Remote On/Off; Remote On/Off By Contact Closure - Xantrex XKW 8-125 Operating Manual

Operation

Remote ON/OFF

Remote ON/OFF
This feature is useful in test applications requiring remote ON-OFF control of the
output. The remote ON-OFF control circuit uses either a TTL compatible or a
12-250Vac (or 12-130Vdc) input to remotely control (disable or enable) the power
supply output. For TTL operation, a logic level signal between pins 14 (positive) and
2 (return) of connector J3 determines the output conditions:
For AC or DC operation, an input of 12-250Vac (or 12-130Vdc) between pins 1
(positive for DC input) and 2 (return) of connector J3 will disable the output of the
supply.
A red LED on the front panel indicates when the shutdown circuit is activated. The
input lines are optically isolated and can therefore be accessed by circuits with a
voltage differential of up to 600Vdc.
Remote
An external relay may be used to operate the ON/OFF control circuit as follows.
ON/OFF by Connect one side of a normally open relay to pin 15 of connector J3 (+12V). Connect
the other side of the relay to pin 14 (TTL Shutdown). Also connect J3 pin 2
Contact
(Shutdown return) to pin 6 (Ground). Using this configuration, the power supply will
Closure
be OFF when the relay coil is energized and ON when the relay is de-energized.
If a normally closed relay is substituted for the normally open relay in the
configuration described above, the power supply will be ON when the relay coil is
energized and OFF when the relay is de-energized.
46
CAUTION
!
The external voltage applied to pins 1 and 2 (Shutdown input and return) cannot
exceed 250V rms with respect to the supply's negative output or the supply may be
damaged.
TTL LOW = OUTPUT ON
TTL HIGH = OUTPUT OFF
Operating Manual for XKW 1kW Series Power Supply