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TABLE 2. HSP-A/RACK ADAPTER INTERFACE
CONNECTOR PIN ASSIGNMENTS
PIN NO.
NAME
1 - 10
(+)
Positive output
11 - 20
(-)
Negative output
21
-S
Negative error sense input
22
+S
Positive error sense input
23
V ORing
Output voltage prior to ORing diode.
24
VSET
Output voltage setpoint monitor (0 -10V)
25
VRP1
Analog programming input - voltage (0 - 10V)
(VPROG)
26
VRP2
Resistive programming input - voltage (0 - 50k)
27
IPROG
Analog programming input - current (0 - 10V)
28
ISET
Current limit setpoint monitor (0 - 10V)
29
ISHARE
Load share signal bus (0 - 5.5V)
30
IMON
Analog output current monitor (0 - 5.5V)
31
PSS-2
Output status - normally closed contact
32
PSS-1
Output status - normally open contact
33
ACS-2
Source power status - normally closed contact
34
OTS-1
Overtemp status - normally closed contact
35
RC1
Remote inhibit - normally high input
36
OTS-2
Overtemp status - normally open contact
37
PSS-C &
Common contact for output status and Overtemp
OTS-C
status
38
FANRTN
Return for fan (auxiliary) supply
39
RC2
Remote inhibit - normally low input
40
5VAUX
Auxiliary (fan) supply output
41
ACS-1
Source power status - normally open contact
42
ACS-C &
Common contact for source power status and fan
FFS-C
status
43
FFS-2
Fan status - normally open contact
44
FFS-1
Fan status - normally closed contact
45
GND
A-c input voltage - Ground
46
N
A-c input voltage - Neutral
47
L
A-c input voltage - Line
(1)
These signals are referenced to fanrtn (pin 38).
(2)
These signals are referenced to -S (pin 21).
4. CAUTION:
DO NOT repeatedly toggle circuit
breaker as this may damage unit. Set Power ON/
OFF circuit breaker on front panel to ON. If actuator
does not lock when released, wait a few seconds
before trying again. The circuit breaker is "trip-free"
design; if overload exists, contacts cannot be held
closed by actuator. Verify that POWER indicator is lit,
and that all other front panel indicators are not lit.
KEPCO, INC. 131-38 SANFORD AVENUE FLUSHING, NY. 11355 U.S.A. TEL (718) 461-7000 FAX (718) 767-1102
092223
DESCRIPTION OF FUNCTION
(2)
(2)
(2)
(2)
(1)
(1)
www.kepcopower.com email: hq@kepcopower.com
5. Using a DVM, measure voltage across output bus
bars; this voltage is factory set to value shown in Table
1. If necessary, adjust output voltage using V
accessed through front panel.
6. Using DVM, measure voltage across test points V
and COM; it should read 1/10 of output voltage mea-
sured in step 5 above, ±1%.
7. Using DVM, measure voltage across test points I
and COM. This voltage is factory adjusted to 10.0V,
and corresponds to 100% of maximum current. Refer
to Operator manual for adjustment.
(2)
8. Verify that front panel indicators still appear as in step 4
above.
(2)
9. Disconnect sense lines with power supply still operat-
ing (open +S sense line connected to pin 22). Verify
that HSP-A output turns off, and DC FAIL indicator is
now lit along with POWER indicator. (NOTE: At no load
the output voltage will drop slowly.) Turn circuit breaker
off and wait until DC FAIL indicator blinks. Reconnect
sense lines, then turn circuit breaker back on. Verify
that output voltage returns to value measured in step 5
above, and that indicator LEDs appear as in step 4
above.
10. Turn off front panel circuit breaker and remove source
power connection.
3044555
FIGURE 3. LOAD CONNECTIONS, PRELIMINARY
228-1935
TWIST
PINS 1 TO 10 (+)
0.1uF
PINS 11 TO 20 (-)
PIN 21 (-S)
PIN 22 (+S)
PIN 45 (GROUND)
PIN 46 (NEUTRAL)
PIN 47 (LINE)
ELECTRICAL CHECKOUT
trim pot
O
O
MAX
50uF
LOAD
AC
SOURCE
3
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