HSF 600W 042315
1
1
INTRODUCTION
1.1
SCOPE OF MANUAL
This Operator's Manual covers the installation and operation of the Kepco HSF 600W Series of
Switching Power Supplies. This manual covers only standard (no suffix) and Option C models. For
service information, write directly to: Kepco Inc., 131-38 Sanford Avenue, Flushing, New York,
11355, U.S.A. Please state Model Designation and Serial Number of your HSF Power Supply.
This information can be found on the nameplate of the unit.
1.2
DESCRIPTION
The Kepco HSF 600 Watt Series are hot swappable, high frequency switching, plug-in power sup-
plies. Five models may be selected for outputs of 12V, 15V, 24V, 28V or 48V. They employ for-
ward conversion and power factor correction and are designed to operate in a fault tolerant power
system with a nominal a-c input of 100V a-c to 240V a-c (input voltage range 85 to 264 Va-c), 50-
60 Hz (input frequency range 47-440Hz). A built-in current balancing circuit and OR-ing diodes
allow configuration for hot-swap and parallel-redundant N+1 operation.
These power supplies are designed to be used with Kepco's Series RA 19-4C rack adapters. The
RA 19-4C rack adapter accepts up to four 600W modules. All input/output connections are
through a 24-pin connector that plugs in to the rack adapter. All external connections described in
the following paragraphs are made through the rack adapter’s I/O connector (see Figure 1).
1.3
OPTIONS
Option C models allow independent monitoring of output current of non-metered models by pro-
viding an integral sense resistor (Rs). Current monitoring is via ±IMON assigned to pins 9 (–) and
1 (+) of the RA 19-4C I/O connector: Monitored Output Current (Amps) = Voltage drop across Rs
(Volts) / Rs (Ohms) (see Table 2), where voltage drop across Rs is measured across ± IMON pins
(requires millivoltmeter, range 0 to 200mV). Accuracy is ±10%; contact Kepco if greater accuracy
is required. There is no isolation between ±IMON, alarm circuit and d-c output. Refer to the RA
19-4C Manual for details.
RoHS-compliant models are indicated by HSF* (e.g., HSF 28*23).
FIGURE 1. HSF REAR PANEL CONNECTOR AND RA 19-4C RACK ADAPTER I/O CONNECTOR
3042951
8
9
7
12 11 10
15
18
16
17
14 13
21 20 19
2
1
3
4
5
6
22
23
24
1
2
3 OUTPUT-
5 OUTPUT-
7 S-
8 IMON+
10 NO
4
OUTPUT- 6
S+ 9
IMON - 11
REF 15
CSB 17
+RC 20
13 NC
14 AL COM
16 +PF
19 -PF
AC IN (GND) 22
AC IN (L) 24
23 AC IN (N)
-COM 12
RV 18
-RC 21
