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 signa l, 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
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