38 Appendix 2 Communication Port Description
E1-20010329-C-1.0
Connection alarm Signal Pin . 1/2/3 （normally open /common
normally close）
failure Signal Pin . 4/5/6 （normally open/common
/normally close）
Bypass mode signal Pin . 7/8/9 （normally open/common
/normally close）
battery low Signal Pin . 10/11/12 （normally open/
common / normally close）
Shutdown Signal Pin .14/15th Pin（short circuited
normally , UPS shutdown when open
circuit ）
Connection of relays alarm Signal Relay In normal state, Pin . 2/3 are short
circuited, Pin . 1/2 pins are short
circuited when alarm is activated .
failure Signal Relay In normal state, Pin . 5/6 are short
circuited, No. 4/5 pins are short
circuited when signal is activated.
Bypass mode Signal Relay In normal state, Pin . 8/9 are short
circuited, Pin .7/8 are short circuited
when signal is activated.
battery low Signal Relay In normal state, Pin . 11/12 are short
circuited_, Pin . 10/11 are short
circuited when signal is activated .
Shutdown Signal Relay Invalid when pin 14/15 are open
circuit , UPS will shutdown .
Relay Contact Capacity