SurgeX SX-20NE-RT - Manual (Page 2)

Remote Control Connections
CAUTION: Do not repeatedly turn the unit off—on—off—on with a heavy
load connected. The ICE™ circuitry absorbs the inrush energy each time the
unit is turned on and may overheat if this is done too many times in a short
period of time. Wait one minute between repeated turn-ons.
Control of the 120V AC power can be accomplished by using a switch (contact
closure), another SurgeX product such as the SX2120-SEQ, or by an applied
voltage (5 to 30 volts dc). When using a switch, choose a switch with gold contacts
for the best long-term reliability. Connections are made to the green terminal block
on the printed circuit board at the top of the unit. Never solder (tin) wires before
inserting in a terminal block – solder creeps and you will eventually have loose
connections!
Either:
• Connect switch or relay contacts to the two terminals labeled CONT CLOS.
Or:
• Connect an applied DC voltage with the positive connected to APPL V+ and
the negative connected to APPL V-.
Indicator LED Connections
Two optional LED outputs are available. One indicates that AC power is applied
to the SurgeX, and the second indicates the remote turn-on status. 10mA of current
is available for each LED, but you must use a series resistor for each LED. For
most LEDs a 1K resistor will provide suitable brightness. If you need less
brightness use a larger value of resistor, and if you need more brightness use a
smaller value of resistor. Connections are made to the green terminal block near
the top of the unit. Be sure to observe the polarity of the LEDs before connecting
the wires. LEDs will not illuminate if the + and – are reversed.
• Connect the Power LED to PWR LED+ and PWR LED-
• Connect the Remote Status LED to REM LED+ and REM LED-