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3.
REMOTE MONITORING AND INDICATIONS . A 25 pin D-sub connector has
been provided for remote monitoring and indication. Pin connections are given
below. Pins 2 and 16 are meant to indicate availability of input AC power. Cur-
rent indication on pins 18 & 6 is 0.5mV per Amp. (Shunt ratio 25mV / 50A)
PROTECTIONS
SHORT CIRCUIT PROTECTION : In the event of a short circuit, the PWM controller
will be shut down and the output will drop to near 0 V. The green LEDs will flash.
The unit will reset automatically once the short circuit condition is removed
CURRENT LIMITING : The unit will enter this mode when the load tries to draw
more than the limiting values of currents as shown in the specifications. Under this
condition, there will be loss of voltage regulation and the output voltage will drop. The
"PSM STATUS" LED will, however, remain illuminated, but dimmed. The unit will
reset automatically as soon as the overload condition is removed .
INPUT SURGE PROTECTION : The unit is protected against input voltage surges.
ITEM
NUMBER
ID
1
Pin 2
Black
Pin 16
White
2
Pin 12
Orange Temp Fault Led +
Pin 19
Green
3
Pin 7
Gray
Pin 20
Violet
4
Pin 8
Violet
Pin 21
Blue
5
Pin 9
Blue
Pin 22
Green
6
Pin 10
Green
Pin 23
Yellow PCB 4 Power LED-
7
Pin 11
Yellow PCB 5 Power LED+
Pin 24
Orange PCB 5 Power LED-
8
Pin 25
Red
Pin 13
Black
9
Pin 18
Gray
Pin 6
Blue
5.
FUNCTION
AC 5V 0.25A
AC 5V 0.25A
Temp Fault Led -
PCB 1 Power LED+
PCB 1 Power LED-
PCB 2 Power LED+
PCB 2 Power LED-
PCB 3 Power LED+
PCB 3 Power LED-
PCB 4 Power LED+
DC Volt Output +
DC Volt Output -
DC Current +
DC Current -
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