KEPCO RMW 300W User Manual

QUICK START GUIDE

KEPCO

An ISO 9001 Company.

RMW

300W, PFC, OPEN FRAME

POWER SUPPLIES

I — INTRODUCTION

SCOPE OF MANUAL. This Quick Start Guide covers

the installation and operation of the Kepco RMW
Series of Open Frame Switching Power Supplies. Full
specifications are listed in the Operator Manual that
can be downloaded from the Kepco web site:

• www.kepcopower.com/support/opmanls.htm#rmw

DESCRIPTION. Kepco RMW Series are 300W RoHS­compliant switching power supplies with seven models pro­viding 5V, 12V, 15V, 24V, 28V, 48V and a triple output
model (RMW 51212-300K) which provides a primary output
of +5V and secondary outputs of ±12V). All models also

TABLE 1. RMW OPEN FRAME MODELS

VOLTAGE 5V 5V, ±12V 12V 15V 24V 28V 48V

MODEL RMW 5-60K RMW 51212K-300 RMW 12-25K RMW 15-20K RMW 24-12K RMW 28-11K RMW 48-6.2K

include a separate +12V output that can be used to power
an external cooling fan and an output suitable for driving an
LED. Power Factor Correction (PFC) is included in all mod­els.

Units may be operated with a nominal 115V a-c or 230V a-c
(input voltage range 85 to 264 Va-c), 50-60 Hz (input fre­quency range 47-66Hz). If overvoltage protection trips, the
unit shuts down; it is necessary to cycle input power off,
then on to reset the unit. Overcurrent protection with auto­matic recovery from short circuit is featured (except for sin­gle-and triple output 5V models that latch off when
overcurrent or short-circuit is detected). Units are convec­tion cooled U-chassis construction.

Open Frame

II — INSTALLATION

MOUNTING THE POWER SUPPLY. Refer to Figure

1. The unit may be mounted using 6-32 mounting screws
(not supplied). Eight mounting holes are provided: four on
the base, and two on each side. Note the restrictions for
maximum penetration of mounting screws (see Figure 1). .

FIGURE 1. MOUNTING SCREW PENETRATION

CONNECTIONS. All connections are made via TB1
through TB5 (see Figure 2 for locations). AC input power is

TABLE 1. TB2 DC OUTPUT PIN ALLOCATION

MODEL 1 2 3 4 5 6 7 8 9 10 11 12

RMW 5-60K

RMK 51212K-300 +5V GND +12V –12V --- ---

RMW 12-25K +12V GND RTN (+12V) +12V --- --- --- --­RMW 15-20K +15V GND RTN (+12V) +12V --- --- --- --­RMW 24-12K +24V GND RTN (+12V) +12V --- --- --- --- --- -­RMW 28-11K +28V GND RTN (+12V) +12V --- --- --- --- --- --

RMW 48-6.2K +48V GND RTN (+12V) +12V --- --- --- --- --- --

(1) CAUTION: Limit RMW 5-60K to 15A maximum per output terminal to avoid overheating

KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL [phone]  FAX [phone]

©2010, KEPCO, INC 1
Data subject to change without notice 228-1690

(1)

+5V

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applied via the terminal block TB1. Connect the AC input
Neutral, Line and Earth Ground wires to the respective ter­minals of the terminal block (see Figure 2). TB2 provides
the DC outputs; see Table 1 for pin allocation. TB3, TB4
and TB5 are each 2-pin connectors that require a Molex
5045-02A (or equivalent) mating connector. TB3 provides a
floating +12V output for use with an auxiliary fan (not sup­plied). TB4 provides ± connections used for remote sens­ing. TB5 provides connections used to drive an external
Power OK LED (not supplied).

Figure 3 shows proper connection of one or more loads. If

oscillations set off overvoltage protection, install one elec­trolytic capacitor (470µF min) between +S and + and one
between – and –S terminals.

OUTPUT TERMINAL

GND +5V RTN (+12V) +12V

FIGURE 2. COMPONENT LOCATIONS

III — OPERATION

When output voltage is available, the output at TB5 is
available to drive an external LED and the +12V output at
TB3 is available to power an external cooling fan. The

A

B

Output Voltage Adjust trimmer (see Figure 2) allows
adjustment of the primary output voltage.

C

FIGURE 3. LOAD CONNECTIONS

KEPCO, INC.  131-38 SANFORD AVENUE  FLUSHING, NY. 11355 U.S.A.  TEL [phone]  FAX [phone]

2 228-1690 072710

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