Powerware 5075 kVA operation manual Housekeeping

•The UPS logs a successful notify to the event log when the remote computer or modem answers and leaves an event message with the following format.

nnn<space>mmm<LF><CR> where:

nnn	= The telephone number of the UPS (20 characters maximum)
<space>	= ASCII space character (0x20)
mmm	= Event message for notice or alarm (40 characters maximum)
<LF>	=	ASCII line feed character (0x0A)
<CR>	=	ASCII carriage return character (0x0D)

If calling a pager service and the service answers, the UPS delays momentarily and then dials the pager number. Refer to the “Configuring the Modem to Call a Numeric Pager” section of this chapter for more information on configuring a modem to dial a pager.

NOTE: Because the pager service is not a modem, the UPS does not know if its message got through; therefore, the UPS continues to call the pager service for a programmed number of times or until a call-in reset is performed.

An unsuccessful notify event is logged into the UPS event log for each attempted call out.

If the phone number that the UPS is calling does not answer, the UPS delays for a time period (programmable from 1 to 60 minutes) and then reattempts the call. If answered, the UPS ceases further attempts to call. Each call group can be programmed for a separate number of attempts to call and delay between calls. Each unsuccessful attempt to call causes an unsuccessful notify event to be logged into the UPS event log.

If both call groups are active, the UPS alternates between calling the groups. The Call Out process can be terminated at any time by calling into the UPS and sending the reset command (press and hold [CTRL] and press [R]) or by turning the key switch on the front of the UPS.

Housekeeping

When the modem is idle, the UPS “pings” (tests for connection) the modem by sending an “AT” to the modem at five-minute intervals. If the modem does not respond correctly, by sending either “OK” or “0” to the UPS, the UPS attempts to re-initialize the modem. After a successful re-initialization, the UPS returns to the Housekeeping function. If the re-initialization is unsuccessful, two more attempts to re-initialize the modem are made before the UPS disables all Call Out attempts. Re-initialization is then attempted every ten minutes or until the communications mode is changed by the UPS front panel controls (or the modem re-initializes). For each unsuccessful attempt, the UPS logs a modem failure event into the event log. When the modem link is confirmed, the UPS communications resume normal operation and Call Out is enabled.

106 Powerware BPIII Harsh Environment UPS 50--75 kV Installation and Operation

164291261 Rev. F 111503