KEPCO HSF-PFC 150W Series Quick Start Guide - Manual (Page 2)

2
228-1676 REV 3 082813
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]
III — OPERATION
Turn the unit on using the front panel POWER switch (see
Figure 1). CAUTION: DO NOT repeatedly toggle the
POWER on/off switch as this may cause unit to fault.
FIGURE 1. COMPONENT LOCATIONS
When output voltage is available, the green VDC ON LED
is on. While monitoring output voltage at the front panel
test points, the Output Voltage Adjust trimmer allows
adjustment of the output voltage.
Master/slave parallel configurations of one or more HSF-
PFC power supplies are covered in the applicable RA 19-
(X)B Rack Adapter manual.
The MASTER ON LED (amber) goes on under any of the
following three conditions:
• Independent operation.
• Operation in a parallel master/slave configuration
to indicate which unit is the master
• Operation in a parallel master/slave configuration
to indicate that a slave unit is no longer within the
proper specifications for paralleled units. Slave 1
should be optimally adjusted to 40mV less than
master, slave 2 adjusted to 40mV less than slave
1, etc. The maximum allowable difference
between paralleled units is 250mv. The minimum
allowable difference between paralleled units is
25mV. If a slave exceeds these limits, the MAS-
TER ON light goes on.
NOTE: MASTER ON LED not used on 3.3V
model: always OFF.
The following features of the HSF-PFC power supplies
are covered in the applicable Operator’s manual refer-
enced on page 1.
• Parallel Operation
• Forced Current Sharing
• Current Monitoring (Option C and Y only)
• Remote On/Off (option X and Y only)
• Alarms
• Keying of rack adapter slots by voltage
FIGURE 2. HSF -PFC MODELS INSTALLED IN RA 19-7B RACK ADAPTER
(FOUR 50W OR 100W MODELS IN SLOTS 1 TO 4 AND THREE 150W MODELS IN SLOTS 5 TO 7)