Specifications

Page 15 of 17
ALARM CONTACT CONFIGURATION
-X27 OPTION
The alarm contact is configured via jumpers on a removable terminal plug on the back
of the inverter
1. Remove the terminal plug from the inverter by hand or with needle-nose pliers. On
the underside of the plug are screw terminals to set connections. (The terminal plug
can take up to 12GA wire.)
2. Insert a jumper between COIL and INV. (see drawing) When the inverter is on, the
alarm relay will energize.
If it is desired to sense the AC voltage elsewhere in the system such as after a circuit
breaker, remove the jumper between COIL and INV and connect the AC hot from the
point you want to sense to the COIL contact.
3. Connect alarm signal input wire (supplied by operator) to “C” (common) contact.
Connect alarm signal output wire to either NO (normally open) or NC (normally close)
contacts.
OPERATION
When Battery voltage is available to the inverter, the inverter will turn “on” when the
front panel switch is turned “on” OR when the RMT (remote) terminal is connected to
battery negative. When the inverter comes “on” the alarm relay will energize and there
will be continuity between the NC (normally open) and “C” (common) contacts of the
relay terminals.
Inverter AC output will be available from the NEMA 15 terminals in the front (plug) and
at the output terminals in the rear of the inverter (terminals marked INVOUT for AC hot,
NEUTRAL for AC return, and CHASSIS for ground). To shut “off” the inverter the front
switch must be turned “off” AND the remote switch must be in the “off” position.