American Power Conversion POWERCELL user manual PowerChute Software, Computer interface port

6.0 UPS monitoring

6.3 PowerChute® Software

PowerChute software provides complete data protection for most operating systems. This software is a background process that monitors the UPS through a RS-232 serial port on the host. PowerChute offers user notification of impend- ing shutdown, power event logging, auto-restart upon power return and UPS battery conservation features. PowerChute is available for many platforms including Novell, LAN Manager, AppleShare, XENIX, most UNIX-based operat- ing systems, and DEC VAX/VMS.

Caution: Use only factory supplied or authorized UPS monitoring cables!

6.4 Computer interface port

The NETWORK PowerCell computer interface port is diagramed below for reference. Those with technical abilities wishing to use this port in a special application should be aware of the following limitations and capabilities of the interface.

6.4.1Outputs at pins 3, 5 and 6 are

actually open collector outputs which must be pulled up to a com- mon referenced supply no greater than +40 Vdc. The transistors are capable of a maximum non-induc- tive load of 25 mAdc. Use only Pin 4 as the common.

6.4.2The output at Pin 2 will gener- ate a LO to HI RS-232 level upon transfer of the output load to power derived from the UPS’s battery. The pin is normally at a LO RS-232 level.

6.4.3The UPS will shut down when a HI RS-232 level, sustained for 0.5 s, is applied to Pin 1. The UPS responds to this signal, following a delay, only during utility failures.

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