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Connections, Removal, Figure 2. component locations – KEPCO HSF 600W Series (no suffix, suffix M and MZ) Quick Start Guides User Manual

Page 2: Iii — operation

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KEPCO, INC. " 131-38 SANFORD AVENUE " FLUSHING, NY. 11355 U.S.A. " TEL (718) 461-7000 " FAX (718) 767-1102

http://www.kepcopower.com " email: [email protected]

CONNECTIONS. All connections are made at the rear

panel of the RA 19-4C Rack Adapter (see RA 19-4C
Operator Manual).

REMOVAL. To remove a power supply, first use the

POWER switch to turn off the unit. Release the two cap
head screw retaining latches (see Figure 2) by loosening

the cap-head screw approximately 1/2 turn CCW (use 5/
32" hex key) and slide to the open (up) position. Then
extract the unit from the RA 19-4C Rack Adapter. CAU-
TION: The ON/OFF switch must be set to OFF before
removing the unit from the rack adapter.
Leave the
latches in the open position when not installed.

FIGURE 2. COMPONENT LOCATIONS

III — OPERATION

Turn the unit on using the front panel POWER switch (see
Figure 2). CAUTION: DO NOT repeatedly toggle the
POWER on/off switch as this may cause unit to fault.

When output voltage is within range specified in applica-
ble Operator Manual, the VDC ON LED is on (green). The
VDC ON indicator can be configured to light red to indi-
cate a loss of output voltage (see applicable Operator
manual). NOTE: Except for MZ models, a minimum
output voltage is required to keep the internal relay
and optional meter functioning
(see applicable Opera-
tor manual). VDC ON LED functions to 0V for MZ models.

While monitoring output voltage at the front panel test
points, the V ADJ Output Voltage Adjust trimmer allows
adjustment of the output voltage. The unit can also be
configured to control output voltage using a remote resis-
tance or voltage (see applicable Operators manual).

The OUTPUT RESET switch can be used to recycle
power in the event of an alarm condition. This switch does
not function if the remote on/off feature has been enabled
(see applicable Operator manual).

The following features of the HSF 600W power supplies
are covered in the applicable Operator manual:

• Parallel Operation, including current balancing

requirements. Parallel operation with current balanc-
ing (forced current sharing) is recommended to
increase reliability and results in minimal output volt-
age bus variation upon shutdown of one unit in a
fault-tolerant configuration.

NOTE: To avoid false alarm triggers or unit shutdown

when operating units in parallel, 600W stan-
dard (no meter) models with M, C or no option
require a minimum load; 600W models with
MZ option require voltage set restrictions.
Minimum load and voltage restrictions are
specified in the applicable Operator Manual.

• Remote On/Off and Voltage adjustment

• Protection Circuits

• Alarms

• Keying

• Local/Remote Sensing (Remote error sensing is rec-

ommended for correct setting of output voltage,
especially for parallel configurations.)

• Options

A (Amperes) indicator (M, MZ Suffix only)

Lights amber when meter shows Amperes.

V (Voltage) indicator (M, MZ Suffix only)

Lights green when meter shows Volts.

Meter Mode slide switch (M, MZ Suffix only)
Set to V to show output voltage on meter,

set to A to show output current.

3043518

Retaining Latches (2) Prevents inadvertent
removal of unit from rack adapter.

POWER ON/OFF switch Applies power

to the unit. CAUTION: Power must be

OFF before unit is removed from the

rack adapter.

OUTPUT RESET switch Used to recycle
power in the event of an alarm condition.
Not functional when remote on/off control
is enabled.

TEST POINT (±) Connect to external
voltmeter to monitor d-c output voltage.

V. ADJ Output Voltage Adjustment Trimmer:
Adjusts output voltage. Not functional if

remote voltage control is enabled.

VDC ON/ALARM Indicator Lights green when

unit is operating. Can be configured by DIP switch

to light red to indicate loss of output voltage in

parallel configurations. MZ and W models allow
selection of whether indicator is powered by
output or will function down to 0V.

Voltage/Current Meter (M, MZ Suffix only)

Monitors output voltage or current per
Meter Mode switch. Remote sensing required

for voltmeter to display voltage at the load.