KEPCO RA 19-4C User manual

IMPORTANT NOTES:
1) This manual is valid for the following Model and associated serial numbers:
MODEL SERIAL NO. REV. NO.
2) A Change Page may be included at the end of the manual. All applicable changes and
revision number changes are documented with reference to the equipment serial num-
bers. Before using this Instruction Manual, check your equipment serial number to identify
your model. If in doubt, contact your nearest Kepco Representative, or the Kepco Docu-
mentation Office in New York, [phone], requesting the correct revision for your par-
ticular model and serial number.
3) The contents of this manual are protected by copyright. Reproduction of any part can be
made only with the specific written permission of Kepco, Inc.
Data subject to change without notice.
KEPCO®
THE POWER SUPPLIER™
MODEL
INSTRUCTION MANUAL
ORDER NO. REV. NO.
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL [phone] FAX [phone]
email: [e-mail] World Wide Web: http://www.kepcopower.com
KEPCO INC.
An ISO 9001 Company.
©2018, KEPCO, INC
P/N 243-1134-R5
RA 19-4C
RACK ADAPTER
HOT SWAP RACK ADAPTER FOR
HSF 300W, 600W, 1200W, 1500W SERIES POWER SUPPLIES
RA 19-4C
RACK ADAPTER

RA 19-4C 120318 i
TABLE OF CONTENTS
SECTION PAGE
SECTION 1 - INTRODUCTION
1.1 Scope of Manual ..................................................................................................................................... 1-1
1.2 General Description................................................................................................................................. 1-1
1.3 Electrical.................................................................................................................................................. 1-1
1.4 Mechanical.............................................................................................................................................. 1-3
1.5 Accessories............................................................................................................................................. 1-3
1.6 Options.................................................................................................................................................... 1-3
SECTION 2 - INSTALLATION
2.1 Unpacking and Inspection....................................................................................................................... 2-1
2.2 Configuring the Rack Adapter................................................................................................................. 2-1
2.3 Rack Adapter Keying Instructions ........................................................................................................... 2-1
2.3.1 Establishing Key Positions................................................................................................................. 2-2
2.4 Slot Configuration.................................................................................................................................... 2-2
2.4.1 Independent Operation...................................................................................................................... 2-3
2.4.1.1 Using one power supply to control Multiple Power Supplies ....................................................... 2-3
2.4.1.2 Sense Connections for Independent Operation (HSF 300W and 600W Modules Only) ............. 2-4
2.4.1.2.1 Independent Operation - Local Sensing Using Internal DIP switches .......................................2-5
2.4.1.2.2 Independent Operation - Local Sensing Using External Wiring.................................................2-6
2.4.1.2.3 Independent Operation - Remote Sensing ................................................................................2-7
2.4.2 Parallel Operation.............................................................................................................................. 2-8
2.4.2.1 Individual Control......................................................................................................................... 2-9
2.4.2.2 Group Control .............................................................................................................................. 2-11
2.4.2.3 Parallel, Master Selected by User, supplying balanced current to a single load ......................... 2-11
2.4.2.4 Current Balancing........................................................................................................................ 2-14
2.4.2.5 Sense Connections for Parallel Configurations (HSF 300W and 600W Modules Only).............. 2-14
2.4.2.5.1 Parallel Configuration Using DIP Switches to Connect Sense Lines in Parallel........................2-15
2.4.2.5.2 Parallel Configurations using External Wires to Connect Sense Lines
in Parallel (HSF 300W and 600W Only)..................................................................................2-17
2.4.3 Series Connection ............................................................................................................................. 2-19
2.5 Alarm Configurations............................................................................................................................... 2-21
2.5.1 N.O. Alarm Line (Close on Failure).................................................................................................... 2-21
2.5.1.1 Close on Failure Using Rear Panel Dip Switches........................................................................ 2-21
2.5.1.2 Close on Failure Using External Wiring at I/O Mating Connector................................................ 2-24
2.5.1.3 Close on Failure Using External Wiring at Alarm I/O Terminal Block.......................................... 2-25
2.5.2 N.C. Alarm Line (Open on Failure).................................................................................................... 2-25
2.5.2.1 Open on Failure Using Rear Panel Dip Switches........................................................................ 2-26
2.5.2.2 Open on Failure Using External Wiring of I/O Mating Connector ................................................ 2-28
2.5.2.3 Open on Failure Using External Wiring of I/O Alarm Terminal Blocks......................................... 2-29
2.6 Terminations............................................................................................................................................ 2-29
2.7 Cooling.................................................................................................................................................... 2-29
2.8 Installation............................................................................................................................................... 2-30
2.8.1 Installing Optional Protective Cover................................................................................................... 2-30
2.8.2 Installing Optional Bus Bar. ............................................................................................................... 2-30
2.8.3 Installing Optional Locking Bracket.................................................................................................... 2-32
2.9 Installing HSF Power Supplies................................................................................................................ 2-33
2.10 Removing HSF Power Supplies.............................................................................................................. 2-33
2.11 Wiring Instructions................................................................................................................................... 2-33
2.11.1 Safety Grounding............................................................................................................................... 2-34
2.11.2 Source Power Connections............................................................................................................... 2-34
2.11.2.1 EMI Compliance........................................................................................................................... 2-35
2.11.3 Control Signal Connections............................................................................................................... 2-35
2.11.4 Output Load Connections.................................................................................................................. 2-35
2.11.4.1 Reducing Ripple and Noise ......................................................................................................... 2-35
2.11.4.2 Parallel/Redundant Operation...................................................................................................... 2-36

ii RA 19-4C 120318
TABLE OF CONTENTS
SECTION PAGE
2.11.4.3 Series/Independent Operation.................................................................................................... 2-36
2.11.4.4 Mixed Operation.......................................................................................................................... 2-36
2.12 Removing/Replacing HSF Power Supplies ............................................................................................ 2-36
2.13 Shipping.................................................................................................................................................. 2-36

LIST OF FIGURES
FIGURE TITLE PAGE
RA 19-4C 120318 iii
1-1 RA 19-4C Rack Adapter ............................................................................................................................... vi
1-2 RA 19-4C Rack Adapter with 300W, 600W, 1200W or 1500W HSF Power Supplies Installed.................. 1-1
1-3 RA 19-4C Rear Panel Interconnections...................................................................................................... 1-2
1-4 RA 19-4C Rack Adapter Rear Panel .......................................................................................................... 1-3
1-5 RA 19-4C Schematic Diagram.................................................................................................................... 1-7
1-6 RA 19-4C Mechanical Outline Dimensions................................................................................................. 1-9
2-1 RA 19-4C Rack Adapter Keying ................................................................................................................. 2-2
2-2 Controlling Multiple Power Supplies, Multiple Loads .................................................................................. 2-4
2-3 Independent Operation, Local Sensing for PS1 and PS2 using
Internal DIP switches, Simplified Diagram .............................................................................................. 2-5
2-4 Independent Operation, Local Sensing for PS1 and PS2 using
External Wiring, Simplified Diagram........................................................................................................ 2-6
2-5 Independent Operation, Remote Sensing for PS1 and PS2 using
External Wiring at I/O Mating Connector or Euroblock, Simplified Diagram ........................................... 2-7
2-6 Parallel Connection, Individual Control, Master-Slave,
Single Load, Master Determined by Highest Output Voltage.................................................................. 2-10
2-7 Parallel, Master-Slave, Single Load, HSF DIP Switches Define Master and
Voltage Control, RV, COM and CB lines Paralleled by Rack Adapter DIP Switches............................... 2-12
2-8 Master-Slave, Single Load, HSF DIP Switches Define Master and Voltage
Control, RV, COM and CB lines Paralleled by External Wiring at I/O Connector .................................... 2-13
2-9 Typical Parallel Connections Using External Wires for Local/Remote
Sensing and DIP switches to parallel sense wires (HSF 300W and 600W only)..................................... 2-16
2-10 Typical Parallel Connections using External Wires for Local/Remote
Sensing and I/O Mating Connector Jumpers to Parallel sense wires (HSF 300W and 600W Only)........ 2-18
2-11 Series Connection....................................................................................................................................... 2-20
2-12 Typical Close on Failure Alarm Configuration Using Rear Panel Dip Switches
with Output from I/O Mating Connector, Simplified Diagram................................................................... 2-22
2-13 Typical Close on Failure Alarm Configuration Using Rear Panel Dip
Switches, with Output from Alarm I/O Terminal Blocks, Simplified Diagram........................................... 2-23
2-14 Close on Failure Alarm Configuration Using External Wiring at
I/O Mating Connector, Simplified Diagram............................................................................................... 2-24
2-15 Close on Failure Alarm Configuration Using External Wiring at
Alarm I/O Terminal Block, Simplified Diagram......................................................................................... 2-25
2-16 Typical Open on Failure Alarm Configuration Using Rear Panel Dip Switches
with Output from I/O Mating Connector, Simplified Diagram.................................................................... 2-26
2-17 Typical Open on Failure Alarm Configuration Using Rear Panel Dip Switches
with Output from Alarm I/O Terminal Blocks, Simplified Diagram........................................................... 2-27
2-18 Open on Failure Alarm Configuration Using External Wiring
at I/O Mating Connector, Simplified Diagram........................................................................................... 2-28
2-19 Open on Failure Alarm Configuration Using External Wiring
at I/O Alarm Terminal Blocks, Simplified Diagram ................................................................................... 2-29
2-20 Optional Protective Cover or pARALLEL Bus Bar Installation.................................................................... 2-31
2-21 Series Bus Bar Installation.......................................................................................................................... 2-31
2-22 Optional Locking Bracket Installation.......................................................................................................... 2-32
2-23 Ripple and Noise Measurement Setup Diagram......................................................................................... 2-37

iv RA 19-4C 120318
LIST OF TABLES
TABLE TITLE PAGE
1-1 Compatible HSF Power Supplies ...............................................................................................................1-4
1-2 RA 19-4C Accessories ...............................................................................................................................1-4
2-1 Equipment Supplied ...................................................................................................................................2-1
2-2 Rear Panel DIP Switch Functions ..............................................................................................................2-2
2-3 HSF DIP Switch Configuration for Group Control (allows Master to control Output WHILE Slaves Track Master)
2-11
2-4 HSF DIP Switch Configuration for Voltage Control of Multiple Units in Series ...........................................2-19

vi RA 19-4C 120318
FIGURE 1-1. RA 19-4C RACK ADAPTER
3042843
SLOT4
SLOT3
SLOT2
SLOT1

RA 19-4C 120318 1-1
SECTION 1 - INTRODUCTION
1.1 SCOPE OF MANUAL
This manual contains instructions for the installation and operation of the RA 19-4C plug-in rack
adapter (Figure 1-1) used with 300W, 600W, 1200W and 1500W HSF power supplies, manufac-
tured by Kepco, Inc., Flushing, New York, U.S.A.
FIGURE 1-1.
1.2 GENERAL DESCRIPTION
Kepco RA 19-4C rack adapters are specifically designed for the installation of Kepco 300W,
600W, 1200W and 1500W HSF Power Supplies into 19-inch EIA-RS-310D standard equipment
racks. The RA 19-4C Model accommodates up to four 300W, 600W, 1200W or 1500W HSF
power supplies (Figure 1-2).
The rack adapter is user-configurable for parallel, series, or independent power supply opera-
tion. Up to four identical units may connected in parallel. Multiple rack adapters may be paral-
leled for additional current capacity. Forced current sharing and OR’ing diodes for N+1
redundancy are built into the HSF power supplies. Redundant a-c inputs are provided to deliver
independent source power to each power supply in a redundant pair. User-configurable keying
ensures that only the correct power supply can be installed in a keyed slot.
FIGURE 1-2. RA 19-4C RACK ADAPTER WITH 300W, 600W, 1200W OR 1500W HSF POWER SUPPLIES
INSTALLED
1.3 ELECTRICAL
An internal PCB back plate mounts connectors which interface directly with the power and sig-
nal connectors of 300W, 600W, 1200W and 1500W HSF power supplies, permitting hot swap-
pable insertion and extraction. The other side of the back plate assembly, available from the
rear, contains the fixed power and signal connections. Figure 1-3 shows RA 19-4C Rack
Adapter interconnections as well as details of the connectors and DIP switches located on the
rear panel (see Figure 1-4). Dual input terminal blocks on the rear panel (Figure 1-4) distribute
input power to each of the four power supplies. Figure 1-5 is a schematic diagram of the RA 19-
4C Rack Adapter.
All mechanical specifications are contained in the mechanical outline drawing, Figure 1-6.
3042844
PS1 PS2 PS3 PS4

1-2 RA 19-4C 120318
FIGURE 1-3. RA 19-4C REAR PANEL INTERCONNECTIONS

RA 19-4C 120318 1-3
1.4 MECHANICAL
The rack adapter is equipped with mounting ears for mounting in EIA-RS-310D standard 19-
inch racks. For mounting in non-standard racks, consult Kepco Applications Engineering. The
rack adapter is not configured for side-mounted slides, however bottom-mounted slides are
available as KIT 219-0508 (see Table 1-2, Accessories). Optional blank filler panels (see Table
1-2) are available if the full complement of power supplies is not utilized.
Mechanical dimensions, material, and finish of the RA 19-4C Rack Adapter are provided in Fig-
ure 1-6.
1.5 ACCESSORIES
Accessories for RA 19-4C Rack Adapters are listed in Table 1-2; see also Table 2-1 for addi-
tional accessories supplied with the unit.
1.6 OPTIONS
Table 1-1 describes the standard model options available with the RA 19-4C rack adapter. For
non-standard options, contact Kepco Applications Engineering for assistance.
FIGURE 1-4. RA 19-4C RACK ADAPTER REAR PANEL
DC OUTPUT
PS2
CABLE CLAMP*
DC OUTPUT
PS2
DC OUTPUT
PS3
DIP 4
CABLE CLAMP*
DC OUTPUT
PS4
DC OUTPUT
PS4
CABLE CLAMP*
DC OUTPUT
PS3
DIP 3
DC OUTPUT
PS1
CABLE CLAMP*
DC OUTPUT
PS1
DIP 2 DIP 1
PS2 KEYING
PS3 KEYING
3042889
I/O CONNECTOR,
PS4
SOURCE POWER
INPUT FOR
PS2 AND PS4
I/O CONNECTOR,
PS3
* CABLE CLAMPS ARE USER
INSTALLED.
SOURCE POWER
INPUT FOR
PS1 AND PS3 I/O CONNECTOR,
PS1
CABLE CLAMP*
AC INPUT
PS1 AND PS3
PS4 KEYING CABLE CLAMP*
AC INPUT
PS2 AND PS4
I/O CONNECTOR,
PS2
ALARM I/O
PS3
ALARM I/O
PS4
ALARM I/O
PS2 PS1 KEYING
ALARM I/O
PS1

1-4 RA 19-4C 120318
TABLE 1-1. COMPATIBLE HSF POWER SUPPLIES
MODEL Total Compatible HSF Models *
1200 Watts 1500 Watts 600 Watts 300 Watts
RA 19-4C 4 (max) HSF 24-50 HSF 48-32
HSF 36-42 HSF 12-53 HSF 15-43
HSF 24-27
HSF 28-23
HSF 48-13
HSF 5-60
HSF 12-27
HSF 15-22
HSF 24-14
HSF 28-12
HSF 48-7
* Unless otherwise noted, Models that include a suffix specifying an option, e.g., M for Meter, C for Current Monitoring,
etc., are compatible. Contact Kepco Applications Engineering for assistance with non-standard configurations.
TABLE 1-2. RA 19-4C ACCESSORIES
ACCESSORY PART NUMBER USE
Screw, Thread forming
(4-40, 0.75 in. long, PHPH) 101-0480 Module Keying. eight (8) supplied with unit. Installed by user (see PAR.
2.3).
Line cord 118-1145 Connect to 30A, 125-250V a-c source power via NEMA 10-30P connec-
tion.
Line cord 118-1146 Connect to 32A, 250V a-c source power via IEC 309 connection.
Connector 142-0449 Mating Connector for I/O connector. Four (4) supplied with unit.
Filler Panel (1/4 Rack) RFP 19-14C Cover one unused 1/4 rack slot.
Filler Panel (1/2 Rack) RFP 19-12C Cover two unused 1/4 rack slots.
Bus bar, Series 172-0593 Connect Output Terminals, (–) to (+) for series operation.
Bus bar, Parallel, 2 Slots
(Clearance: 2.6mm) 172-0590
Connect slots 1 and 2, 2 and 3, or 3 and 4 in parallel; two bus bars
required for each paralleled slot: one for (+), one for (–). Bus bar is 3/32
in. thick, clearance between (+) and (–) is 2.6mm with two output studs.
Each stud is 5/16-18, 1.2-inch long minimum.
Bus bar, Parallel, 2 Slots,
1 Output Stud
(Clearance: 6.4mm) 172-0607 Same as P/N 172-0590 except bus bar is 1/8 in. thick and clearance
between (+) and (–) is 6.4mm; only one (1) output stud (5/16-18) per
busbar. Each stud is 5/16-18, 1.2-inch long minimum.
Bus bar, Parallel, 2 Slots
2 Output Studs
(Clearance: 6.4mm) 172-0615 Same as P/N 172-0590 except bus bar is 1/8 in. thick and clearance
between (+) and (–) is 6.4mm with two (2) output studs per busbar. Each
stud is 5/16-18, 1.2-inch long minimum.
Bus Bar, Parallel, 3 Slots
(Clearance: 4.5mm) 172-0591
Connect slots 1, 2 and 3, or 2, 3 and 4 in parallel; two bus bars required
for each paralleled set of slots: one for (+), one for (–). Bus bar is 1/8 in.
thick, clearance between (+) and (–) is 4.5mm with two (2) output studs
per busbar. Each stud is 5/16-18, 1.2-inch long minimum.
Bus Bar, Parallel, 3 Slots
(Clearance: 6.4mm) 172-0608 Same as P/N 172-0591 except clearance between (+) and (–) is 6.4mm.
Bus Bar, Parallel, 4 Slots
(Clearance: 4.5mm) 172-0592
Connect slots 1 through 4 in parallel; two bus bars required for each rack
adapter: one for (+), one for (–). Bus bar is 1/8 in. thick, clearance
between (+) and (–) is 4.5mm with three (3) output studs per busbar.
Each stud is 5/16-18, 1.2-inch long minimum.
Bus Bar, Parallel, 4 Slots
(Clearance: 6.4mm) 172-0609 Same as P/N 172-0592 except clearance between (+) and (–) is 6.4mm.
Bus Bar, Pair, Parallel, 4 Slots
(Clearance: 6.4mm) 172-0688
Connect slots 1 through 4 in parallel; 1 pair, (+) and (–), bus bars
required for each rack adapter: Bus bar is 1/8 in. thick, clearance
between (+) and (–) is 6.4mm. Instead of output studs, each bus bar has
15 6-32 tapped holes for output connections..
Bus Bar, Series 172-0593 Connects adjacent slots (+) to (–) to series configurations.
Hex Nut (5/16-18) 102-0105 Attach load cables to studs of optional bus bars.

RA 19-4C 120318 1-5/(1-6 Blank)
Protective cover 137-0145 Clear plastic cover, protects against accidental contact with DC output terminals. Four standoffs (not supplied), Kepco P/N 104-0385, required
for installation
Standoff (Protective cover) 104-0385 Four (4) required to install protective cover, Kepco P/N 137-0145.
Male/female, 8-32 x 1.5 in. long
Setback Ear Brackets, 19 inch Rack
(2 required) 128-2168 Used to mount rack adapter in 19-inch rack using “set back” position for
applications that require reduced depth protrusion (see Figure 1-6).
Ear Brackets, 23 inch Rack
(2 required) 128-1895 Used to mount rack adapter in 23-inch rack, front mount only. For “set
back” position for applications that require reduced depth protrusion con-
tact Kepco
Adapter Brackets, 24 inch Rack
(2 required) 108-0386 Used to mount rack adapter in 24-inch rack (EMCOR P/N ABA05)
Screws
((8 required, 4 for each ear bracket) 101-0446 Used to attach ear brackets to rack adapter chassis.(6-32 x 1/4, Flat
Head Phillips Tri-torq, Tubular Self Forming.
Connector, Euro-plug 142-0544 Mating connector for ALARM TB1-TB4 Euro-header.
Slide Kit (bottom mount) KIT 219-0508 Allows rack adapter to slide out from the front. Requires additional 1U
(1.75 in.) minimum height)
Locking Bracket See PAR. 2.8.3;
consult factory Provides additional reinforcement for severe vibration or shock environ- ments.
Support Bracket 128-1775 Pair required. Used to provide side support for rack adapter. Requires
rear rail at 18-13/16 in. setback.
TABLE 1-2. RA 19-4C ACCESSORIES (CONTINUED)
ACCESSORY PART NUMBER USE

120318 6-7
SECTION 1 - w
N2
N4 L4
L4 N4
N3
NC 4 -RC 4 -COM4 +IMON 4 -IMON 4
REF 4
+PF4
L3
+3 -3
+RC 4 -PF4
L2
NO 4
+4
CSB 4
AL COM 4 S+4
-2
RV4
+2
GND
REF 1
L1
L1
GND
N1
GND
RV 1
N1
-COM1 CSB 1 -IMON 1
+PF2 S-2 RV2 +RC 2 -PF2 REF 2 -COM2 CSB 2 AL COM 2 NC 2 -IMON 2 -RC 2 NO 2 +IMON 2 S+2
NO2
AL.COM2
NC2
+S2
-S2
+PF2
-PF2
+RC2
-RC2
-PF1
NO1
AL COM 1
AL. COM1
-RC1
+PF1
-RC 1
+RC1
NO 1
NC1
-PF1 +PF1
NC 1 +RC 1
RV 3 -COM3 CSB 3 -IMON3 S-3 REF 3 +RC 3 AL COM 3 NO 3 NC 3 +IMON 3 S+3
NO3
AL.COM3
NC3
+S3
-S3
-RC 3
+RC3
-RC3
-4
NO4
+AL.COM4
NC4
+S4
+PF4
-PF4
+RC4
-RC4
S-4
-S4
+PF3 -PF3
+PF3
-PF3
+IMON 1
-1
S -1 S +1
-S1
+S1
+1
P-4
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
1
2
3
4
5
6
7
8
9
10
DIP1
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
I/O TB1
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
I/O TB3
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
I/O TB4
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
I/O TB2
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
DIP2
1
2
3
4
5
6
7
8
9
1011
12
13
14
15
16
17
18
19
20
P-3
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
P-1
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
- --
J1
1 3 5 7 9 11 13 15 17 19 21 22
2 4 6
8 10 12 14 16 18 20
23 24
+ - - S- S+ Imon- NC REF CSB -PF -RC GND
+ +
-
Imon+ NO -COM AL.COM. +PF RV +RC
N
L
- --
J4
1 3 5 7 9 11 13 15 17 19 21 22
2 4 6
8 10 12 14 16 18 20
23 24
+ - - S- S+ Imon- NC REF CSB -PF -RC GND
+ +
-
Imon+ NO -COM AL.COM. +PF RV +RC
N
L
- --
J2
1 3 5 7 9 11 13 15 17 19 21 22
2 4 6
8 10 12 14 16 18 20
23 24
+ - - S- S+ Imon- NC REF CSB -PF -RC GND
+ +
-
Imon+ NO -COM AL.COM. +PF RV +RC
N
L
TB3+
1
P-2
8 15 7 14 6 13 5 12 4 11 3 10 2 9 1
TB1-
1
TB1+
1
TB2+
1
TB2-
1
TB4+
1
TB4-
1
JP35
TB-IN24
1 2 3
TB-IN13
1 2 3
JP36
JP37
JP39
JP40
JP44
JP43
JP42
JP41
MTG1
1
GND
MTG2
1GND
JP38
1
2
3
4
5
6
7
8
9
10
DIP4
1
2
3
4
5
6
7
8
9
1011
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
DIP3
1
2
3
4
5
6
7
8
9
1011
12
13
14
15
16
17
18
19
20
TB3-
1
- --
J3
1 3 5 7 9 11 13 15 17 19 21 22
2 4 6
8 10 12 14 16 18 20
23 24
+ - - S- S+ Imon- NC REF CSB -PF -RC GND
+ +
-
Imon+ NO -COM AL.COM. +PF RV +RC
N
L
CSB 4
JP22
S-2
NO3
CSB 2
NO4
V-4
S+4
CSB 1
NO3
V-2
JP31
AL COM1
JP13
S-1
NO2
JP25
V+2
JP33
JP10
AL COM2
V-3
JP28
JP27
AL COM4
JP16
S+3
JP18
CSB 3
V+3
S-4
NO2
S+1
AL COM2
NC2 NC3
V+1
JP19
AL COM3
S-3
AL COM3
S+1
S+2
JP32
JP21
S+2
S+2
S+3
JP30
JP14
S-1
JP20
JP12
JP23
S+3
S+4
CSB 2
JP34
S-3
CSB 3
S-2
NC1
S-2
V+4
JP24JP15
JP11
JP9
S-3V-1
S-4
NO1
JP29
AL COM2 AL COM3 AL COM4
-COM1
RV1 RV2
-COM2 -COM2 -COM3
RV2 RV3
-COM3
RV3 RV4
-COM4
FIGURE 1-5. RA 19-4C SCHEMATIC DIAGRAM
PROPRIETARY DATA
©2005, KEPCO, INC
NOTES:
1. ALARM I/O TERMINAL BLOCKS TB1 THROUGH TB4 HAVE ONLY FIVE
PINS: 1 THROUGH 5 (NO, AL COM, NC, +S AND –S, RESPECTIVELY).
2. SENSE CONNECTIONS DO NOT APPLY TO HSF 1200W AND 1500W
UNITS.
3020736
1-7/1-8 (Blank)
6-6/6-7

120318 6-9
2.111 [53.6]
7.635[193.9]
4.220[107.2]
3.576 [90.8]
1.325[33.7]
1.075 [27.3]
0.723 [18.4]
4.945[125.6]
19.000[482.6]
19.000[482.6]
16.021 [406.9]
2.250 [57.1]
5.218[132.5]
0.250 [6.4]
1.484 [37.7]
0.845[21.5]
1.484 [37.7]
5.218 [132.5]
0.509 [12.9]
2.197 [55.8]
6.488[164.8]
0.300 [7.6]
0.723 [18.4]
0.648 [16.5]
0.827[21.0]
4.881[124.0]
4.320[109.7]4.320[109.7]3.267[83.0]
0.480 [12.2]
1.075 [27.3]
2.530[64.3]
3.583 [91.0]
NOTES:
1. MATERIAL:
A) CHASSIS,COVER STEEL CRS #14 GAGE
B) BACK COVER ALUMINUM #14 GA.
2. FINISH:
A) CHASSIS & COVER: CLEAR ZINC PLATED
B) FRONT PANEL & ANGLE BKT: KEPCO GRAY,
C) BACK COVER: CLEAR IRIDITE
3. RACK OR CABINET MOUNTING: REMOVE (4) PLASTIC FEET
4. DIMENSIONS IN PARENTHESES ARE IN MILLIMETERS.
5. THREADED HOLE FOR EXTERNAL GROUND, 8-32:
MAX DEPTH 0.3 IN., MAX TORQUE 20 LB-IN.
6.000 [152.4]
2.000 [50.8]
0.125 [3.2]
6.000 [152.4]
2.000 [50.8]
PROPRIETARY DATA
©2006, KEPCO, INC
FIGURE 1-6. RA 19-4C MECHANICAL OUTLINE DIMENSIONS
1-8/1-9(Blank)
1-9/1-10 (Blank)

RA 19-4C 120318 2-1
SECTION 2 - INSTALLATION
2.1 UNPACKING AND INSPECTION
This equipment has been thoroughly inspected and tested prior to packing and is ready for
operation. After careful unpacking, inspect for shipping damage before attempting to operate. If
any indication of damage is found, file an immediate claim with the responsible transport ser-
vice. See Table 2-1 for a list of equipment supplied.
2.2 CONFIGURING THE RACK ADAPTER
Prior to installation the rack adapter must be configured by the user. Configuration consists of
the following:
• For configurations that use multiple output voltages it is possible to key the rack adapter
to accept only a power supply with corresponding keying (see PAR 2.3).
• Configuring slots for independent, parallel, or series operation. This can be done by
means of DIP switches mounted on the rear panel, or externally by wiring the associated
I/O mating connector or mating Euro plug and (+) and (–) OUTPUT terminals (see PAR.
2.4).
2.3 RACK ADAPTER KEYING INSTRUCTIONS
RA 19-4C rack adapters incorporate a keying mechanism to prevent accidental insertion of the
incorrect model HSF power supply into any position. The HSF power supplies are keyed by volt-
age at the factory. The keying mechanism will prevent engagement of any of the HSF power
supply's connectors with those on the rack adapter's back plate unless the key and keyway
align. The key pins are on the HSF power supply and are set at the factory. DO NOT ALTER
THE KEYING AT THE POWER SUPPLY. The keyway is established by installing screws (pro-
vided) so that the only open holes match the power supply pins; maximum torque is 5 in.-lbs.
The user can configure each power supply slot for the desired voltage in the desired position.
Figure 1-4 shows the location of key positions for each slot and Figure 2-1 shows the configura-
tion required for voltage selection.
TABLE 2-1. EQUIPMENT SUPPLIED
ITEM QUANTITY PART NUMBER
Rack Adapter 1 RA 19-4C
I/O Connector (Mating) 4 142-0449
Instruction Manual 1 243-1130
Keying screws (4-40 x 0.75 in., thread forming) 8 101-0480
Hood for I/O Connector (Mating) P/N 142-0449 4 108-0204
Cable clamp 6 138-0063
Chassis Feet 4 158-0008
Output connection screw (10-32 x 1/2, Hex head) 8 101-0365
Output connection washer #10 (ID: 0.210, OD: 0.433 .039 thk, steel) 8 103-0136
Screw, BHPH 6-32X 0.500ST (attach feet) 4 101-0019
Washer, Flat, No. 6 (attach feet) 4 103-0100
Lockwasher, No. 6 (attach feet) 4 103-0015

2-2 RA 19-4C 120318
2.3.1 ESTABLISHING KEY POSITIONS
To establish the keying of any position, simply install the 4-40 x 0.75 in. thread-forming screws
(Kepco P/N 101-0480) into the corresponding holes as indicated in Figure 2-1. DO NOT OVER-
TIGHTEN these screws (max torque 5 in.-lbs. (0.6 N x m). DO NOT ALTER THE KEYING AT
THE POWER SUPPLY.
FIGURE 2-1. RA 19-4C RACK ADAPTER KEYING
2.4 SLOT CONFIGURATION
Configuring slots of the rack adapter for independent, parallel or series operation is accom-
plished either by means of DIP switches mounted on the rear panel associated with each slot
(see Figure 1-3), or externally by connecting the appropriate pins of the associated I/O mating
connector. DIP switch functions are explained in Table 2-2. The schematic diagram (Figure 1-
5), which shows all internal connections, is provided as a reference.
Slot configuration requires the following selection:
1. Select independent (PAR. 2.4.1), parallel (PAR. 2.4.2), or series (PAR. 2.4.3) operation.
2. Optional: Select close-on-failure or open-on-failure alarm (PAR. 2.5).
TABLE 2-2. REAR PANEL DIP SWITCH FUNCTIONS
DIP
SWITCH
POSITION FUNCTION DIP SWITCH SET TO ON (CLOSED) DIP SWITCH SET TO OFF (OPEN)
NOTE: BOLD TYPE INDICATES FACTORY SETTINGS.
1, 2
(SEE NOTE)
Local /
Remote
Sensing
Selection
Required ON (factory default) for inde-
pendent operation with Local Sensing.
Position 1 connects V+ to S+, Position 2
connects V– to S– (see PAR. 2.4.1.2).
Position 1 and 2 required OFF for:
a) Independent configurations using Remote Sensing
(see PAR. 2.4.1.2).
b) Independent configurations using Local Sensing with
user supplied connections from V+ to S+ and V– to S–
(see PAR. 2.4.1.2).
c) All parallel configurations (sensing must be estab-
lished using external wires) (see PAR. 2.4.2.5).
d) All series connections (see PAR. 2.4.3).
NOTE: Positions 1, 2, 3, 4 not used for HSF 1200W and 1500W modules; leave in default position.
= SCREW TO BE INSTALLED
AT REAR PANEL.
= NO SCREW INSTALLED.
DESIRED VOLTAGE 5V 12V15V 24V 28V 48V