APC UPS control system manual Output should look something like the following, 184

The output should look something like the following:

apcaccess eeprom

Valid EPROM values for the SMART-UPS 1000

	Config	Current	Permitted
Description	Directive	Value	Values

===================================================================

Upper transfer	voltage	HITRANSFER	253	253	264	271	280
Lower transfer	voltage	LOTRANSFER	196	196	188	208	204
Return threshold		RETURNCHARGE	0	00 15 50 90
Output voltage	on batts	OUTPUTVOLTS	230	230	240	220	225
Sensitivity		SENSITIVITY	H	H M	L L
Low battery warning		LOWBATT	2	02 05 07 10
Shutdown grace	delay	SLEEP	20	020	180	300	600
Alarm delay		BEEPSTATE	0	0 T	L N
Wakeup delay		WAKEUP	0	000	060	180	300
Self test interval		SELFTEST	336	336	168	ON	OFF

The line of interest for you is the Shutdown grace delay, which can be changed using the SLEEP (see SLEEP <set sleep delay>) directive in your apcupsd.conf file. The default value is 20 seconds, but generally, you can set it to 180, 300, or 600 seconds depending on your UPS. See the EEPROM (see Configuring Your EEPROM) this manual for further details on how to change this EPROM value.

If you use the --kill-on-powerfail option, you run the risk of having the computer power cut before the system has shutdown. Even if the grace period is rather long, if something goes wrong in the shutdown, well, it is up to you to decide.

If apcupsd has successfully shutdown your computer and powered off the UPS during a power outage, you can control whether or not your computer is automatically rebooted when the power returns.

The UPS contains two internal EPROM values that determine when it will restore power to your computer after a full power shutdown. They are the RETURNCHARGE (see RETURNCHARGE <min batt charge level>) percentage and the WAKEUP (see WAKEUP <set wakeup delay>) delay. Briefly, the RETURNCHARGE specifies what percentage charge the bat- tery must have before the power is restored. Higher values are recommended in regions where the power goes up and down frequently. The WAKEUP delay is a simple time delay. Most sites will have both of these at zero, or perhaps the RETURNCHARGE set to 15. Please follow the links to the

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