Rear Panel Operations - Helios RM-PSW2KVA Series User Manual

2-2 Rear Panel Operation:
2-2-1 Ventilation openings:
Do not obstruct, allow at least 3 inch for air flow.
2-2-2 Battery terminals:
Connect to 12V / 24V / 48V battery or other 12V / 24V / 48V power Source.
【＋】is positive,【－】is negative. Reverse polarity connection will blow internal
fuse and may damage inverter permanently.
Alarm relay operation:
Voltage free contacts ( NO, COM, NC )
1) With normal dc supply ON and inverter output OK, and AC by pass supply available:
 NC and COM is closed.
2) With normal dc supply ON and inverter output OK, and AC by pass supply not available:
 NO and COM is closed.
3) Inverter shutdown due to: "OTP, OVP, UVP, OLP, short load"
 NC and COM is closed.
2-2-3 RS-232C:
Connect to remote control unit (option accessory) or connect to computer to
remote control working status.
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