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Appendix 2 Communication Port Description 37
E1-20010329-C-1.0
Dry Contact Communication Mode
Port Definition
Pin2 : When the Utility fails, this pin will change from OPEN to CLOSE, it is OPEN in normal state
；
Pin5 : When the battery voltage is low, this pin will change from OPEN to CLOSE, it is OPEN in normal state
；
Pin6 : When +5V voltage has been applied for 1 second, the UPS will shutdown；
Pin4 : GND for signal
；
Pin7 : GND for signal；
Other Pin: No wire connection
Dry Contact Communication Mode can perform the following functions
When the Utility fails, the Utility failure information is provided ;
When the battery capacity is going to be used up, battery low information will be
provided ;
Control the shutdown of UPS.
Relay Communication Mode
Port Definition
Signal
alarm Output signal , summary alarm , non shutdown
alarms only.
failure Output signal UPS fail , will shutdown or transfer to
bypass.
Bypass Output signal, power supplying mode
battery low Output signal, battery mode
shutdown input signal, UPS shutdown command
NC
Utility Fail
NC
GND
Battery Undervolt
OFF
GND
NC
NC
1
2
3
4
5
6
7
8
9
ALARM FAULT
BYPASS
BATT ¡ ¤LOW
SHUTDOWN
12 3 4
56
7
8
9
10
11
12 13 14 15