so
0-35
14.7
8
22
12
22
12
OUTPUT RATINGS
Voltage Mode:
Voltage Range (Vdc)
Coarse
Fine
Resolution (typ)
Current Range (Ad c)
@55°C
@ 71°C
Current Mode:
Current Range:
Full Range
1% of Full Range
0.011 of Full Range
0-Io Max.
0-67% Io Max.
Same as in Voltage
Mode.
*105 - 125-volt input not provided.
190-230V (standard).
Table 1-4 Fan Cooled Unit Specifications (Sheet 2 of 6)
ALL
Current Range (coot)
Coarse
Fine
Resolution.(typ)
Voltage Compliance
Crossover Characteristics
10-50
40-25
60-17
10-100
20-50
40-50
60-35
300
500
500
300
500
700
700
25
40
25
20
40
40
40
10
0.5
80
180
1.6
5
0.3
20
1.6
40
0.8
85
Full Range
I% of Full Range
0.015% of Full Range
Full Voltag~ Range
Figure 6-6 (Section 6)
PERFORMANCE
Voltase Mode:
Regulation 1
The greater of 0.01%
or 2 mV
PARD (ripple)
·50-60Hz input: 2
Max. RMS, 10Hz-7HHz
{J.aV)
Max. P-P, 0-25MHz (mV,
grounded output)
Transient Response
(typ. recovery timeJ.1Sec) 3
Output Impedance
Typical
Low Freq. (R & JwL):
R=(J.10hms)
150 JJSec
Figure 6-5 (Section 6)
L=(IJHy)
Temp. Coefficient
1 For
1.2
0.011, +200 J.1V/°C
a combined full line· swing, and a NF-FL (no load-to-load) or FL-Nt change.
chassis tied to ground.
3 For a step load change of NL-FL or FL-NL, recovery to ± 10mV band.
2 With
1.6
Table 1-4
Fan Cooled Unit Specifications (Sheet 3 of 6)
ALL
Drift (typical) 1
10-50
40-25
60-17
10-100
20-50
40-50
200
250
250
200
250
250
4
4
4
6
4
4
4
20
10
3
35
10
10
10
60-35
0.025% + SOOIJV
Remote Programming
Prgrm. Constant:·
Res. (ohms/volt) 2
± 5%
Volt.Gain (volt/volt) 3
1
Remote Sensing
IV/Load Lead
Overload Protection
Crossover to Current
Mode
Output voltage OverShoot
250
None
Current Mode:
· Regulation, full
line and load (mA)
0.02% .f. B,
where B= :
PARD (ripple)
S0-60Hz input:
Max. RHS 10Hz7MHz (mA) Full Compliance (FC)
8hrs after warmup, @ constant line voltage, load and ambient temperature.
2can be varied.
3 Can be varied-signal source can be connected to negative output.
1 For
-
w·
'
1.0
0'\
Table 1-4 Fan Cooled Unit Specifications (Sheet 4 of 6)
ALL
Output Impedance
{typ)
Temperature Coeff.
(/°C) (typ)
Drift (for 8 hrs
after warmup) (typ)
10-50
40-25
60-17
10-100
20-50
40-50
60-35
lmA
lmA
lmA
2mA
lmA
lmA
lmA
3mA
3mA
3mA
lOmA
3mA
3mA
3mA
Figure 6-5 (Section 6)
0.01%
Where
0.031
where
+ c
C=
+D
D=
Remote Programmins
Prgrm. Constant:
10±101.
20±101
40±101
60±101
0.08±10% 0.02±10% 0.04±101. 0.0025
±lOt,
Res. (ohms/amp)
Voltage (volts/amp)
Overload Protection
Output Current Overshoot
SPECIFICATIONS (HISC.)
20±101
20±10'1
28±101
0.08±101 0 .. 008±101 0.015±101
Crossover to Voltage
Mode
Hone
Overvoltase Protection
Crowbar:
To Erated (typ) +6V,
Response Time
(typ)l
50 JJSec
1 10
JJSec response can be achieved by removing C51, although nuisance tripping may result.
~
q
0
0..
~
Table 1-4
!:::'
ALL
n
a.
0
Fan Cooled Unit Specifications (Sheet 5 of 6)
Crowbar (cont)
Temperature Coeff.
(typ)
O.OS%/°C
Open Sensing
Protection
Yes
Reverse Voltage
Protection
Yes
Ambient Temperature
Range
0°C-71°C
Derated Per
Characteristics
Figure 6-6 (Section 6)
Series Operation
(direct connection
or master-slave)
Up to 200 Vdc
Output
Parallel Operation
(by current limiting feature or
master-slave)
Up to 3
Units
Cooling
Fan
Isolation Voltage
to Ground:
Input
Output
lOOOVdc
200Vdc
10-50
40-25
60-17
10-100
20-50
40-50
60-35
Table 1-4 Fan Cooled Unit Specifications (Sheet 6 of 6)
ALL
20-50
40-50
10-50
40-25
60-17
10-100
60-35
5-7/32(133)
21 (533)
5-7/32(133)
21 (533)
5-7/32(133)
21 (533)
6-31/32(177) 6-31/32(177) 6-31/32(177) 6-31/32(177.
21 (533)
21 (533)
21 (53.3)
23 (584)
81 (36.74)
95 (43.1)
95 (43.1)
132 (59.8)
MECHANICAL DATA
Width
Height
Depth
Weigh.t lbs •
M
19(483)
128 (58)
120 (54.4)
120 (54.4)
SECTION 2
INSTALLATION
2.1
GENERAL
After unpacking, initial inspections and preliminary checkout procedures should be performed
to assure that the unit is in good working order. Basically these consist of visually checking for
damaged parts and components, and making an electrical check. Procedures are given in this
section to check the unit in voltage and current modes of operation. If it is determined that the
unit is damaged, the carrier should be notified immediately. The carrier claim agent will then
prepare a report of damage. The user is required to send this report to Sorensen 9250 Brown
Deer Road San Diego, CA 92121-2294. Sorensen will advise the user as to what action is
required to repair or replace the supply.
INITIAL INSPECTION
2. 2
Proceed as follows to inspect for damage incurred during shipment, prior to
applying ac power:
1.
Inspect panel and chassis for dents, paint chips and obvious signs
of -structural damage.
2.
For units with rear mounted fuseholder, assure that holder contains
a properly rated fuse.
Fuse ratings for both 115 and 220/230 Vdc
inputs appear above the holder.
3.
Turn front panel controls from stop to stop.
4.
Set POWER switch to ON and then OFF, then test OVERVOLTAGE switch
for proper mechanical action.
5.
Check for cracked or broken indicator lamp lens.
6.
Inspect for cracked meter windows. If pointer is off zero, reset using
adjust screw. (To minimize effects of static electricity causing deflection, touch meter window and chassis with fingers of one hand).
7.
Check input cord for physical damage. Tug lightly on cord near chassis to make certain relief grommet grips cord.
8.
Inspect terminal boards.
On TB2, links should be firmly connected
across terminals 1, 2, 3 and 4, 7 and 8, 9 and 10. Check that sensing
leads are properly connected between TB3-1 and TB2-5, and TB3-3
and TB2-6.
9.
Remove screws retaining top cover to chassis.
cuit board and components for damage.
Rotation should be smooth.
Inspect printed cir-
Unit mounting and installation dimensions are shown in figures 2-1, 2-2, and 2-3.
Installation
2-1
Rev B (3/84)
2.3
ELECTRICAL INSTALLATION
Sorensen's high power SRL models 40-50 and 60-35 are factory wired for 190-230
Vac inputs (order M2 for 210-250 Vac input). Other models of SRL power supplies
are factory wired to accept 105-125 Vac (standard model), 190-230 Vac (Ml model)
or 210-250 Vac (M2 model). Low power units are provided with a factory wired
power cord. This cord terminates externally in a three prong polarized plug
through the line cord, and therefore insertion of the plug into a compatible receptacle will automatically ground the unit. If a grounded input is not available,
use an adapter making sure that the external lead of the adapter is well ground·ed. For units not equipped with a line cord intact, connect 3 wire input leads to
terminals 1 2 (GRD) and 3 on input terminal board TB1 at the rear of the supply.
I
1
CAUTION
If chassis is not grounded, case will be at
approximately 55 . Vac due to RFI capacitors
connected between AC line and chassis. This
can produce an unpleasant (although not dangerous) electrical shock.
ELECTRICAL INSPECTION
2. 4
The following paragraphs describe the procedure for making an initial electrical
inspection. If specification verification is required, refer to section 5, Maintenance.
2.4.1
Voltage Mode
To check voltage mode operation
I
proceed as follows:
1.
Rotate COARSE CURRENT control and COARSE VOLTAGE controls fully
counterclockwise.
2.
Rotate FINE CURRENT control fully clockwise.
NOTE
Do not loosen or remove interconnecting links of
terminal boards.
3.
Insert power cord into a suitable receptacle, and set POWER switch
to ON.
4.
Slowly rotate the COARSE VOLT AGE control clockwise. Minimum range
should be from 0 to maximum rated output voltage (table 1-3 or 1-4).
5.
Set POWER switch to OFF.
Installation
2-2
Rev B (3/84)
2.4.2
Current Mode
To check current mode operation
I
proceed as follows:
.
1.
Rotate COARSE VOLT AGE control and COARSE CURRENT controls fully
counterclockwise.
2.
Turn FINE VOLT AGE control fully clockwise.
3.
Short output terminals using appropriate size wire.
(rear terminals only for units of 25 amperes and above).
4.
Set POWER switch to ON.
5.
Rotate COARSE CURRENT control slowly clockwise. The control range·
should be from "0" to the maximum rated output (table 1-3 or 1-4).
6.
Set POWER switch to OFF.
I
Installation
2-3
Rev B (3/84)
1---------&----------1
AEAA
OUTPUT CONNECTOOO.SAAE MADE
INPUT-1FT I! IMI~G COAOW·MOI.DED
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=;:1
~ J.o~-----•;;,s
_______ool
~·~~~._______.o
...L-..-;.;.rol....-
Model
Weight lbs (kg)
Net
SRL20-12
SAL 40-6
SAL 60-4
45 (20.4)
44 (20.0)
44 (20.0)
ALL DIMENSIONS ARE IN INCHES
~
Dwg No. £585325
Rev.Figure 2-1
Installation
SRL Outline Drawing 3 1/2" Panel Series
2-4
Rev B (3/84)
sj
11
-
WTPVT.I
0'
I
6.
iii
r-IEIFI03
a
I
i"'
~'I
--
·-
1
:L_______ I'
o
'Ill
\
UAitFIG.2
r?;
.-
-
0
~~
·=
_.::::
IXHAUIT
0
ourf'UT
($
FIG.3
\ . . - r -CTtOio&AN-TO
\ _ _ OUTI'UT-CTIONIIAN-TO
UUU<ATI_IIOoUI0_-3
t••»ID. HO ICMWS
POST LUG TERMINALS
USED ON OUTPUT
PORTION OF MODEL
.NO. SAL 10.80 ONLY
-;s ~----------.432r.:." ---------1
ACCEPTS NO. 12 TO NO. 10
smANDED WIAE
~------------~----------~
~----------·::------------~
POWEll OVEIIVOlTAGE
0
rnJ
ago
SET
BB
Model
Depth
Rear View
SAL 10·25
SAL 10·50
SAL20·25
SAL40.12
SAL40.25
SAL60·8
SAL60·17
16.2(409)
21 (533)
16.2(409)
16.2(409)
21 (533)
16.2(409)
21 (533)
Fig. 1
Fig.2
Fig.1
Fig.1
Fig.2
Fig.1
Fig.2
Weightlbs (kg)
Net
64(29)
81 (36)
64{29)
64{29)
95(43)
64{29)
95(43)
NOTES: ALL DIMENSIONS ARE IN INCHES
MM
Dwg NO. £585324
Rev. Figure 2-2
Installation
SRL Outline Drawing 5 1/4" Panel Series
2-5
Rev B (3/84)
:~----,-~
o--··--··--··-o
I
:
~~~
!.o
I
I
• I
I
1
•
I
I
l
.......
__ ,
I
I
FIG I
I
POST LUG TERMINALS
USED ON OUTPUT
PORTION OF MODEl
NO. SAL to-tOO DNLY
iD-----------·-0i
REAR
ACCEPTS NO. 6 TO NO. 4
STRANDED WIRE.
OUtfiUTCONHECTIQNSAAE MADE TOA
KULteA T!AIMNA&, BOAAO •103·3
•••o-»ID HO SCREWS!
1
·-------~----------'"1
~~----------------·~------------'"1
BB
n
6~fAr~6
fHEAMAl. OVEAVOLTAGE
0
og,o
COARSE
SET
FINE COARSE
FINE
RE MOYABI.EFE£T
Weight lbs (kg)
Model
Depth
Net
SAL 10-100
SAL20-50
SRL40-50
SRLS0-35
23
21
21
21
132 (60)
128 (58)
120 (54)
120 (54)
(584)
(533)
(533)
(533)
NOTES: ALL DIMENSIONS ARE IN INCHES
~
Figure 2-3
Installation
SRL Outline Drawing 7" Panel Series
2-6
Rev B (3/84)
SECTION 3
OPERATION
3.1
GENERAL
In this section, procedures required to convert an SRL unit to any of its various
operating configurations are presented, including local and .remote sensing, voltage and current mode programming, and series and parallel operation. Unit
controls and indicators have been illustrated and described in section 1.
3.2
VOLT AGE MODE OPERATION
3.2.1
Local Sensing
All models in the SRL series are shipped ready for use with local sensing, i.e. ,
sensing point is at the output terminals. If variations in load lead drops are
expected to be high relative to unit's specified regulation, remote sensing should
be used (paragraph ·3.2.2).
To operate unit in local sensing, proceed as follows:
1.
To set current limit value, short the unit output terminals. Set panel
CURRENT control to zero (fully counterclockwise). Set POWER switch
to ON, and use CURRENT control to adjust current limit value, not to
exceed 110% of rated current.
2.
Set POWER switch to OFF, remove short.
3.
Apply input power, and rotate COARSE and FINE VOLT AGE controls
to obtain desired output. Set POWER switch to OFF.
4.
Observing polarity, run load leads to either front or rear output ter.minals. At rear terminals, link should be fitted between binder screw
head and lead.
NOTE
Some models do not include front panel output
terminals.
5.
3.2.2
Set POWER switch to ON.
Remote Sensing
To adapt unit for remote sensing operation, follow procedures outlined in pa_ragraph 3. 2 .1. Before setting POWER switch to ON, remove wire sense leads between terminals TB3-1 and TB2-5 and TB3-3 and TB2-6. Then connect sensing
leads, observing polarity, to TB2-5 and TB2-6. Use coaxial cable or a twisted
pair of wires for sensing leads and make certain that the leads are firmly connected to unit terminals and load. Current in the sensing leads is below 100 mA.
In remote sensing, standard programming operation, transient response characteristics may degenerate slightly.
Operation
3-1
Rev B (3/84)
3.2.3
Remote Programming
In voltage mode, remote programming operation, unit output voltage is controlled
by external resistance or voltage signal commands. Either type may be used.
3 . 2. 3 .1
Resistance Programming
If the output voltage is to be controlled by resistance programming, calculate the
resistance required using the ratio of 200 ± 0.5 ohms per volt, that is for every
volt of output desired approximately 200 ohms. are required. In selecting a programming resistor, choose one with a low temperature coefficient (±20 ppm/°C)
and a wattage at least twice that calculated (programming current is normally 5
rnA).
Note that resistance programming may also be used to improve the unit drift characteristic. For example, if a fixed output is required, a fixed resistor may be
selected. This eliminates the variable contact resistance which is inherent in any
potentiometer and which contributes to the drift characteristic. If abrupt changes in output voltage are to be made by switching the programming resistance,
use a make-before-break switch.
To adapt unit to resistance programming, proceed as follows:
a.
b.
c.
d.
Short unit output terminals with current control set to zero (CCW). Set
POWER switch to ON. Use the CURRENT control to adjust current limit
value.
Set POWER switch to OFF, remove short.
Rotate VOLTAGE control~ fully counterclockwise.
Remove link between terminals TB2-3 and TB2-4, and connect programming resistor. Use twisted or shielded wire for leads.
NOTE
Operating the unit with open programming leads
or links may result in either low or high output
voltage.
With the programming resistor connected across
terminals TB2-3 and TB2-4, the VOLTAGE control remains in the circuit.
Rotation of this
control will alter the programmed voltage.
If
this is undesirable, connect the resistor across
terminals TB2-3 and TB2-6 to effect complete
bypass. If step changes in output voltage are
to be made by abrupt resistance alterations, use
make-before-break switching.
3.2.3.2
Changing of Programming Constant
If it becomes desirable to change the programming constant,
the value of R21
(programming constant resistor) may be determined as in the following example.
Operation
3-2
Rev B (3/84)
Example: To change the programming coefficient ( Pc) from 200 ohms per
volt to 1000 ohms per volt, calculate the new value of R21:
R21
= Vref
X Pc
where Vref is the voltage across Cl1 (approximately 9 volts).
The current through R21
R21
.
IS
thus;
=9
volts X 1000 ohms/volt = 9000 ohms
9 volts
then 9000 ohms = 1 milliampere.
As noted before, the programming resistor should have a low temperature
coefficient and a wattage rating at least twice that of the calculated rating.
To adapt unit to a different resistanc~ programming consta·nt, proceed as follows:
a.
Rotate VOLTAGE controls fully counterclockwise~
b.
Remove the link between TB2-1 and TB2-2. Install programming constant resistor R21 between TB2-1 and TB2-3 and adjust Vref until the
ratio of Vref/R21 is exactly 1 milliampere, or the calculated reference
current. This can be done by inserting a resistor in place of R53A
(between TB2-3 and TB2-6, with TB2-3 and TB2-4 open) equal to Eout
max/1mA and adjusting the voltage reference potentiometer R9 until
Eout is exactly equal to Eout max.
c.
Deterioration of the voltage regulation will occur as the programming
constant is increased, due to the effect of the offset current, and will
be proportional to the increase of R21. As an example, if the contribution due to offset current at 200 ohms per volt is 0.002%, at 1000
ohms per volt approximately 0.01% contribution to regulation might be
expected.
3. 2. 3. 3
Voltage Signal Programming
To adapt unit for voltage signal programming proceed as follows:
a.
Unity Gain (lV/V) (Figure 3-1)
Operation
1)
Remove the input power.
2)
3)
Remove the link between TB2-1 and TB2-2.
Remove the link between TB2-3 and TB2-4.
4)
Connect the signal programming source between TB2-3 and TB2-6
using a series resistor Ri as shown on Figure 3-1. Select Ri based
on the rated maximum voltage of the SRL and 200 ohms per volt
(e.g., 60V SRL units will use Ri of 12K). Use a precision 1/2
watt resistor such as the RL 20S type. Observe the proper polarity of signal source (negative) on TB2-6.
5)
With this modification, the SRL will produce a one volt output for
one volt of signal. Do not exceed the rated output voltage of the
SRL.
3-3
Rev C (12/84)
NOTE
The stability and regulation will be a function
of the signal source stability.
This source requires an output current rating of SmA de, with
its output floating (ungrounded).
0
TB2
R21
Vour
0
l~
Figure 3-1
Unity Gain
0
Figure 3-2
b.
Operation
+
TB2
Variable Gain
Variable Gain (Figure 3-2)
1)
Remove the link between TB2-1 and TB2-2.
2)
Remove the link between TB2-3 and TB2-4.
3-4
Rev C (12/84)
3)
Place Ri (1. 78K suggested) in series with the signal source and
connect as shown in Figure 3-2 between TB2-3 and TB2-5, observing the proper polarity.
4)
As with the previous method of programming, stability will be a
function of the signal source stability, its internal impedance, and
the stability of Ri and Rp.
In this mode of operation Vo = Vs Rp/Ri assuming the effects of amplifier offset
· and signal source impedance are negligible. Thus the gain is determined by the
ratio Rp/Ri.
It is suggested that Ri be made equal to 1. 78 kohm or less to
minimize the effect of offset voltage. Ri and Rp should be stable resistors (10
ppm/°C or less). Note that the front panel VOLTAGE control R53 may be substituted for Rp if TB2-3 and TB2-4 are linked.
3.3
CURRENT MODE OPERATION
To operate an SRL unit in the current mode, proceed as follows:
1.
Rotate all front panel controls fully counterclockwise.
2.
Short the output terminals.
3.
Rotate
4.
Turn COARSE and FINE CURRENT controls clockwise to select the
desired output current.
5.
Open POWER switch and remove short from output terminals.
6.
Set POWER switch to ON and adjust output voltage to desired compliance setting.
7.
Open POWER switch, and observing polarity, connect load to terminals
TB3-1 and TB3-3. Reapply input power.
FINE VOLTAGE control clockwise,
and close POWER· switch.
NOTE
If compliance voltage exceeds voltage control
setting, crossover to voltage mode operation
occurs automatically.
3.3.1
Remote Programming
In current mode remote programming operation the regulated output current may
he controlled externally by resistance changes or voltage signals.
I
3. 3. 1.1
I
Resistance
For resistance programmi.ng calculate the value of resistor required by using the
ohms/ampere coefficient listed in Table 3-1.
I
Operation
3-5
Rev C (12/84)
Table 3-1
SRL Hodel
Programming Constants (Current Mode)
Resistive
Ohms/Ampere (±10%)
Voltage
Millivolts/Ampere
10-25
30-12
20-25
40-6
40··12
60-4
60-8
40
80
40
150
80
250
125
20
80
20
150
80
250
125
10-50
10-100
20-50
40-25
40-50
60-17
60-35
20
10
20
40
20
60
28
8
2.5
8
20
8
40
15
(±10~)
Note: Use a resistor with a low temperature coefficient (±20 ppm/°C), and
a wattage rating at least twice that of the calculated value (normal
programming current is approximately 1 milliampere).
To adapt unit for current mode, resistance programming operation, proceed as
follows:
a.
Close POWER switch, adjust output voltage to desired compliance
setting.
b.
Open POWER switch and rotate CURRENT controls fully counterclockwise.
c.
Remove link between terminals TB2-7 and TB2-8, and replace with
programming resistor.
CAUTION
Operating unit with open programming leads or
links will result in high output current with
possible crossover to voltage mode.
If ·step
changes in output current are to be made by
abrupt resistance alterations, use make-beforebreak switching.
Operation
3-6
Rev B (3/84)
d.
Run load to terminals TB3-l and TB3-3, observing polarity.
e.
Set POWER switch to ON.
current to the load.
Unit supplies regulated programmed
NOTE
Any rotation of the CURRENT control alters the
output current. Dangerous output currents may
result.
The panel current knobs may be removed if desired.
3. 3 .1. 2
Voltage Signal
To adapt an SRL unit to voltage signal programming, connect the programming
device as shown in Figure 3-3 and follow the procedure listed below. This method
will alleviate the possibility of damage to the equipment by inadvertent application
of too high a programming voltage by presetting a current limit "threshold".
The external program power supply must have an OP-AMP output, capable of
sinking 1 rnA through CRl. External sense must be used as shown. Do not
ground either the positive or negative terminals of the program power supply.
See Unit Specifications Table 1-3 or 1-4, CURRENT MODE AMPS/AMP heading for
the program constant.
(The full scale voltage varies from 250 mV to lV depending on model.
NOTE
CR2 and CR3 are used to clamp the + program
terminal from exceeding negative 1.5 volts to
protect the SRL.
CAUTION
Do not program SRL current by direct connection between the program power supply and the
SRL. This will defeat the SRL power limiting.
circuit. (See Section 4, para. 4. 3).
CAUTION
Do not rotate the panel current adjust controls
from the OFF position since dangerous SRL output current may result when overloaded.
Operation
3-7
Rev B (3/84)
TB2
EXT
PROGRAM
SOURCE
RJ • 2K CERMET POT
CRJ,2,3 • IN4148
DIODE
PANEL POTS (CUR)
SET TO ZERO
0. IV
ATOTOirnt\
(SINK)
SRL
Figure 3-3
Current Programming by Voltage Signal
Procedure:
1.
2.
Set the front panel current controls (R18A and R18B) fully counterclockwise (OFF). The control knobs should be removed to prevent accidental use.
With the program power supply OFF and· the (+S) lead disconnected
from the program power supply short the SRL output terminals. Set
R1 trimmer at 50% rotation.
Turn the SRL ON. Adjust R1 trimmer for 110% of rated output current.
Turn ·the SRL OFF. Reconnect the (+S) lead to the program power
supply and turn it ON. Turn the SRL ON.
The external program power supply must have an op-amp output, capable of sinking 1 rnA through CR1. External sense must be used as
shown. Do not ground either ( +) or (-) terminal of external program
power supply.
See unit specification Table 1-2 "CURRENT MODE VOLTS/AMP" for
program constant. (The full scale voltage varies from 250 mV to 1V
depending on model).
Note that overvoltage from the program power supply will not exceed
the preset maximum lout (as set by Rl trimmer).
I
I
3.
4.
5.
6.
7.
3.4
SERIES OPERATION
For applications which require voltages higher than a single SRL model can provide, series operation may be utilized. The maximum rated output of any series
connected system is 200 Vdc. System regulation is the sum of the regulations for
all units. In SRL models, there is no need to connect reverse voltage rectifiers
across the output terminals. Reverse voltage protection has been designed in.
3.4.1
Local Sensing Figure 3-4 (a)
To connect units in series with local sensing, proceed as follows:
1.
Operation
Adjust the output voltage of each unit so that their sum is equal to
the desired system output. Set POWER switches of each unit to OFF.
3-8
Rev C (12/84)
2.
Disconnect links between terminals TB3-1 and TB2-5
TB2-6 of each unit.
3.
Reconnect load and sensing leads as shown in figure
4.
Set POWER switches to ON.
to the load.
3.4.2
I
and TB3-3 and
3-4~
(a).
The system supplies regulated voltage
Remote Sensing Figure 3-4 (b)
To connect units in series remote sensing remove leads from terminals TB2-5
and TB2-6. Observing polarity connect coaxial cable or a twisted pair of wires
from TB2-5 and TB2-6 across load as shown.
I
1
I
NOTE
Wherever possible, use twisted or shielded
leads.
At load and unit terminals, place sensing leads between binder screwhead and load
lead.
3.5
PARALLEL OPERATION
Parallel operation may be used to obtain currents greater than any single model
can supply. Up to three units may be connected in this manner. The maximum
rated output of any parallel connected system is the sum of the maximum outputs
of each unit, derated to 90%.
Operation
3-9
Rev B (3/84)
UNIT 1
+
TB2-6 ow------.
T83-3tO)II:r-----.
LOAD
T83-1
TB2- 5
~--o+-----~
UNIT 2
T82-6 o
TB3-3
01'-----------
(a)
Local Sensing - Series Operation
TBJ-){0+--------------------------~
TB2-5~--------------~----~
UNIT 1
TB 2-6
+
ow-----------
TBJ-3 Cot'----.
TWISTED
PAIR
T83-1
TB2-5
LOAD
Oi-----'
<>+-----~
UNIT 2
TB2-6 ~----------------------~
T83- 3
(b)
ot-----------------------------
Remote Sensing - Series Operation
Figure 3-4
Operation
Series Operation
3-10
Rev B {3/84)
r---1
I
lT0Br3--1------~
I
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I
I
I
I
I
I
I
I
I
TB3-1
r---,I
,..-----...o)-1
o
TB2-S
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I
TB2-31
LOAD
~r:t: I
I
T82-41
I
I
._ __ _
T82-61
83-3
t!)T82-9
~~------------I!JTB2-10
.
_J
SLAVE
(a) Local Sensing - Parallel Operation
LOAD
(b) Remote Sensing - Parallel Operation
Figure 3-5
Operation
Parallel Operation·
3-11
Rev B (3/84)
Local Sensing Figure 3-5 (a)
3.5.1
To connect additional units in parallel with local sensing, proceed as follows:
1.
Apply nominal input power to MASTER unit,· and adjust output to desired load voltage. Set POWER switch to OFF.
2.
Short master unit output terminals and apply input power.
Adjust
output current to Io/X, where Io is the total system output current,
and X is the number of units in the system. Set POWER switch to
OFF.
3.
At SLAVE units remove links from across terminals TB2-3 and TB2-4,
and TB2-9 and TB2-10. Connect a lead between TB2-10 terminals of
each unit.
4.
Observing polarity, run leads from the load to terminals TB3-1 and
TB3-3 on each unit, with (2) diodes connected as shown in (a) of
figure 3-5.
I
NOTE
Assure the diodes have a current capability at
least equal to its associated supply. Connect
anode to load in each case. A suitable heatsink
is required for each diode.
5.
3.5.2
On each unit open lead between terminals TB2-6 and TB3-;3, and
connect a lead from TB2-6 to the anode of the diode.
I
Remote Sensing Figure 3-5 (b)
For remote sensing remove existing leads from terminals TB2-5 and TB2-6. Observing polarity connect coaxial cable or twisted pair of wires from TB2-5 and
TB2-6 of master unit across load as shown.
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3.5.3
Overvoltage Protection (OVP)
A special circuit in the SRL series allows the operator to set the desired overvoltage trip point without disturbing the voltage output of the supply. This
feature enables the trip point to be set and verified even with the load connected. Proceed as follows:
1.
Depress the OVERVOLTAGE SET toggle switch on the front panel.
The panel voltmeter will then indicate the OVP trip voltage, instead of
the unit output voltage.
2.
Adjust the recessed overvoltage ADJ screw on the front panel until
the voltmeter indicates the desired trip voltage.
3.
Release the toggle switch.
Operation
3-12
Rev B (3/84)
Overvoltage indicator DS2 will illuminate when the OVP preset limit has been exceeded by power supply output, and remains on until the OVP circuit is reset.
Resetting is accomplished by placing the unit POWER switch to OFF momentarily.
To avoid nuisance tripping, it is recommended that the OVP trip point be set at
least 10% above the desired output voltage, but not less than 1 volt.
Operation
3-13
Rev B (3/84)
---------------- ------
-----------------------------------
SECTION 4
THEORY OF OPERATION
4.1
GENERAL
This section discusses the basic theory of series pass regulation , describes the
block functions of various circuits and then details the operation of each circuit.
If used as a supplement to the troubleshooting data provided in section 5, it will
aid in the isolation of unit faults. Schematic locations and reference designations
used throughout this section will be found in figure 6-2.
4.2
SCR PREREGULATED SERIES PASS PRINCIPLE
The SRL utilizes a combination of SCR preregulation and series pass principles
to regulate unit output. The series pass function utilizes a variable impedance to
absorb the difference between the filtered de .and the desired output voltage in
the voltage mode, and the compliance ·voltage in the current mode. The variable
impedance is provided by a number of transistor stages connected in parallel, all
of which react simultaneously to an output related control signal. Operation of
the transistors, which are called passing stages , is illustrated in Figure 4-1.
ABSORBED
VOLTAGE
INPUT VOLTAGE
.-
PASSING
STAGE
.
\ .....r_....,
_ -t---tl..- - - - - I
I
Figure 4-1
Theory of Operation
-
CONTROL
Series Pass Principle
4-1
Rev B (3/84)
For wide range power supplies such as those in the SRL series, the series pass
regulator becomes less practical at higher power output levels. This is due to
excessive voltage stored in the passing stage transistor at lower supply output
voltages. The method used to restrict the power dissipated in the passing stage
is preregulation, utilizing a pair of silicon-controlled rectifiers (SCR) whose outputs are controlled to maintain a constant de voltage across the passing stage.
(Paragraph 4. 3. 6 describes the operation of the preregulator circuit).
4.3
SRL POWER SUPPLY THEORY
NOTE
For this system level discussion refer to the
block diagram (Figure 4-2) and system schematic in section 6 (Figure 6-2).
Input power is applied through a phase controlled SCR circuit consisting of CR
15/16, which function as part of the system preregulator circuit, to input transformer Tl. The transformer output is then rectified and filtered through fullwave bridge rectifier CR18 and sent through the passing stage, consisting of Ql3
and associated components. It is then applied across the output through current
and voltage sensing elements.
This passing stage is the regulating device absorbing the difference between the
preregulated de and the desired or compliance voltages. In voltage regulating
operation, the voltage mode section Q7, QB, QlO senses the output voltage,
develops and amplifies error signal, and feeds this signal through a number of
drivers to the passing stages. In current regulating operation, the current mode
section (Q3 and QS) monitors the output current through a sensing resistor (R41)
and regulates the voltage developed across the resistor by applying control signals
to the drivers and consequently the passing stage. Unregulated supplies provide
reverse bias and collector supply voltages to the passing stages and forward bias
for the current mode differential amplifiers.
The voltage across the passing stage is sensed by a transistor (Ql8) through R66
in the preregulator circuitry, and compared to a reference voltage developed
across R62. Any differential voltage across the base emitter junction of Ql8 is
fed back as an error signal to the input SCR through preregulator amplifier (Q17),
pulse generating circuitry (Ql6) and pulse transformer T3.
An overvoltage amplifier (Q19, Q21-24) compares the output voltage to an adjustable reference, set by R85.
If this reference is exceeded, the amplifier
triggers a crowbar, (CRSO) which shorts the output of the unit. At the same
time, the unit control circuitry is shut off. The unit must be switched off to
remove this electronic short circuit.
4.3.1
Reference Supply
The precisely regulated voltage required for output comparison and error signal
development is provided by the following: a reference supply (unregulated supply
T2, CR1 and CR4), capacitor ( C6), an error bridge (RS, R9 and CRS), two
double differential amplifiers (Q2), and a low power passing stage (Ql). Resistor
Theory of Operation
4-2
Rev B (3/84)
~
!:T'
(1)
.,0
'<
0
1-+>
0
.,
't1
,-----
(1)
Ill
C'.
0
!:j
-·
""'1
1
tQ
I
J::
'"1
(1)
~
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N
liNE
VOLTAGE
PULSE
TRANSFORMER
PULSE
GENERATOR
PRE REGULATOR
INPUT
H
TRANSFORMER
~eR-VolrAGEPRoiEC'ii'ON
RECTIFICATION
AND
FILTERING
I '
rn
::tl
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1;'"4
rn
'<!
A
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w
couEcToR
suml
rn
t"t
RE~~!~E
(1)
3
-·
tp
SUPPlY
0
n
0
Q.l
tQ
s
::t'
(1)
<:
tp
w
.......
~
.....,.
"'
')',/.,.,.<1-.
/I
L__/
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1
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'II i
...1.••••
cM L .i1
_ _ .
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.J....
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'
'
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Ir
1
II - - J
A
11
11
II
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: :I
II1 I
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~
>1
1
I
---I
AUXILIARY
TRANSFORMER
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NEGATIVE
SUPPlY
REFERENCE
SUPPLY
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-
_
- I
VOL~OO.tJ
r---
J
_j
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_j
OOUTPUf
R2 is a starting resistor, i.e. , at turn on it shunts current across the passing
stage to allow the reference supply to start functioning.
In general, the supply operates as follows: The precise reference voltage developed by zener diode CRS is compared with a portion of the output voltage
developed across R9. The error signal which develops is amplified first by differential amplifier (Q2-l/2-2) and then by amplifier (Q2-3/2-4). The amplified
signal is then applied to the base of Ql, where it alters stage impedance and
therefore the absorbed volt!lge.
As a specific example of circuit operation, assume that, as a result of an imput
line change, supply output voltage starts to increase. The voltage across R9 will
then increase, and the base of Q2-2 will become more positive with respect to the
base of Q2-l. Q2-2 will then conduct more current and Q2-l less. (Note that
the sum of the currents through Q2-l and Q2-2 is held constant by the zener
voltage across R8). With an increase in current, the voltage developed across R7
increases, while that across R6 decreases. The base of Q2-4 will therefore become
more negative with respect to the base of Q2-3. As a result, Q2-4 will conduct
less current, and the drive on Ql will diminish. Q1 will increase its absorbed
val tage, thereby regulating the output to a precise 8. 9 volts.
4.3.2
Voltage Mode Section
The voltage mode section consists basically of two double differential amplifiers
(Ql0-1, Ql0-2, and Q7, Q8), a constant current generator (Ql0-3) and sensing
string (R21, R53A and B). The section functions to sense unit output voltage,
to detect differences between the desired and the actual output voltages, and to
convert and amplify these differences into error signals used to control the passing stage (Q13) impedance.
To clarify circuit operation, a specific example is given. Suppose that as a
result of a load change the output voltage begins to increase. The increase is
sensed across R53A and B, and Q16 base becomes more negative with respect to
the base of Ql0-2, which is connected to the positive sense terminal TB2-5.
Current through Ql0-1 decreases while that through Ql0-2 increases. (The sum
of the Q10 operating currents is fixed by constant current generator Q10-3, R37,
CR12 and 13). The decreasing current through R23 lowers its voltage while that
across R24 increases. As a result, the base of Q7 becomes less negative with
respect to the base of Q8, and the Q7's operating current decreases. This
operating current is then the signal current to the drivers and passing stages,
and any changes in it are reflected in changes in passing stage impedance and
consequently output voltage.
A constant current source consisting of Q3-3 and
R44 keeps Q7 operating in the high gain region. A decrease in signal current,
resulting from an increase in output voltage, increases passing stage impedance to
reduce the output to the desired voltage.
Transistor Q9, diode CRlO and resistor R24 form the down programming time circuit. Under normal operating conditions, Q9 is nonconducting due to insufficient
base emitter voltage. However, when a programming resistance or voltage signal
change is made to lower the output voltage, Q9 goes rapidly into conduction and
almost instantaneously shunts the signal current into the sensing string. As a
result, no signal is impresse-d on the drivers and the passing stage impedance
increases, absorbing more voltage.
Theory of Operation
4-4
Rev B (3/84)
As the bases of Ql6 and Q17 regain their equilibrium, Q9 reverts to its nonconducting state, and normal regulation at the programmed voltage takes place.
4.3.3
Power Limiting Circuit
In normal operation the passing stage voltage is kept constant by the preregulator. When the output is shorted. the voltage, and thus the power dissipated
by the passing stage will exceed the maximum limits until input capacitor C23
reaches its maximum value. Therefore a power limiting. or protective circuit consisting of Ql5. R49 aJJd associated components has been included to limit the current through the passing stage.
Transistor Q15 senses the voltage across R49, as the voltage across the passing
stage. In normal operation, the base/ emitter junction is reverse biased. and no
collector current flows. As the passing stage voltage increases, the base of Q15
becomes more positive with respect to the emitter and turns Ql5 on. The collector curreut then absorbs the current mode reference current from Q6. This
lowers the maximum currer1t capable of being delivered by the passing stage, thus
limiting the power dissipation.
4.3.4
Current Mode Section
The curreut mode section serves two functions. ln constant voltage operation, it
protects the load from excessive currents by limiting action and in constant current operation, it regulates the output current to the desired value. Main components include differential amplifiers R41, switch (Q3-3) and potentiometers
(Rl8A/B). Rl5 is a calibration resistor used to adjust amplifier Q5-1 and Q5-2
to the zero set point.
Basically, the current section functions as follows: the voltage across sensing
resistor R41, developed by the load current, is compared to a fixed reference.
This reference is derived from 8. 9 V regulated supply and the constant current
generator ( Ul, R 17 and Q6). Any error signal which develops is amplified first
by QS-1 and QS-2, and Q3-l and Q3-2, and then by Q3-1 and Q3-2. A constant
curre11t source composed of Q4, Rl2, CR6 and CR7 is used to increase the
collectol' impedance of Q3-2 and consequently the gair1 of this stage.
The
amplified sigmd is then applied to the base of switch Q3-3, which then functions
as a variable impedance to control the signal from the voltage· mode section to the
driver and passing stages. It should be noted that the signal from the voltage
mode section is at full strength and that. in voltage mode operation, Q3-3 is
saturated.
As a specific example of current mode operation, suppose that the load current
begins to drop below the setting of the output current adjust, R18A and B. The
voltage across R41 decre&ses, and the base of Q5-1 becomes negative with respect
to the base of QS-2. The operating current through Q5-1 increases and more
voltage builds up across R31. The base of Q3-1 becomes more positive with respect to the base of Q3-2. The voltage developed across RlO drops, and the drive
on Q3-3 increases. Q3-3 1 s impedance will decrease, and the signal current to the
drivers and passing stages will be greater. Consequently, passing stage impedance decrease~:>. and output current increases to the regulator setting.
Theory of Operation
4-5
Rev D (6/86)
4.3.5
Drivers and Passing Stages
Basic components in the drivers and passing stages include transistors Q11/14,
Q12 and Q13. Driver Q11/14 amplifies the signal produced by either the voltage or current mode sections and applies to it the bas·e of Q12 for further amplification.
The amplified signals are then applied to the passing stage bases
where they act to alter the stage impedance thereby controlling the output voltage or current. R40 assures equal current sharing among the passing stage.
I
I
I
Preregula tor
4.3.6
The preregulator section consists of the following:
reference transistor Q20,
amplifiers Q17 and Q18 pulse generator Q16 and transformer T3. The function
of the preregulator is to generate and control the firing pulses for the input
SCR, thus controlling the voltage appearing across the passing stage network.
I
I
The pulse regulator section consists primarily of reference transistor Q20 capacitor C39, and zener diode CR38. This circuit produces pulses at the secondary
of T3 which are synchronized to the zero crossing of the input sinewave voltage
of T2 (see Figure 6-7). CR38 maintains a constant voltage to operate the unijunction transistor Ql6. When the input sinewave voltage goes to zero at the end
of each half cycle, the zener voltage collapses toward zero. Unijunction Q16
fires and resets the voltage across C39 which then recharges through R60 to a
pedestal voltage established by the voltage at the collector of amplifier Q17.
1
1
Ql6 will fire when its firing potential", predetermined at approximately 50% of
the voltage across CR38, is reached by C39. A firing pulse is then produced
and transmitted to the SCR through T3. The time taken for C39 to charge to the
firing potential is controlled by the level of the pedestal voltage which is a
function of the collector current of Q17. The base of Q17 is driven by the error
signal of preregulator amplifier Ql8. Figure 6-7 depicts typical pulse forming
network waveforms as related to the rectified input waveform.
I
The preregulator amplifier section senses the voltage across the passing stage
and produces an error signal proportional to any increase or decrease in the
passing stage voltage.
This signal is such that if the voltage increases, the
current through Q17 increases lowering the pedestal voltage, causing the firing
angle of the primary SCR to be delayed, and in turn maintaining the passing
stage voltage relatively constant.
I
I
4.3.7
Overvoltage Protection
This circuit compares the output voltage with a preset reference voltage and
activates the electronic "crowbar" CRSO when this limit is exceeded. S2 on the
front panel (OVERVOLTAGE SET) provides for monitoring the reference tripping
voltage level.
·
The reference voltage is established by OVER VOLTAGE ADJ potentiometer R85 on
the front panel, and appears on the base of Q23, which is half of the Q22/Q23
differential comparator. The power supply output voltage is applied to the base
of Q22 whose output is applied to CRSO through SCR diode CR45. When CR45
fires due to an overvoltage condition it triggers the crowbar which clamps the
output voltage at zero. This activates the OVERVOLTAGE indicator DS2 on the
front panel and cuts off the input of the preregulator through Q19 and CR44
1
1
I
1
Theory of Operation
4-6
Rev B (3/84)
calling for maximum phase delay, thus reducing the de input voltage. Transistors
Q24/Q25 act as a turn-on circuit, which prevents the overvoltage circuitry from
triggering during unit turn-on/turn-off.
4.3.8
Reverse Bias Section
The reverse bias section functions during load off transients to improve response
time by rapidly cutting off the passing stages and to absorb the thermal effect
current generated by high junction temperatures. The section is comprised of an
unregulated supply and a number of biasing resistors.
A secondary of transformer T2, rectifiers CR22/CR23 and capacitor C2 form a
supply which feeds reverse bias through R45-48 to transistors Qll, Q12, an Q13.
4.3.9
Stabilization
A tendency toward instability under certain operating conditions is inherent in
the operation of any high gain feedback amplifier. To preclude unstable operation, SRL power supplies have been equipped with a number of stabilization
networks and capacitors. In the voltage mode section, these include networks
C30-R54, Cl5-R20 and capacitors Cl3, Cl6 and C43. The current mode section
includes network Cl2-R16, and capacitor C14. Network C9-R3 and capacitor C3
are used in the reference supply, and capacitors C24/C25 stabilize drivers Q12
and Qll/Ql4.
4.3.10
Power Section
In the power section, ac line voltage is applied to the primary of Tl through
input filter L11 and SCR's CR15/CR16. The input of the secondary is rectified
by a full wave bridge rectifier (CR18) and filtered by capacitor C23 before being
delivered to the passing stage input.
I
4.3.11
Thermal Overload Section
The thermal overload section consists of thermostat S3 resistor R95 diode CR57
and indicator DS3 which functions when unit temperature exceeds a predetermined
limit. When this limit is reached thermostat S3 closes and the v0ltage across R74
is sufficient to cut off the preregulators thus blocking the primary SCRs and removing the de input to the unit.
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4.3.12
Collector Supply
In order to limit the voltage across the passing stage, a separate bias supply provides collector bias voltages to the passing stage driver transistors Qll, Q12 and
Q14. This supply consists of secondary T2-15, -16 and -17 diodes CR27/CR28,
and capacitor C26.
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I
Theory of Operation
4-7
Rev B (3/84)
---------------- ------
-----------------------------------
SECTION 5
MAINTENANCE
5.1
GENERAL
This section provides periodic servtctng information, troubleshooting data, calibration,
procedures and performance testing procedures. The troubleshooting data should be used in
conjunction with both the schematic diagram, (Figure 6-2), which gives voltage check points,
and Section 4, which outlines the principles of operation. Figure 6-1 physically locates the
parts appearing on the schematic. Any questions pertaining to repair should be directed to
Sorensen Repair Department 1-800-458-4258. Include the model and serial numbers in any
correspondence. Should it be necessary to return a unit to the factory for repair, authorization
from the Repair Department must first be obtained.
5. 2
PERIODIC SERVICING
Units in the SRL Series should periodically be removed from service and cleaned.
Compressed air should be used to remove dust or other accumulations from around
chassis components. Naphtha or an equivalent solvent should be used on painted
surfaces. The front panel may be washed with a weak solution of soap and warm
water.
5. 3
TROUBLESHOOTING
Table 5-2 provides a list of malfunction symptoms along with a tabulation of the
possible cause or causes for each symptom. Note that the failure of one component may result in a "chain reaction" effect. For example, if one of the passing
stages (Q13) opens the remaining Q13 (where provided) may become overloaded
and subsequently fail. In a like manner, if a diode in one of the full wave rectifiers fails its complementary rectifier and the main transformer may be damaged.
I
I
The data listed in Table 5-2 are based on prototype reliability studies, not on
actual solutions to field problems, and therefore may be incomplete. ·Where the
probable cause for a symptom lists a transistor short, it is either a base collector emitter collector or base emitter collector short.
Base emitter shorts may
give an entirely different set of symptoms. It is therefore recommended that
before a particular section is checked ·for failures, each transistor within the
section be tested for base emitter shorts. (Typical base emitter voltage is approximately 0. 6 volt.)
I
5. 4
CALIBRATION
Following repair, the unit should be recalibrated to insure that replacement components have not appreciably altered performance characteristics. When calibrating follow the sequence outlined in the following paragraphs.
I
Maintenance
5-l
Rev B (3/84)
NOTE
If under full load, at high/low line inputs, the
de passing stage voltage (from C23 ( +) to
positive output terminal) is within ±10% of item
A, Table 5-1, further calibration of the unit
should not be necessary.
Pre-Test Inspection
5.4.1
Check that links are firmly in place across barriers on terminal board and leads
between sensing and output terminals are in place.
Preliminary Adjustments
5.4.2
1.
Preregulator
a.
On the printed circuit board, turn potentiometers R9 (reference
adjust), R15 (current mode zero adjust) and R63 (passing stage
voltage set) to midpoint in rotation range; turn R78 (preregulator
firing angle control) fully counterclockwise.
b.
On the front panel, turn VOLTAGE mode COARSE control (R53A),
FINE control (R53B), CURRENT mode COARSE control (R18A)
FINE control (Rl8B) and OVERVOLTAGE SET (R85) fully clockwise.
I
c.
Connect a voltmeter across Cll (reference supply output).
d.
With nominal* input voltage applied at 60 Hz and with no load applied
set POWER switch to ON.
Pilot light should illuminate.
I
e.
Adjust R9 to obtain 8. 9 V across Cll.
f.
Set POWER switch to OFF
g.
Connect a voltmeter from positive terminal of C23 to positive output
terminal, (hereafter referred to as passing stage voltage). Rotate
R78 clockwise. Connect an oscilloscope across terminals 4 and 5 of
transformer T3.
h.
Set POWER switch to ON.
Set input voltage to 125 or 230 Vac
(as applicable). Adjust R63 to obtain the passing stage voltage
specified in item A of Table 5-l. Adjust output voltage to rated
voltage (Item B, Table 5-l) and apply rated load current (Item C
Table 5-l).
I
disconnect voltmeter from Cll.
I
Decrease R78 so . that the output voltage decreases to approximately 50% of the
rated output. Observe waveform on the oscilloscope. It should be similar to that
in Figure 5-l. Gradually decrease the input line voltage with variable control
while also increasing the output voltage by means of R78. Continue this procedure until time "t" reaches a minimum of 0. 5 ± 0. 2 milliseconds. The output
voltage should now be equal to the rated output. Vary the input line voltage and
check that 11 t" is at a minimum null. If "t" is not at a minimum null readjust
I
Maintenance
5-2
Rev B (3/84)
R78 at the line voltage where "t" is at a minimum null. This line voltage should
be no higher than approximately 105 Vac (190 Vac for nominal 210 Vac input models). Check the waveform across T3 terminals 7 and 8. It should be similar to
that across terminals 4 and 5.
*Nominal:
115
I
210 or 230 Vac as applicable.
t
,...141------16 msec------l•aotl
Figure 5-1
T3 Scope Display
Set line voltage to 125 Vac (or 230 Vac for the 190-230 input models) and check
passing stage voltage Item A in Table 5-1. Set POWER switch to OFF. Apply
locking compound to R63 and R78. Remove oscilloscope from transformer T3 and
voltmeter from C23 (+) to positive output.
2.
Voltage Mode Calibration
a.
At the rear terminal board (mounted on the printed circuit board)
remove link between terminals 3 and 4 and connect a precision resistance exactly the value specified under Item D in Table 5-l.
Assure that the leads are firmly connected both at terminal board
and the resistance.
b.
Connect a digital voltmeter across rear output sense terminals.
c.
With nominal input voltage at 60 Hz applied to input, set POWER
switch to ON.
d.
Adjust R9 to obtain output voltage specified under Item B
5-l. Apply locking compound to R9.
Maintenance
5-3
1
Table
Rev B (3/84) ·
Table S-1, Difference Data
Item
20-12
40-6
60-4
10-25
20-25 .
40-12
60-8
A
(V de)
8.9±0.1
11. 4±0. 1
14.5±0.1
4.8±0.1
6.6±0.1
12.5±0.1
14.6±0.1
B
(V de)
20±0.07
40±0. 14
60±0.21
10±0.035
20±0.07
40±0. 14
60±0.21
c (A de)
12
6
4
25
25
12
8
D (ohms)
4000
8000
12,000
2000
4000
8000
12,000
E (rnA)
±10
±5
±5
±20
±20
±10
±5
Item
40-50
40-25
60-17
A (V de)
5.4±0.1
9.9±0.1
13.7±0.1
5.4±0.1
B (V de)
10±0.035
40±0. 14
60±0.21
c
50
25
D (ohms)
2000
E (mA)
±50
(A de)
3.
5. 5
40-50
60-35
7.0±0.1
8.5±0.1
13.4±0.±
10±0.035
20±0.07
40±0. 14
60±0.21
17
100
50
50
35
8000
12,000
2000
4000
8000
12,000
±25
±15
±100
±SO
±SO
±20
10-100
20-50
Current Mode Calibration
a.
Rotate COARSE and FINE CURRENT controls fully counterclockwise. Set POWER switch to OFF. Connect appropriate ammeter in
series with the load, to set output current to zero.
b.
Set POWER switch to ON, and adjust R15 to obtain current between zero and that specified under Item E, Table 5-l. Apply
locking compound to R15.
Set POWER switch to OFF. Remove
ammeter.
PERFORMANCE TEST
Sensitive instruments such as the SRL series require rigorous testing methods if
a true evaluation of performance is to be made. Wherever possible, twisted leads
should be used with test equipment to reduce stray pickup. At the power supply
terminal board, these leads must be firmly screwed to the terminals. Alligator
clips and similar types of connectors are not suitable. Note that the output specifications are applicable at rear terminals only. (Front panel binding posts may
introduce errors which,· although small, are sufficient to adversely influence measurements.) In addition, grounding techniques in which more than one device in
the test system is grounded (excluding AC inputs) may introduce ripple through
ground loops. Although unrelated to supply output, this ripple will be displayed
on the test oscilloscope .
Maintenance
5-4
Rev B (3/84)
Voltage Mode Regulation
5.5.1
To check voltage mode regulation, connect test system as shown in Figure 5-2.
For regulation testing, the oscilloscope and RMS voltmeter are not required. Use
a variable autotransformer for ac input, connect an ac voltmeter across transformer output terminals and proceed as follows:
1.
2.
3.
4.
5.
At no ·load adjust output to maximum rated voltage at nominal ac line
voltage and record de DVM reading.
Decrease ac input line voltage by 10%. Record de DVM reading. Increase ac input line voltage to 10\ above nominal and again record de
DVM reading.
With nominal ac input voltage applied, load the unit until the de ammeter indicates the 55°C rated output current. Record the de DVM
reading.
Decrease the ac line input by 10\ and record the de DVM reading.
Increase the ac line input to 10% above nominal and record the de DVM
reading.
The total deviation (maximum DVM reading minus the minimum DVM
reading) should not exceed the limits set in Table 1-3 or 1-4.
I
Voltage Mode PARD*
5.5.2
To check a periodic and random deviations in the voltage mode, connect a true
RMS voltmeter and oscilloscope across unit sense terminals as shown in Figure
5-2. RMS voltmeter should have a 7MHz bandwidth and bandwidth of oscilloscope
should be at least 25 MHz. Proceed as follows:
1.
2.
3.
4.
Apply nominal input voltage.
At no load adjust unit output voltage to maximum rated.
Apply load until de ammeter indicates rated output current at 55°C.
Observe oscilloscope and voltmeter. Maximum RMS and peak voltages
should not exceed the specifications as noted in Tables 1-3 and 1-4.
I
*Periodic deviation in output voltage from its average value.
5.5.3
Current Mode Regulation
This test consists of measuring the voltage drop deviation resulting from a full
line swing and a full load change across a shunt resistor. Set up test equipment
as shown in Figure 5-3. If possible select a precision (± 1%) shunt which will
provide a voltage drop of approximately 0.5 volt at unit maximum rated current.*
Also to reduce temperature coefficient effects, the shunt selected should be capable of dissipating twice the maximum power output attainable. The load must
be able to absorb the full compliance voltage. For regulation testing, the true
RMS voltmeter and oscilloscope are not required. Proceed as follows:
I
I
*A standard instrument style 100 mV shunt may be substituted.
Maintenance
5-5
Rev B (3/84)
1.
At no load and nominal ac line input voltage, rotate VOLTAGE controls
fully clockwise. Note the output indicated on the DVM. This must be
at least 1% above the rated maximum voltage.
2.
Set CURRENT controls to obtain the 55°C rated output current into a
short circuit (close load switch).
3.
Apply load until output drops to exactly the maximum rated compliance
voltage (equal to rated maximum output volts rating).
4.
Record DVM reading (use 4 places if possible).
5.
Repeat steps 1
6.
At nominal ac line input, close load shorting switch and record de DVM
reading.
7.
Repeat step 6 at ±10% nominal line voltage.
1
2, 3
I
and 4 at ±10% ac nominal line.
The total of the deviations obtained should be no greater than that specified in
Table 1-3 or 1-4.
NOTE
Convert shunt mV readings to mA by using the
shunt constant (i.e., using 100 mV, 25A shunt:
1 mV equals 250 mA).
Current Mode PARD
5.5.4
To check current mode periodic and random deviations, connect a true RMS voltmeter and an oscilloscope across shunt as shown in Figure S-3. The DVM is not
required. Proceed as follows:
1.
Set up for maximum compliance voltage per para. 5.5.3, steps 1, 2,
and 3.
2.
Set input ac line voltage to 10% above nominal.
3.
Observe RMS voltmeter and oscilloscope. Maximum allowable RMS current should not be greater than that specified in Table 1-3 or 1-4.
NOTE
Convert shunt mV readings to mA by using
the shunt constant (i.e., using 100 mV 25A
shunt: 1 mV equals 250 mA).
5.5.5
Drift
The drift in both voltage and current modes is measured using a strip chart recorder at constant load line and ambient temperature. Allow one half hour for
I
Maintenance
5-6
Rev B (3/84)
•fUC110NIC SWITCH POt
TIANStfNl IIWONs.t:
T~
UIIIT L1 :ll CORD
Figure 5-2 Voltage Mode Performance Test Setup
'"
0
0
Y~
AC ....... UI
Llll£ CORD
•
I .... I
Figure 5-3
Maintenance
Current Mode Performance Test Setup
5-7
Rev B (3/84)
voltage mode warmup and a full hour for current mode warmup.
tions are listed in Tables 1-3 and 1-4.
5.6
Drift specifica-
HI-POT TEST PROCEDURE
High potential test procedures have been carefully carried out at the factory.
These units are 100% tested and should not require further testing in the field.
High potential tests can overstress or destroy the power semiconductors in this
power supply if improperly applied.
Isolation measurements may be made using a standard VOM (Simpson 260 or equivalent) on the highest resistance scale available.
If it is essential to use the high potential test method, please contact the factory
for information on special precautions that should be taken.
CAUTION
Sorensen Company cannot be held liable for any
malfunctions resulting from the application of a
high potential test (greater than 100V).
See
standard Sorensen Company warranty.
Maintenance
5-8
Rev B (3/84)
Table 5-2
SYMPTOM
I
II
No Output,
Pilot light
does not glow
Low or No Output-Voltage
Mode
SRL Troubleshooting Chart
PROBABLE CAUSE
REMEDY
Internal Fuse (F2)
Replace F2
A. Overvoltage circuitry
1. Check that DS2 (OVERVOLTAGE)
B. No pre-regulator output
(no voltage across Q23).
2. If no pulse at T3, check signal across CR38 (Figure 6-1).
If
proper signal exists,
check for defective transistors Q16 or Ql7.
3. If CR38 signal is not correct
check CR38, CR35 or CR36.
Check for 4.7 volts across CR29.
If incorrect, check CR29 or R28.
Check for proper voltage across
Cll. If incorrect adjust using
R9. If no effect, defective Ql
or IC Q2.
C. 4.7-volt supply
D. 9-volt supply
Maintenance
on front panel is not illuminated
2. Set 52 to overvoltage set
position and read level on
meter. Adjust R85 (OV ADJ on
front panel) to its maximum
level. Switch unit off, and
on again after a few moments.
If problem does not disappear,
determine if output current
adjust (R18) functions properly. If so, check for CRSO
short. If R18 does not function, check for CR45 short,
or defective Q22-Q25.
1. Check for presence of firing
pulses at T3-4 and -5, or
T3-7 and -8 (See Figure 6-7).
If pulse is present, SCR CR
15, or 16 defective.
E. Current Mode section
Short Q3-3.
If output voltage
exists, check for defective QS,
Q3-1, Q3-2 or Q4.
F. Voltage Mode section
Short Q3-3. If no output voltage, check bias across CR11. If
forward-biased check Q7, Q8 and
check for shorted Q3-4. If reverse-biased, replace QlO and
check for shorted Q3-4.
5-9
Rev B (3/84)
Table 5-2
SYMPTOM
II Low or No Output, Voltage
Mode
(continued)
I II High Output,
Voltage Mode
SRL Troubleshooting Chart (Cont'd)
PROBABLE CAUSE
REMEDY
G. Drivers or Passing Stage
Check.for open Q11-Q14.
A. Reference supply
Output should be ripple-free at
8.9 Vdc. If adjustment with R9
is to no avail, check for shorted Q1, or defective Q2.
Short TB2-9 to TB2-5.
If no
change, check for shorted Q11Q14.
If problem disappears,
check for open Q3-4, Q8, or defective QlO or shorted Q7.
Check for presence of 4. 7 volts
across CR29.
1. Check for 2. 1 vel ts across
R17. If not, check Ul and Q6.
B. Drivers or Passing Stage
IV
Low Out_put,
Current Mode Section
2. Place short across Q3-3. If
no change, check for opne Q7.
3. Check for QlS leakage or
shorted or defective associated components.
4. Check for defective QS or Q3.
1. Same as IV-1. above.
2. Check for shorted Q3-3 or defective 05 or Q3.
V
High Output,
Current Mode
Current Mode Section
VI
Repeated
shutdown of
unit due to
themostat
operation.
Excessive voltage across
C23, due to:
A. Pre-regulator
B. Passing Stage
C. Fan Inoperative
Maintenance
5-10
CR15/CR16 SCR
Shorted components, Check QllQ14.
Check fan motor or restriction
of fan blade.
Rev B (3/84)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
SECTION 6
DRAWINGS AND PARTS LISTS
6.1
GENERAL
This section contains all the drawings referenced throughout the text. Included
are the system schematic diagram, a typical printed circuit board showing component layout, typical chassis assembly photographs with major components identified, and typical impedance and crossover characteristic curves .
This section also includes the replaceable parts lists. All parts are identified by
circuit symbol, keyed to the schematic diagram. Included are part descriptions,
and Sorensen part number. Values for components required with 210/230 volt
inputs (Ml/M2 options) are detailed.
6-1
C26
C21
'
•
,~J
H
''
''
I
'''.
''
0
1;:1
R41:
C>9
OFJII~1"'
;;!90
C5
C5
CR15
OOTTOM VIEW
TOP VIEW
UNITS 10-25, 20-25, 40-12(SHOWN)
UNITS 10-25, 20-25, 40-12(SH0WN)
Figure 6-l
Typical Chassis Assemblies
SRL Convection Cooled Units
C33
RJsa
RJ6A
C5
m
C2B
Rll6
C17
R9J
R115
BOTTOM VIEW
UNITS 20-12, 40-6. 60-8, 60-4(SHOWN)
TOP VIEW
UNITS 20-12, 40-6, 60-8, 60-4(SH0WN)
6-2
I
8
NOTES:
1.
2.
3.
4.
5.
D
6.
7.
I
7
I
6
--.-
5
UNLESS OTHERWISE SPECIFIED.
-
I
I
3
L
2
CR49 INSERTED .AND INDICATED l.fAD I" USED ONLY ON 60-8.
C36 AND R97 OMITTED ON 20-12, 40-6 AND 60-4.
C27 AND R35 NOT USED IN 40-6, 60-4 AND 60-8.
C53 USED ONLY ON 20-12, 40-6 AND 60-4.
C55 AND R101 USED ONLY ON 20-25.
CR59 AND R102 USED ONLY ON 60-4 AND 60-B.
C19 RELOCATED TO DOTTED POsmoN ON MODEL 20-25.
R1 05 MAY BE OMITTED IN SOME UNITS, AS DETERMINED BY TEST UMITS
C57 AND R1 03 USED ONLY ON MODELS 20-25 AND 60-8.
R79 IN 9 SHORT ON 10-25 AND 20-12.
9.
10.
11.
12.
13.
R3BA AND B INSERTED ONLY ON MODELS 40-6 AND 60-4.
CR1BC AND D NOT USED ON 1D-25, AND INDICATED LEAD IS WIRED TO Tl-B.
C21 RELOCATED TO DOTTED POSmON EXCEPT MODELS 20-12, 40-6 AND 60-4.
C60 USED ONLY ON MODELS 40-12, 60-8, 40-6 AND 60-4.
BIOS SUPPLY CR27, CR2B AND C26 NOT USED ON 20-12, 40-6, 40-12, 60-4 AND 60-6
IN WHICH CASE REFERENCED DOTTED CONNECTION IS USED.
R39 INSERTED ONLY ON 20-12 AND 40-12.
Q11 AND R45 NOT USED ON 40-6, 40-12, 60-4, 60-B (ADD CONNECTION BETWEEN QHE AND Jl-4).
4
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Table 6-1
Replaceable Parts List
Main Assembly
SRL Convention Cooled Units
SRLModel
CIRCUIT
SYMBOL
IA'JX~«~tXK~/b
DESCRIPTION
SORENSEN PART
NUMBER
Capacitors (uF unless noted)
C1
C2
C3
C4
C5
C17
C18
C19
C20
C21
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C23
X
X
X
X
X
6,500, 75V (2 Required)
9,600, 15V
24-2593-1
24-2454-8
Not Used
0.05, 600V
0.05, 600V
Not Used
24-2010
24-2010
X
C28
C29
X
C31
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C8
X
X
C33
C36
X
X
X
X
X
X
C37
C42
C50
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Circuit Breaker, 10A, 250V
Not Used
Circuit Breaker, 18A, 250V
X
X
X
X
X
X
X
X
X
X
X
C55
X
X
C54
X
X
C60
X
X
CB1"*
X
X
X
X
X
X
X
X
X
X
X
X
X
X
4,700, 50V
1,000, 25V
3,500,20V
1,100, 40V
1,500, 40V
1,000, 75V
1,500, 75V
0.05, 600V
0.33, 250V
Not Used
0.33, 250V
0.1, 250V
0.15,400V
0.1,400V
0.047,400V
Not Used
0.0015, 200V
Not Used
0.68, 200V
Not Used
4,150V
Not Used
0.01, 200V
X
X
X
C53
166374-7
24-369
587626-65
587626-65
24-2409-16
587626-69
24-2459-1
24-2453-1
1063985-3
24-2460-4
24-2594-1
24-2444-6
24-2582-2
24-1034-4
826-103-75
24-2593-1
X
X
6,800, 20V
1,500, 40V
1,000, 50V
1,000,40V
69,000, 15V (4 Required)
20,000, 30V (2 Required)
21,000, 40V (5 Required)
14,000, 75V
166374-7
10,000, 75V (3 Required)
6,500, 75V
X
C26
Not Used
0.1, 600V
Not Used
0.1, 600V
2,300VAC
0.1, 250V
0.1, 250V
0.33, 200V
0.47, 250V
586047-2
24-2452-4
24-2455-3
24-2453-4
24-2453-1
24-2557-5
24-2557-4
24-2010
587626-68
587626-68
587626-65
24-2411-14
24-2411-13
24-2411-11
24-2409-2
24-2409-18
24-2288-1
24-2409-7
92-377
92-378
.tlliHfn
CR14
CR15**
X
X
X
X
X
X
CR16"*
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
S11
C230CX7
C220CX245
C230CX7
C220CX245
587565-1
26-178-5
26-1158-5
26-178-5
26-1158-5
• Includes all components not on PCB.
**115V input only. For 210/230 volt, see page 6-21
6-4
RevT (7/99)
Table 6-1 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Convection Cooled Units
SRL Model
CIRCUI
SYMBOL
CR17
CR18A
IM(tk~//
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CR188
X
X
X
X
X
CR18C
X
X
X
X
X
CR180
X
X
X
X
X
CR22
X
CR23
X
CR27
X
CR28
X
X
X
X
X
CR35
CR36
CR49
X
X
X
CR50
X
X
X
X
X
X
X
X
X
X
X iX
X
X
X
i
X
X
CR32
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
l
X
X
X
X
X
X
X
X
X
X
DSl
DS2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DESCRIPTION
SORENSEN
PART NUMBER
Q!.2!!!!. (cont 1 d)
Sll
1Nll84A
1Nl202A
1Nl186A
1Nll84A
1Nl202A
1Nll86A
Not Used
1Nll84A
1Nl202A
1Nl186A
Not Used
1Nl184A
1Nl202A
1Nl186A
Not Used
Sll
Not Used
Sll
3Sll
Not Used
3Sll
Not Used
1Nll84A
1N1200A
S16
S16
Not Used
1N1200A
C230UX7
C230FX7
C230AX7
587565-1
587382-2
587393-2
587382-3
587382-2
587393-2
587382-3
Indicator light
Indicator light
43-357
43-358
587382-2
587393-2
587382-3
587382-2
587393-2
587382-3
587565-1
587565-1
587566-1
587566-1
587382-2
587393-1
587565-4
587565-4
587393-1
26-178-1
26-178-2
26-178-3
Fuses
Fl*
XF1
F2*
X
X
X
X
X
X
X
X
X
X
Not Used
lOA, 250V
Fuseholder
l.SA, 250V
l.OA, 250V
Fuseholder
42-1809
42-459
226-7176P41
226-7176P39
343-1011P2
X
RFI Choke
RFI Chol:e
127-1844
127-1849
X
X
X
X
XF2
X
X
X
Ll
X
X
X
X
X
X
X
X
X
X
X
X
X
Meters
Ml
X
X
X
X
X
X
M2
X
X
X
X
X
X
I
X
X
*115V 1nput only.
Voltmeter, D-12V
Voltmeter, 0-25V
Voltmeter, o-sov
Voltmeter, 0-BOV
Anmeter, 0-30A
Anmeter, 0-lSA
Anlneter 0-BA
Anllleter. 0-5A
Anllleter. 0-lOA
For 210/230V input, see page 6-21.
6-5
94-579-1
94-579-2
94-579-3
94-579-4
94-462-6
94-462-4
94-462-2
94-462-1
94-462-3
Table 6-1 (Cont'd}
Replaceable Parts List
Main Assembly
SRL Convection Cooled Units
SRLModel
CIRCUIT
SYMBOL
Q12
A'KK~~K«~
///
X
X
X
X
X
X
Q13A-D
X
X
X
X
X
X
X
X
' DESCRIPTION
SORENSEN
PART NUMBER
Transistors
2N3055A
40312 (Selected)
40313
2N3771 (3 Required)
2N3055 (2 Required)
2N3055 (4 Required)
2N3055 (Selected - 2 Req'd)
2N3055 (Selected - 3 Req'd)
2N3442 (2 Required)
2N3442 (3 Required)
18-151
18-142
18-164
18-202
18-151
18-151
18-151
18-151
18-163
18-163
Resistors (ohms, 1/2W, +/-10%
unless noted)
R18A
R18B
R38AIB
R39
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R404A-D
X
X
X
X
X
X
X
R41
X
X
X
X
X
X
X
R42
X
X
X
X
X
X
X
R47
X
X
X
X
X
X
R48
X
X
X
X
X
X
R53A
X
X
X
X
X
X
R53B
X
X
X
X
1.2K, 2W, Variable
10, 2W, Variable
Not Used
1,20W
Not Used
0.15, 30W
0.1, 25W
0.1, 12.5W (3 Required)
0.18, 12.5W (2 Required)
0.18, 12.5W (4 Required)
0.27, 5W (2 Required)
0.18, 7W (3 Required)
0.39, 5W, 5% (2 Required)
0.39, 5W, 5% (3 Required)
0.02
0.08
0.15
0.08
0.25
0.125
15, 25W
50,25W
25,50W
150, 25W
75,50W
400, 25W
200,50W
270, 1W
470,2W
220, 1W
680,2W
680,1W
390,2W
5,20W
25,20W
4,25W
50, 10W
75,5W
35,10W
2K, 2W, Var., +20, -0%
4K, 2W, Var., +20, -0%
8K, 2W, Var., +20, -0%
25K,2W
20, 2W, Variable
40, 2W, Variable
6-6
29-596
29-595
27-655
27-1535
27-775
27-590-1
27-590-1
27-590-1
586054-6
167402-39
167402-38
167402-38
190-4125-1
190-4143
190-4145
190-4125-2
190-4142
190-4125-3
27-744
27-708
27-809
27-767
27-842
27-717
27-843
280-1180P53
280-1147P62
280-1180P50
280-1147P68
280-1180P68
280-1147P59
27-656
27-610
27-747
27-599-3
27-452
27-563
29-587
29-588
29-589
819-253-34
29-591
29-592
Table 6-1 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Convection Cooled Units
SRL Model
CIRCUI
SYMBOL
~~
R53B
R55
X
X
X
X
X
X
X
X
X
X
R57
R77
R85
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R90
R91
X
X
X
X
X
X
X
X
R93
R94
X
R97
X
X
X
X
X
X
X
X
X
X
X
X
X
R98
R101
X
X
R103
X
X
R105
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SORENSEN
PART NUMBER
DESCRIPTION
Resistors (ohms, l/2W, tlO%
unless noted)
80, 2W, Variable
120, 2W, Variable
0.055
0.4
0.44
0.24
3K, 7W
12.1K, lS
24.9K, 11
49.9K, lS
80.6K, lS
3K, 2W, Variable
4K, 2W, Variable
SK, 2W, Variable
. 12K, 2W, Variable
47
0.24, 2W
1, 2W
330
330
Not Used
10
Not Used
10
Not Used
1
Not Used
1.8K
llK, 1/SW, lS
7. 87K, 1/SW, 1S
5.62K, 1/BW, 11
29-593
29-594
190-4126
190-4144
190-4127
190-4164
27-471-9
28-1408
28-1261
28-1409
28-1351
29-597
29-598
29-599
29-600
280-1145P26
28-1252
28-1253
280-1145P56
280-1145P56
28Q-1145P2
280-1145P2
27-1157
280-1145P83
586250-124
586250-117
586250-110
Switches
Sl
S2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Not Used
Power
Voltage/OVP Set Selector
45-169
45-168
Transfonners
Tl
Rect. Input
X
X
X
X
X
X
T2
X
X
X
X
X
T3
X
X
X
X
X
X
X
II
It
II
II
II
II
II
M
II
126-3140
126-3124
126-3139
126-3125
126-3138-1
126-3126
126-3138-2
126-3141
126-3121
126-3142
126-3123
II
"
Control
II
X
X
M
X
II
Pulse
Mi see 11 aneous
X
X
X
X
X
X
X
X
Control Knob (4 Required)
Printed-Circuit
Board Ass'y
.
II
X
X
"
6-7
..
.
M
II
II
42-274
190-4118-1
190-4118-4
190-4118-5
Table 6-1 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Convection Cooled Units
SRL Model
CIRCUI
SYMBOL
:H/W~
••
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Foot. Rubber (4 Required)
Schematic Diagram
Front
Panel
Components)
II
.
.. (No
II
X
X
X
E2
E3
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
II
Cover. Top
Cover. Bottom
Case
Side, Left
H
II
X
X
X
X
"
"
Handle (2 Required)
X
X
X
X
"
u
X
X
E1
II
"
X
X
t1
N
Case
Side,
n
.. Right
X
X
"
"
n
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Mi see 11 aneous
Printed-Circuit Board Ass'y
X
X
X
X
SORENSEN
PART NUMBER
DESCRIPTION
. .
"
"
II
II
II
.."
II
II
"
"
"
"
"
.. .."
II
n
"
"
II
Binding Post, Black
"
"
"
"
" • Red
190-4118-7
190-4118-8
190-4118-11
190-4118-12
73-3200
73-3200
73-3270
73-3199
73-3271
73-3199
91-1245
30-784
91-214
586245
73-3275-1
73-3201-1
73-3275-2
73-3201-2
73-3275-3
73-3201-3
73-3275-4
4-951
4-951
4-950
SRL M1 (210V} and M2 (230V)
(Substitute the following components)
CBl
X
X
CRlS/16
Fl
F2
.
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Circuit Breaker,
6A, 250V
.
• lOA, 2SOV
"
92-379
92-380
Control Rect.
26-1158-7
26-178-7
"
"
Fuse.
2SOV
. • SA,
lA, 250V
• l/2A, 2SOV
226-7176P57
226-7176P30
226-7176P36
Front Panel (Special)
73-3340-1
73-3340-2
73-3340-3
73-3340-4
.
"
II
II
II
II
II
II
II
II
6-8
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Table 6-2
Replaceable Parts List
PCB Assembly
SRL Convection Cooled Units
SRL Model
C(RCU(
SYMBOL
C6
C7
CB
C9
ClO
Cll
C12
C13
Cl4
C15
C16
C21
~~~
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
::
X
C22
C24
X
X
C25
X
C27
X
CJO
X
I.
X
X
X
X
X
a
X
X
X
X
X
a 'S
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C32
C38
C39
C40
C41
C43
C44
C45
C46
C47
C48
C49
CS1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DESCRIPTION
Capacitors
(~F
SORENSEN
PART NUMBER
unless noted)
1,000, 15V
1,000, 15V
0.015, Z50V
0.033, 250V
20, 12V
25, 75V
0.1. 250V
0.01. 250V
0.0022, 200V
0.068, 250V
0.068, 250V
0.01. 250V
6,800. 20V
1,500, 40Y
800, 40V
22, 35V
0.047, 2SOV
0.01, 250Y
o.oo1. 1oov
0.001. 200V
0.0033. 200Y
0.01, 2SOV
Not Used
0.01, 2SOV
0.0022, 200V
0.015, 200V
0.0015, 200V
0.001, 200V
o.o1. 2oov
4,25V
100. 25V
0.1, 2SOV
1.8. 250V
Not Used
0.001, 200V
0. 0022. 200V
10, 200V
0.01, 250Y
0.1, 2SOV
0.1, 2SOV
Not Used
0.047, 2SOV
24-2554-4
24-2554-4
24-2015-3
24-2015-7
235-7404P31
235-7404Pll
24-2015-13
24-2015-1
24-2409-3
24-2015-11
24-2015-11
24-2015-1
24-2459-1
24-2453-1
24-2453-3
5RM5ft-2:l
24-2015-9
24-2015-1
235-735SP266
24-2409-1
24-2409-4
24-2015-1
24-2015-1
24-2409-3
24-2015-3
24-2409-2
24-2409-1
24-2409-7
235-7404P35
237-7404P8
24-2015-13
24-2015-28
24-2409-1
24-2409-3
24-2496
24-2015-1
24-2015-13
24-2015-13
24-2015-9
~
CRl
CR2
CR3
CR4
CRS
CR6
CR7
CR8
CR9
CR10
CRll
CR12
CR13
CR19A/Il
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
S11
Sll
S11
S11
1N825, Zener, 6.2V
RD5637
R05637
RD5637
Not Used
RD5637
RD5637
R05637
R05637
Sll
6-10
587565-1
587565-1
587565-1
587565-1
588105-3
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
587565-1
Table 6-2 (Cont'd)
Replaceable Parta List
PCB Assembly
SRL Convection Cooled Units
SRL Model
CIRCUI
SYMBOL
~~
DESCRIPTION
SORENSEN
PART NUMBER
~
CR24
CR25
CR26
X
X
X
X
X
CR29
CR30
CR31
CR33
CR34
CR37
CR38
CR39
CR40
CR41
CR4?
CR43
CR44
CR45
CR46
CR47
CR48
CR51
CR52
CR53
CR54
CRSS
CR56
CRSB
CR59
CR60
CR63
CR65
CR66
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Ql
Q2
Q3
Q4
QS
Q6
Q7
QS
Q9
QlO
Qll
Ql4
Q15
Ql6
Ql7
Ql8
Q19
Q20
Q21
Q22
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
S16
RD5637
1N4720
Sll
1N750, Zener, 4.7V
RD5637
RD5637
RD5637
RD5637
RD5637
1N4747A. Zener
RD5637
RD5637
1N5226B. Zener, 3.3V
RD5637
R05637
RD5637
C106A21
RD5637
1NS2268, Zener, 3.3V
RDS637
RD5637
R05637
RD5637
R05637
R05637
R05637
RD5637
R05637
R05637
RD5637
SS2996
RD5637
Transistors
587565-4
26-1017
26-1006-2
587565-1
26-211
26-1017
26-1017
26-1017
26-1017
26-1017
588102-13
26-1017
26-1017
588101-3
26-1017
26-1017
26-1017
26-1105
26-1017
588101-3
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
587306-4
26-1017
RT9338
CA3046 tiC, Transistor Array)
CA3046 IC, Transistor Array)
2N3638
Dual SA1448
2N2907A
2N3638
2N3638
2N697
2113019
40321
CA3053 (IC, Diff. Amp)
40312
2N697
2113019
40321
2N3641
2N1671A
2N3641
2N3638
2N3638
2N3641
2N5415
2N3638
18-146
18-605
18-605
18-143
18-176
386-7249P58
18-143
18-143
18-115
386-7316Pl
18-165
18-606
18-142
18-115
336-7316Pl
18-165
18-144
18-097
18-144
18-143
18-143
18-144
18-216
18-143
6-11
Rev D (6/86)
Table 6-2 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Convention Cooled Units
SRLModel
CIRCUIT
SYMBOL
Q23
~~J(~ft~A':Y/ / /
X
Q24
X
Q25
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DESCRIPTION
SORENSEN PART
NUMBER
Transistors
2N3638
62940
2N3638
62940
2N5307
18-143
587062-1
18-143
587062-1
18-214
Resistors (ohms, 1/2W, +/-10%
unless noted)
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
220
390, 1W
10
X
X
X
X
X
X
X
6llD
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
357, 1/8W, 1%
1K
1K
1.2K
2K, 2W, Variable
47K
1.5K
2.2K
820
3.3K
50, 2W, 20%, Variable
47
4.32K, 1/8W, 1%
2.15K, 1/8W, 1%
330
390
1.78K, 1%
3.6K, 1/4W, 2%
560, 1W
2.2K
2.2K
2.05K, 1/8W, 1%
560
3.9K
330, 1W
604K, 1%
316K, 1%
1.21M, 1%
332K, 1%
634K, 1%
1
2.7K
2.7K
6.49K, 1/8W, 1%
560, 1W
22K
Not Used
5.6K, 5%
220
2.2K
1.2K
2.2K
Not Used
1.2K
2.2K, 1W
18K
X
X
X
X
X
R19
R20
R21
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R22
R23
R24
R25
R26
R27
R28
R29
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R30
R31
R32
R33
R34
R35
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R36
R37
R44
R45
X
X
X
X
X
R46
X
X
X
R49
X
X
X
33K
47K
6-12
280-1145P50
280-1180P59
280-1145P2
280-1145P68
28-1285
280-1145P74
280-1145P74
280-1145Pn
29-519
280-1145P134
280·1145P80
280-1145P86
280-1145P71
280-1145P91
29-467
280-1145P26
586055-190
28-1415
280-1145P56
280·1145P59
28-1373
819-253-34
280-1180P65
280-1145P86
280-1145P86
586055-89
280·1145P65
280-1145P95
280·1180P56
28-1267
28-1397
28-1358
28-1357
28-1398
27-983
280-1145P89
280-1145P89
586055-113
280-1180P65
280·1145P122
280·1145P1 00
280-1145P50
280-1145P86
280-114sPn
280-1145P86
280-1145Pn
280-1180P86
280-1145P119
280-1145P128
280-1145P134
Table 6-2 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Convection Cooled Units
SRL Model
CIRCUI
SYMBOL
RSO
R51
R52
l4##~
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R64
R65
X
X
R66
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R68
R69
R70
R71
R72
R73
R74
R75
R76
R78
R79
R80
R81
R82
R84
R86
R87
R88
R89
X
X
X
X
R63
X
X
X
X
X
X
X
X
X
.X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R92
X
R96
R99
Rl02
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
.x
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SORENSEN
PART HUMBER
Resistors (ohms, 1/2W, ±lOS
unless noted)
2.2K
12K
lOK
4.7K
47
390
lSOK
3.91C
3.3K
330
680
820
lK
1K, 2W, Variable
400, 2W, Variable
6.8K
4.7K
12K
22K
33K
5.6K
lOK
18K
27K
3.3K
220
10K
30K, 2W
820K
237, 1/4W. 1%
4.7K
27K, 2W
120K
SK, 2W, Variable
2.7K
1.2K
470
4.7K
470
lK
1.0 Meg, 1/4W, 1S
3.3 Meg
27K
22K
18K
lSK
150
100
lOK, l/4W, u;
470K
Hot Used
12K
X
X
R54
R58
R59
R60
R61
R62
DESCRIPTION
280-1145P86
280-1145Pll3
280-1145Pll0
28D-1145P98
280-1145P26
280-1145P59
28D-1145Pl52
280-1145P95
280-1145P91
28D-1145P56
280-1145P68
280-1145P71
280-1145P74
29-503
29-547
280-1145P104
280-1145P98
28D-1145P113
28D-1145Pl22
280-1145Pl28
280-1145P100
280-1145Pl10
280-1145Pll9
280-1-145P125
28D-ll45P91
280-1145P50
28D-ll45Pl10
585109-56
280-1145P179
28-1418
280-1145P98
585109-55
280-1145Pl49
29-426
280-11~5P89
280-1145P77
280-1145P62
280-1145P98
28D-1145P62
280·1145P74
28-1418
280-1145P200
28D-114SP125
28D-1145Pl22
280-1145Pl19
280-1145P116
280-1145P44
280-1145P38
28-1325
280-114SP170
280-1145Pll3
TB2
X
X
X
X
X
X
X
Tenninal Board
90-3837
Ul
X
X
X
X
X
X
X
LM741CH
585322-1
6-13
Table 6-2 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Convection Cooled Units
SRL Model
CIRCUI
SYMBOL
XQ2
XQ3
[/(~~~
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SORENSEN
PART NUMBER
DESCRIPTION
Miscellaneous
Socket (IC)
"
"
Pr1nted-C1rcu1t
Board
Ass'y
..
•
•
It
"
"
"
"
"
"
•"
•
"
..
6-14
"
"
"
"
"
"
"
"
"
"
585741-1
585741-1
190-4118-1
190-4118-4
190-4118-5
190-4118-7
190-4118-8
190-4118-11
190.4118-12
-C54
CR26
T2
CR23
t'R22
CR27
C.'! I
TZ
~1
R42A
C5
Cl9
BOTTOM Vl(W
TOP VIEW
SRL 60--17
Figure 6-4
SRl 60-17
Typical Chassis Assemblies
SRL Fan Cooled Units
C2JA
C:ll
C21
C26
C2Jf
C23E
C230
11
R46
R40B
R42A,B
R40£
R400
f!P
f!40A
R40C
BOTTOM VIEW
UNITS :?0-40. 60-35. 40-SO{SHOWN)
TOP VIEW
UNITS 20-4ll, 60-35, 40-SO(SHOWN)
6-15
I
0
NOTES: UNLESS
D
1.
2.
3.
4.
5.
5.
7.
6
OTHERWISE SPECIFIED.
CB1-8 USE ONLY ON 10-100 AND 20-50 (115 INPUT) OF THIS GROUP.
CR18C AND D NOT USED ON 20-50, 10-50, 10-100 AND INDICATED !.£AD IS WIRED TO T1-B.
CR26 RELOCATED TO DOTTED POSITION ON MODElS 10-50. 10-100, 20-50 AND 40-50.
R29 NOT USED ON 10-50, 10-100, 2o-5o, 40-50 AND 6D-35.
SHUNT R56 USED ON UNITS 35 AMP OUTPUT AND UP.
CR49 INSERTED AND INDICATED lEAD ,-· USED ONLY ON 40-25, 40-50, 60-17 AND 60-35.
El, E2 AND E3 NOT USED ON MODElS 20-50, 40-50, 60-35 AND 10-100.
5
8.
9.
10.
11.
12.
13.
14.
15.
4
3
C54 USED ONLY ON 16-50, 40-25 AND 60-17.
G56 USED ONLY ON 10-100 AND 40-50.
C57 AND R103 USED ONLY ON 10-100 AND 60-35.
C20A AND R91A USED ONLY ON 20-50.
C33A USED ONLY ON 40-50 AND 10-100.
CR59 AND R102 USED ONLY ON 60-17 AND 60-35.
C55 IS 2.0 P.FD 200V AND R101 IS SHORT CIRCUIT FOR MODEL SRL 40-25.
ADD C58 AND C59 FOR 10-50, 40-25 AND 60-17 ONLY (Ml &: M2).
--------.
I
!I
I'
~~,,
,.
I,
'c ________ J!:I
1
--------,
1'11
J
I
lltt,-J------
-~~~~1
'""'!I ~~~--~-+~~
________ _..!
I
-±-11
8
A
MODEL
-
1IHIO
111-11111
»-1111
<40-D
10-11
8
7
6
5
(~
cJn
15.5
H
14
14
15.5
27.ll
50.0
~
7J.4
27
27
21
27
c
(C28)
11
11
11
8
I
a
a
3
8
7
6
5
4
3
2
SEE SHEET 1
D
D
z-~
a::'
a
~mDD-1
r--
~
I
t
'"('o
OV£RVOLTAGE AMPLIFIER
---------------------- ·-- 1
I
I
I
I
;--------mH-------------------------- ------------------, :
I
c
c
B
A
8
7
6
5
4
3
8
7
6
2
3
4
5
SEE SHEET 1
r----------------------------,
D
I
I
11SV INPUT •
~-!
'
l
,l
4
lj
I
I
l I
I
AU.IIOilWIEl«:CPT40-Sai:I!O-.lli
I
II
;
D
I!
I
fll
L----------------------------J i
I
J-
I
I
c
c
B
r-----------------------------I
1
A
1
I
l
I
:
I
lI
Ii
li
J
Ii
li
' II
_a I j
a
210V 1: 230V (111) INPUT
IIOOOJl 1!0-.lli
'
1
n
1
!
L----------------------~~--J I
l
8
7
6
5
4
3
586246
!HEr
6-16C 1
AG
JOF3
~
".j,.
m
Table 6-3
Replaceable Parts List
Main Assembly
SRL Fan Cooled Units
SRL Model
CIRCUIT
SYMBOL
B1
A««~~~«~///
X
X
X
X
X
X
X
C1
C2
C3
C4
C5
C5
C17
C18
C19
C20
C20A
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C21
X
X
X
X
X
X
X
C23
X
X
X
X
X
X
X
C26
X
C28
C29
C31
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C33
C33A
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C34
C35
C36
C37
C50
X
X
X
X
X
C54
X
C55
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C57
X
X
X
X
C58
C59
C61
CB1**
X
X
X
X
X
X
X
X
X
X
X
SORENSEN
PART NUMBER
91-1000-2
DESCRIPTION
Ean
Capacitors (uF unless noted)
Not Used
0.1, 360V
Not Used
0.1, 360V
2,330V
2,660V
0.1, 250V
0.1, 250V
0.33, 200V
2.2, 100V
Not Used
100,25V
15K, 20V
23K, 20V
4.7K,40V
8.7K, 50V
69K, 15V (7 Required)
85K, 20V (8 Required)
26K, 30V (7 Required)
9.4K, 50V (6 Required)
21 K, 50V (6 Required)
6.5K, 75V (4 Required)
6.5K, 75V {8 Required)
9.6K, 15V
21K, 15V
0.05, 500V
0.05, 500V
6.4K, 15V
26K, 30V
6.7K, 30V
3.2K, 40V
5.8K, 50V
2.5K, 75V
6.5K, 75V
166374-7
166374-7
24-369
825-205-03
587626-65
587626-65
24-2409-16
587626-12
235-7404p8
24-2459-2
24-2459-4
24-2460-2
24-2445-9
24-2594-1
24-2459-5
24-2444-7
24-2595-1
24-2595-2
24-2593-1
24-2593-1
24-2454-8
24-2454-3
24-2010
24-2010
24-2454-4
24-2444-7
24-2444-4
24-2460-1
24-2445-8
24-2523-4
24-2593-1
I
qs•
,,.
Not Used
100,50V
Not Used
Not Used
0.33, 250V
0.33, 250V
0.15, 400V
0.33, 400V
0.68, 400V
Not Used
0.68, 200V
2,200V
Not Used
4, 150V
210/230V only (See page 6210/230V only (See page 63.3, 35V
Circuit Breaker
Circuit Breaker
Circuit Breaker
Circuit Breaker
24-2554-1
24-2556-2
587626-68
587626-68
24-2411-14
24-2411-16
24-2411-18
24-2409-18
24-2409-21
24-2288-1
)
)
586058-13
92-375
92-384
92-383
91
* Includes all components not on PCB.
** 115V input only, see page 6-34 for 210/230 volt.
6-17
Rev E (415/99)
Table 6-3 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Fan Cooled Units
SRL Model
CIRCUI
SYMBOL
~:#/&
DESCRIPTION
SORENSEN
PART NUMBER
Q!.2.Q!!
CR14
CR15*
X
X
X
X
X
X
X
)(
X
X
X
1Nll86A
154KR20A
587382-3
587571-8
S11
Sll
3S11
lfll200A
1N4720
Sll
3S11
1N1200A
1N4720
511
3511
1N1200A
Not Used
1N4720
3511
1Nl200A
Not Used
1N4720
1N1184A
516
516
Not Used
1Nll84A
C45U
C45F
C45A
RD5637
R05637
511
587565-1
587565-1
587566-1
587393-1
26-1006-2
587565-1
587566-1
587393-1
26-1006-2
587565-1
587566-1
587393-1
X
!
X
X
X
X
X
;
'X
)(
X
X
)(
CRl7
CR18A
X
!
X
CR16*
X
X
X
X
X
X
X
X
X
)(
X
)(
X
CRISS
X
X
X
X
X
X
)(
CR18C
CR19A
CR19B
CR22
)(
)(
CR180
X
X
X
X
X
X
X
)(
)(
)(
)(
X
X
X
X
X
)(
X
)(
X
X
X
CR23
X
X
X
X
X
X
X
CR27
X
X
X
X
X
X
X
CR28
X
X
X
X
X
X
CR32
CR35
CR36
CR49
CRSO
X
X
X
X
X
X
X
X
X
)(
X
X
X
)(
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CR57
CR61
CR62
CR64
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
051
OS2
OS3
X
X
X
)(
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
I
Sll
C230CX7
C137CX80
C137CX77
C137E
C230CX7
C137CX80
C137CX77
Cl37E
Sll
154K20A
154K10A
1Nl186A
154K20A
154K10A
1Nl186A
lfU186A
154KR20A
X
587565-1
26-178-5
26-1164
26-1159-1
26-1159-3
26-178-5
26-1164
26-1159-1
26-1159-3
587565-1
587571-6
587571-1
587382-3
587571-6
587571-1
587382-3
587382-3
587571-8
26-1006-2
587566-1
587566-1
26-1006-2
587382-2
587565-4
587565-4
Sll
5873!12-2
26-1161-1
26-1161-2
26-1161-3
26-1017
26-1017
587565-1
587565-1
Power Indicator
Overvoltage Indicator
Thermal Indicator
43-357
43-358
43-358
*115V input only, see page 6- 34for 210/230 volt.
6-18
Table 6-3 (Confd)
Replaceable Parts List
Main Assembly
SRL Fan Cooled Units
SRL Model
CIRCUIT
SYMBOL
F1
F2*
/~""''~'/ ~
X
X
X
X
X
X
X
X
X
X
L1-
X
X
X
X
X
X
X
X
X
X
X
Fuseholder
343-1011P2
X
RFIChoke
RFI Choke
RFIChoke
127-1846
127-1847
127-1851
Voltmeter, 0-12V
Voltmeter, 0-25V
Voltmeter, 0-50V
Voltmeter, 0-SOV
Ammeter, 0-60A
Ammeter, 0-120A
Ammeter, 0-30A
Ammeter, 0-20A
Ammeter, 0-40A
94-579-1
94-579-2
94-579-3
94-579-4
94-462-8
94-462-9
94-462-6
94-462-5
94-462-7
X
X
M1
X
X
X
X
X
X
M2
X
X
X
X
fY!!!!
226-7177P22
226-7177P14
226-7177P77
226-7177P25
X
X
SORENSEN
PART NUMBER
Not Used
2A, 125V, SB
4A, 125VSB
2.5A, 250V SB
1.25A, 250V SB
X
X
XF2
DESCRIPTION
X
X
X
X
Transistors
Q12
X
X
X
X
X
X
X
Q13
X
X
X
X
X
X
X
2N3055A
2N3771
2N3771 (4 Required)
2N3771 ( 7 Required)
2N3771 ( 5 Required)
2N3055 ( Selected - 4 Required)
2N3055 ( Selected - 8 Required)
2N3442 (4 Required)
2N3442 (8 Required)
18-151
18-202
18-202
18-202
18-202
18-151
18-151
18-163
18-163
Resistors (ohms,1/2W,:!:_10 unles
noted)
R18A
R18B
R40
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R41
X
X
X
X
X
X
X
R42
X
X
X
X
X
X
1.2K, 2W, Variable
10, 2W, Variable
0.18, 12.5W, 5% ( 8 Required)
0.18, 12.5W, 5% ( 14 Required)
0.18, 12.5W, 5% ( 4 Required)
0.18, 12.5W, 5% (8 Required)
0.1, 12.5W, 5% ( 5 Required)
0.33, 12.5W, 5% ( 4 Required)
0.33, 12.5W, 5% ( 8 Required)
8 Mllllohms
2.5 Mllllohms
8 Milllohms
20 Mllllohms
40 Mllllohms
15 Mllllohms
5,100W
3, 100W
10,100W
25, SOW (Series - 2 Required)
50, 100W ( Parallel - 2 Req'd)
50, SOW (Series - 2 Required)
*115V Input only, see page 6-34 for 210/230 volt
-L2/L3 added for 210/230 volt Inputs, see page 6-34
6-19
29-296
29-595
27-590-7
27-590-7
27-590-7
27-590-7
27-590-1
27-590-13
27-590-13
190-4159
190-4168
190-4178
190-4140
190-4141
190-4179
27-827
27-1010
27-867
27-809
27-856
27-841
Table 6-3 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Fan Cooled Units
SRLModel
CIRCUIT
SYMBOL
R42
R47
/~~~#X#Y///
X
X
X
X
X
X
X
X
R48
X
X
X
X
X
X
X
R53A
X
X
X
X
R53B
X
X
X
X
X
X
X
X
X
R55
X
X
X
X
X
X
X
X
R56
X
X
X
X
X
X
X
R57
R77
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R83
R85
X
X
X
X
X
X
X
X
X
X
X
X
R90
R91
R91A
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R90*
R94**
R95
R97
R98
R101
R103
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R105
X
X
X
X
X
X
X
DESCRIPTION
SORENSEN PART
NUMBER
Resjstors (ohms, 1/2W, +/-10%
unless noted)
100, 100W (Parallel· 2 Req's)
220, 2W
125, 5W
150, 2W
390,2W
180, 5W
300,2W
150, 5W
3,50W
1,100W
2,50W
1Q....5DW
5, 100W
15, 25W
2K, 2W, Variable, +20, .0%
4K, 2W, Variable, +20, .0%
8K, 2W, Variable, +20, .0%
25K,2W
20, 2W, Variable
40, 2W, Variable
80, 2W, Variable
120, 2W, Variable
0.02
0.015
0.055
0.14
0.185
0.120
60A, 50Mv
120A, 50mV
Not Used
60A, 50Mv
40A, 50mV
3K, 7W
12.1K, 1%
24.9K. 1%
49.9K, 1%
80.6K, 1%
1k
3k, 2W, Variable
4K, 2W, Variable
8K, 2W, Variable
12K, 2W, Variable
47
0.24, 2W, 5
Not Used
1
330, 1/2W
330, 1/2W
2.2K
10
10
1
Not Used
3.3K, 1/2W
6.8K, 1/2W
11K, 1/8W, 1%
27-1009
280·1147P50
28-557
280·1147P44
280·1147P59
27-499-18
280·1147P54
27-499-17
27-805
27-826
27-804
27-850
27-827
27-744
29-587
29-588
29-589
819·253-34
29-591
29-592
29-593
29-594
190-4160
190-4195
190-4180
190-4161
190-4162
190-4194
588151-7
588151-6
94-043
588151-8
27-471-9
28-1408
28-1261
28-1409
28-1351
280·1145P74
29-597
29-598
29-599
29-600
280·1145P26
28-1252
27-1157
280·1145P56
280·1145P56
280·1145P86
280·1145P2
280·1145P2
27-1157
280·1145P91
280·1145P104
586250-124
•omrtted wrth 210/230 volt mputs.
**See page 6-34 for 210/230 volt inputs.
6-20
Rev R (7/99)
Table 6-3 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Fan Cooled Uni~
SRl Model
SORENSEN
PART NUMBER
DESCRIPTION
Switches
51
52
53
X X X X
X X X X
X X X X
X X X
X X X
X X X
Not Used
Voltage/OVP Set Selector
Thermostat, 15A, 120 Vac
SPST, (N.O.)
45-168
92-516
Transformers
T1
Rect.
Input
H
H
X
X
X
X
X
X
X
T2
X
II
It
II
n
It
II
II
H
126-3133
126-3144
126-3145
126-3134
126-3146-1
126-3135
126-3146-2
126-3132
126-3147-1
126-3131
126-3147-2
126-3123
126-3148
II
X
X
X
II
II
X
X
n
Control
.X
X
T3
II
XXXXX
Pulse
II
X
Miscellaneous
X
X X
X
X X X
X
Control Knobs (4 Required)
Board
Ass'y
Printed-Circuit
11
II
..
fl
X
II
X
II
X
II
II
X
X
X
Cover, Bottom
II
X
X
X
X
X
X
X
X
X
X
X
n
••
N
II
II
II
u
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
E3
X X X
X
X
X
X
E2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
n
••
X
X
X
X
Cover,
Rear
..
u
Case Side, Right
X
X
X
..
Case Side, Left
X
X
El
II
It
X
II
II
XXXXX
X
X
II
Cover, Top
X
X
II
XXXXX
X
X
"
II
II
X
Handle (2 Required)
t1
II
II
Foot, Rubber (4 Required)
Foot, Aluminum (4 Required)
Schematic Diagram
Not Used
Binding Post, Black
Not Used
Binding Post, Black
Not Used
Binding Post, Red
Front
Panel
(No
Components)
..
..
It
..
II
II
"
"
II
.
H
X
6-21
H
..
N
II
42-274
190-4118-2
190-4118-3
190-4118-6
190-4118-9
190-4118-10
190-4118-13
190-4118-14
73-3361
73-3381
73-3337
73-3266
73-3218
73-3259
73-3210
73-3264
73-3250
73-3209
73-3263
73-3249
91-1245
30-786
91-214
3D-473
E586246
4-951
4-951
4-950
73-3208-1
73-3248-1
73-3248-2
73-3208-2
73-3248-3
Table. 6-3 (Cont'd)
Replaceable Parts List
Main Assembly
SRL Fa·n Cooled Units
SRL Model
CIRCUI
SYMBOL
~##~h
SORENSEN
PART NUMBER
DESCRIPTION
Miscellaneous
Front Panel (No Components)
X
X
"
It
•
•
-
73-3208-3
73-3248-4
SRL M1 (210Vl and M2 (230Vl
MOaHicadonsi
C28
roc sa
tonnect
lfrom E1
o E2
"C59
(Connect
from
X
X
X
X
Remove
6.8uF,
4.7uF,
3.9uF,
75V
586058-17
585071-37
586386-5
X
6.8uF, 35V
4.7uF, SOV
3.9uF, 75V
586058-17
585071-37
586386-5
92-381
92-385
92-382
X
X
X
X
83-ll~
Capacitor
35V
SOY
lrB:l-.1
CBl
X
X
X
X
X
X
X
Cont. Rect.,
2SA
.. ,2SA
"
26-178-7
26-178-7
X
Fuse,
." ,,
" •
226-7177P25
226-7177P77
226-7177P47
226-7176P39
H
X
CR15
CR16
F2
X
X
X
X
X
X
X
..
Circuit Breaker, lOA, 250 Vac
, 23A, 250 Vac
1 21A 1 250 VIC
"
X
X
X
X
1.2SA, 250V, SB
2.SA, 250V, SB
lA. 250V, SB
lA, 250V
L2
L3
X
X
X
X
X
X
Choke
.. Assembly
586936-1
586936-1
R93
R94
X
X
X
X
X
X
Remove Resistor
Resistor, 680. l/2W
280-1145P68
H
Front Panel
(Special)
n
X
.
II
X
X
H
*Not required for SRL 40-50/60-35.
6-22
H
"
73-3339-1
73-3339-2
73-3339-3
Table 6-4
Replaceable Parts List
PCB Assembly
SRL Fan Cooled Units
SRL Hodel
CIRCUI
SYMBOL
C16
C6
C7
~#K~~ taeacitors
DESCRIPTION
.x
C9
ClO
Cll
C12
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C13
Cl4
Cl5
Cl6
C22
C24
X
X
X
X
X
X
X
X
X
X
X
X
C25
C27
C30
X
X
X
X
X
cs
X
X
X
X
X
X
X
.x
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
y
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
·X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
C32
C38
C39
X
X
X
C40
C41
C43
C44
X
X
X
X
C45
C46
C47
C48
C49
CS1
C56
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
lC
C43
(uF unless noted)
.047,2'51N
X
X
X
X
X
X
SORENSEN
PART NUMBER
1,000, lSV
1,000, 15V
0.015, 250¥
0.033, 250V
20, 12V
25, 75V
0.22, 250V
0.1, 250V
0.01, 250V
0.068, 250¥
0.068, 250¥
0.01, 2SOV
22, 35V
0.047, 250V
0.01, 250V ..
0.001, 200¥
0.01, 250V
0.01, 250V
0.015, 250V
0.0033, 200V
0.0022, 200V
0.001, 200V
4, 25V
100, 25V
0.1, 250V
0.22, 250V
1.8, 250V
Not Used
0.001, 200V
Not Used
0.0022, 200V
10, 200V
0.01, 250V
0.1, 250V
0.1. 250V
Not Used
0.04, 250V
Not Used
0.0047. 2SOV
560pF,300V
24-2015-9
24-2554-4
24-2554-4
24-2015-3
24-2015-7
235-7404P31
235-7404Pll
24-2015-17
24-2015-13
24-2015-1
24-2015-11
24-2015-11
24-2015-1
586058-23
24-2015-9
24-2015-1
24-2409-1
24-2015-1
24-2015-1
24-2015-3
24-2409-4
24-2409-3
24-2409-1
235-7404P35
235-7404P8
24-2015-13
24-2015-17
24-2015-28
24-2409-1
24-2409-3
·24-2496
24-2015-1
24-2015-13
24-2015-13
24-2015-9
24-2409-5
235-7053P317
~
CR1
CR2
CR3
CR4
CRS
CR6
CR7
CR8
CR9
CRlO
CRll
CR12
CR13
'.:R19A/B
CR24
CR25
CR26
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Sll
Sll
Sll
Sll
llf825. Zener, 6.2V
RD5637
RD5637
RD5637
tlot Used
RD5637
RD5637
RD5637
RD5637
Sll
Sl6
Sll
Not Used
587565-1
587565-1
587565-1
587565-1
588105-3
26-1017
26-1017
26-1017
X
X
11147?0
26-1006-2
6-23
26-1017
26-1017
26-1017
26-1017
587565-1
587565-4
587565-1
Table 6-4 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Fan Cooled Units
SRL Model
CIRCUI
SYMBOL
CR29
CR30
CR31
CR33
CR34
CR37
CR38
CR39
CR40
CR41
CR42
CR43
CR44
CR45
CR46
CR47
CR48
CR51
CR52
CRS3
CR54
CRS5
CR56
CR58
CR59
~~~
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CR60
CR63
CR65
CR66
X
X
X
X
X
X
X
X
Ql
Q2
Q3
Q4
QS
Q6
Q7
Q8
Q9
X
X
X
X
X
X
X
X
X
X
X
Q10
Qll
Ql4
Q15
Q16
Q17
Ql8
Q19
Q20
Q21
Q22
Q23
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Q24
X
X
Q25
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DESCRIPTION
SORENSEN
PART NUMBER
~
1N750, Zener, 4.7V
RD5637
RD5637
RD5637
RD5637
RD5637
1N4747A, Zener, 20V
RD5637
R05637
1N52268, Zener, 3.3V
R05637
R05637
RD5637
C106A21, 1COV
R05637
1N5226B, Zener, 3.3V
R05637
R05637
R05637
RD5637
RD5637
R05637
R05637
RD5637
Not Used
R05637
R05637
R05637
SS2996
RD5637
Transistors
26-211
26-1017
26-1017
26-1017
26-1017
26-1017
588102-13
26-1017
26-1017
588101-3
26-1017
26-1017
26-1017
26-1105
26-1017
588101-3
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
26-1017
RT9338
CA3046 (IC, Transistor Array)
CA3046 (IC, Transistor Array)
2N3638
Dual SA1448
2N2907A
2N3638
2N3638
2N697
2N3019
40321
CA3053 (IC, Oiff. Amp)
40312
2N697
2N3641
2Nl671A
2113641
2N3638
2N3638
2tl3641
2N5415
2N3638
2N3638
62490
2N3638
62490
2N5307
18-146
18-605
18-605
18-143
18-176
386-7249PS8
18-143
18-143
18-115
i~~i~~11'\P1.
18-606
18-142
18-115
18-144
18-097
18-144
18-143
18-143
18-144
18-216
18-143
18-143
587062-1
18-143
587062-1
18-214
6-24
26-1017
26-1017
26-1017
587306-4
26-1017
Rev D (6/86)
Table 6-4 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Fan Cooled Units
SRL Model
CIRCUIT
SYMBOL
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
~%%%'%U%r
///
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
2..2K
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
820
3.3K
50, 2W, Variable
47
5.36k, 1/8W, 1%
8.66K, 1/8W, 1%
4.32K, 1/8W, 1%
3.16K, 1/8W, 1%
4.12K, 1/8W, 1%
330
390
1.78K, 1/2W, 1%
3.6K, 1/4W, 2%
560, 1W
2.2K
2.2K
2.05K, 1/8W, 1%
560
3.9K
330, 1W
Not Used
2.49M, 1/2W, 1%
2M, 1/2W, 1%
Not Used
1
2.7K
2.7K
6.48K, 1/BW, 1%
560, 1W
22K
5.6K
220
2.2K
1.2K
2.2K
1.2K
2.2K, 1W
18K
33K
47K
2.2K
12K
12K
20K
9.09K, 1/8W, 1%
11.0K, 1/8W, 1%
7.5K
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R19
R20
R21
X
X
X
X
X
X
X
X
X
R22
R23
R24
R25
R26
R27
R28
R29
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R31
R32
R33
R34
R35
R36
R37
R44
R45
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R46
X
X
X
X
X
X
X
R49
X
X
X
X
X
X
X
R50
R51
R52
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SORENSEN PART
NUMBER
Resistors (ohms, 1/2W, +/-10%
unless noted)
220
390,1W
10
680
357, 1/4W, 1%
1K
1K
1.2K
2K, 2W, Variable
47K
1.5K
X
X
R30
DESCRIPTION
6-25
280·1145P50
280·1180P59
280·1145P2
280·1145P68
28-1285
280·1145P74
280·1145P74
280·1145P77
29-519
280·1145P134
280·1145P80
280·1145P86
280·1145P71
280·1145P91
29-467
280·1145P26
28-1413
28-1414
586055-190
28-1416
28-1417
280·1145P56
280·1145P59
28-1373
801-362-05
280·1180P65
280·1145P86
280·1145P86
586055-89
280·1145P65
280·1145P95
280·1180P56
28-1396
28-1399
27-983
280·1145P89
280·1145P89
586055-113
280·1180P65
280·1145P122
280·1145P1 00
280·1145P50
280·1145P86
280·1145P77
280·1145P86
280·1145P77
280·1180P86
280·1145P119
280·1145P128
280·1145P134
280·1145P86
280·1145P113
280·1145P113
280·1145P120
586250-120
586250-124
280·1145P105
Table 6-4 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Fan Cooled Units
SRL Model
ClRCUI
SYMBOL
~~~
...._c:::: '1-c:::: ~c:::: ~c:::: roC:::: 'oc::::
R52
R54
RSB
R59
X
X
.. X
R60
R61
R62
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R63
X
X
X
X
X
R64
R65
X
X
X
X
X
X
X
X
X
X
X
X
X
R68
R69
R70
R71
R72
R73
R74
R75
R76
R78
R79
RSO
R81
R82
R84
R86
R87
R88
R89
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X· X
R92
X
X
R96
R99
Rl02
X
X
X
X
X
X
X
X
X
X
X
J(
X
X
X
X
X
X
SORENSEN
PART NUMBER
Resistors (ohms, l/2W, tlOS
unless noted)
lOK
47
390
150K
68K
3.9K
3.3K
470
680
820
1K
1K, 2W, Variable
400, 2W, Variable
6.8K
4.7K
12K
22K
33K
5.6K
lOK
lBK
27K
3.3K
220
lOK
30K, 2W
820
237, l/4W, 1S
4.7K
27K, 2W
120K
5K, 2W, Variable
2.7K
1.2K
470
4.7K
470
lK
1M, 1/4W, 1S
3.3M
27K
22K
18K
15K
150
100
lOK, l/4W, 1%
470K
Not Used
12K
X
X
X
R66
DESCRIPTION
280-1145Pll0
280-1145P26
28Q-1145P59
280-1145Pl52
280-1145Pl40
280-1145P95
28Q-1145P91
280-1145P62
280-1145P68
280-1145P71
280-1145P74
29-503
29-547
280-1145Pl04
280-1145P98
280-1145Pll3
280-1145Pl22
280-1145Pl28
280-1145Pl00
280-1145Pll0
280-1145P119
280-1145P125
280-1145P91
28Q-1145P50
280-1145Pll0
585109-56
28Q-1145Pl79
28-1419
280-1145P98
585109-55
280-1145P149
29-426
28Q-1145P89
28Q-114SP77
280-1145P62
280-1145P98
280-1145P62
280-1145P74
28-1418
280-1145P200
280-1145P125
280-1145P122
280-1145Pll9
280-1145P116
280-1145P44
280-1145P38
28-1325
280-1145Pl70
280-1145P113
TB2
X
X
X
X
X
X
X
Terminal Board
43-180
Ul
X
X
X
X
X
X
X
LM741CH
585322-1
6-26
Table 6-4 (Cont'd)
Replaceable Parts List
PCB Assembly
SRL Fan Cooled Units
SRL Model
CIRCUI
SYMBOL
XQ3
XQ4
#~~~k~
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
SORENSEN
PART NUMBER
DESCRIPTION
Miscellaneous
Socket (IC}
II
"
Prfnted-Cfrcuft Board Ass'y
tJ
It
II
tt
II
II
II
II
II
II
"
II
II
"
II
II
II
II
II
II
II
II
II
II
6-27
585741-1
585741-1
190-4118-2
190-4118-3
190-4118-6
190-4118-9
190-4118-10
190-4118-13
190-4118-14
AMBIENT TEMPERA RJRE °C
Figure 6-6
SRL Current Derating Characteristics
1.0
.I
'
.01
A. SHCWICATION (IYflfCAl.) 40 •It•
~'W
0.1 •HY
I, VOL lAG£ MOO£ AT RUt OUTI'UT IUMIN41.S
.001
C. CUlltfNT MODE
.J.l KHZ
1110HZ
Ill< HZ
lOCI< HZ
!MHZ
ftiOUINCY
Figure 6-7
SRL Typical Output Impedance Curves
6-28
12A
20V
T
>
~
l-125 MA --f
12A
A I= 0.1%
I
4--
Figure 6-8
20V
4V •0.1%
Typical Crossover Characteristics (SRL 20-12)
6-29
I
lSOV
RECTIFIED INPUT
WAVEFORM
(SIGNAL BETWEEN
Jl-9 AND Jl-7)
0
22V
CR38
.7V
0
___I_____
13V
--~-------
C39
PEDESTAL
VOLTAGE
--- -----
1.6V
0
3V
CR40
IV
T3
TERMINALS 4-5
0
T=O
Figure 6-9
T =8.3MS
Firing Section Waveforms
6-30
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