Clary SP Series-Model PD - Manual (Page 25)

T H E C O N T I N U O U S P O W E R C O M P A N Y
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The unit will start up similarly to normal AC start-up except the Alarm LED will continue to blink. It will
now operate as described above in battery operation.
3.6 Optional Communication Procedure
The UPS system includes additional interfaces for communications to host computers or other similar
devices. Their use is optional, but allows for remote monitoring and control of the power system.
Effective utilization of these capabilities will enhance the reliability of the traffic power system.
There are two DB-9, subminiature, female connectors. These are provided for communications links to
a computer or sophisticated monitoring device. These two connectors are labeled and used as:
o SIGNAL provides open collector type contact closures that signal AC Input Fail/Timer, Low
Battery and UPS ON conditions.
o RS232 is a true communications signal port. This port connects to standard PC-type serial
ports.
See Figure 4 for Pin assignments.