Liebert PowerSure Personal user manual Communications, Collector to Emitter

COMMUNICATIONS

The PowerSure™ Personal UPS contains a standard DB-9 receptacle located on the rear of the UPS unit. Several signals are provided on this port and are assigned as follows:

PIN	ASSIGNMENT DESCRIPTION
1	Low Battery (open collector)
2	No connection
3	No connection
4	On Battery Mode Shutdown (5-12 DC)
5	On Battery Mode Shutdown Return
6	Utility Fail / Normally On (open collector)
7	Low Battery (open emitter)
8	Utility Fail (common) (pins 6 & 9)
9	Utility Fail / Normally Off (open collector)
Pin Assignment		Collector to Emitter*

Open Collector

(+)

(-)

Open Emitter

*Maximum voltage and current on pins 1, 6, 7, 8, 9 is 60V DC; 5.0 mA.

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