HP PowerWise L600/L900/L1250 UPS

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connector wiring scheme

9 pin D-SUB male connector layout 9 pin D-SUB male connector at the UPS

Pin#

Signal Type

Function

1

RS-232 Earth Ground

Signal Common for all RS-232 port signals (earth ground referenced)

2

RS-232 Transmit Output

Serial communication mode - output signal line.

3

RS-232 Receive Input / Shutdown

Serial communication mode - input signal line. Contact Closure mode - shuts down UPS if signal is held high (RS-232 level) for 200 milliseconds while UPS is operating in battery mode.

4

AC Line Fail (normally closed)

Contact Closure mode - opened when AC line fails and UPS is operating in battery mode (breaks connection between Pin#4 and Pin#5).

5

Contact Closure Common / RS-232 Common

Signal Common for all Contact Closure group / RS-232 Signal Common line.

7

Low Battery (normally open)

Contact Closure mode - closed when remaining "on-battery runtime" drops below the under-defined time limit (makes connection between Pin#7 and Pin#5).

9

AC Line Fail (normally open)

Contact Closure mode - closed when in battery mode (makes connection between Pin#9 and Pin#5).

Notes

References

Category:Computer Peripheral Connectors

 

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