C650 & C650R User
Manual Page 22
4.2
WIRING FOR PARALLEL SIGNAL CABLE
Parallel signal cable connection diagram:
Remove the cover of ‘parallel box’, then connect each UPS one by one with the ‘parallel cable’, make sure the
cable is screwed to the parallel port tightly.
It is recommended to lock the ‘parallel cable’ (as above) for preventing the parallel ports from suffering an
unexpected pulling force and causing the parallel system fault.
4.3
PARALLEL SYSTEM OPERATION
1.
Ensure the output breakers of each UPS is open then turn on the input breakers for the parallel UPS.
2.
Press the button continuously on one UPS of the system, then the system will start to turn on and enter line mode.
3.
Regulate the output voltage of each UPS separately, and check if the output voltage difference is less than 0.5V
among the parallel system. If the difference is more than 0.5V, the UPS need to be calibrated.
4.
If the output voltage difference is less than 0.5V, press button continuously on one UPS of the system and the
system will turn off. Turn off the input breakers to let UPS shut down. Then switch on the output breakers for all the
UPS.
5.
Turn on the input breakers for the parallel UPS. Pressing the button continuously for one UPS of the system, then
the system will start to turn on and enter line mode and the system will work normally in parallel.