Paral-1& Paral-2
—
parallel communication port
Parallel communication cables are required to connect UPS each other when UPSs
operation in parallel. Please refer to section 2-6for detail connections.
Switch—the switch for terminal resistor of parallel communication
To ensure good parallel communication quality, please set the switch of the two
farthest UPS to the “ON” position. Please refer to section 2-6for detail.
HMI—communication port for control panel
This port connects to the LCD display and control panel.
H↔U—communication selector
This switch is to select HMI or USB port. Please ensure this switch on “H” position
for ensure HMI port is workable.
USB
This port is for service only.
LED Status Indictors
Normal
:The UPS is normal.
Alarm
:The UPS has some abnormal conditions.
EPO-- Emergence Power Off
This EPO contact allows you to turn off the UPS in an emergency. Short these
contact to turn off the UPS immediately.
Backfeed Trip
The UPS provide a backfeed protection contact to trip the external
electromechanical device for isolation from the power circuit. The backfeed
protection is for ensuring personnel safety against any risk of accidental energy
return to the input circuit. It imposes the automatic opening of an switching device
in case of a malfunction of the static switch.
MBP Det.
MBP Detector is used for MBP auxiliary from bypass unit. Aux has to be NO with
MBP OFF. Please make sure that MBP Det. works normal after installation.
34
192321262008007
