USB
This port is for service only.
Switch—the switch for a terminal resistor for 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 2-7 for detail.
LED Status Indictors
Normal: The UPS is normal.
Alarm: The UPS has an abnormal condition(s).
EPO-- Emergency Power Off
This EPO contact allows you to turn off the UPS in case of emergency. Short this contact to
turn off the UPS immediately.
Backfeed Trip
The UPS provides a backfeed protection contact to trip the external electromechanical
device for isolation from the power circuit. The backfeed protection is to ensuring
personnel safety against any risk of accidental energy returning to the input circuit. It
imposes the automatic opening of an switching device in case of a malfunction of the static
switch.
MBP Det.
If an external manual bypass switch has been installed with UPS system, this detector must
be connected to the auxiliary contact of the external manual bypass switch.
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