Epo(Optional) - Santak Castle On-Line Series User Manual

3. Parallel UPS Advantage
This method increase UPS reliability with redundancy structure, 2
paralleled UPS share the load. When one UPS failure, the other
support the load. That the ½ redundancy.
4. Operation Introduction
1) Normal operation need to follow operation guide for single UPS.
2) Turn on parallel UPS:
Turn on UPS with power normal: After main power connection done,
long press
to Online mode
Turn on UPS without main power: Short press each UPS
to make each UPS power on, then long press one UPS
and all the paralleled UPS will go to Battery mode
Note:
Long press means press for more than 1 second;
Short press means press for less than 1 second;

2.7 EPO(Optional)

EPO(Emergent Power Off), it is a green connector lays on the UPS
rear panel, we can shutdown UPS via remove EPO connector in the
event of emergency. The EPO wire connect diagram see below.
①
Pin 1 closed to pin 2, UPS
shutdown immediately.
Pin 3 and pin 4 float.
one UPS and all the paralleled UPS will go
button for
- 17 -
②
Pin 1 and Pin2 always connect.
When pin3 and pin4 disconnect,
UPS shutdown immediately.
button
button