APC UPS control system manual Maintaining Your UPS

Valid EEPROM 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

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

Battery date: 07/31/99

UPS Name : UPS_IDEN

At this point, you can select any item from 2) to 13) to modify the appro- priate value. You will shown the existing value and prompted for the new values.

We recommend that you change the EEPROM as little as is absolutely nec- essary since it is a somewhat delicate process that has occasionally produced problems (i.e. improper EEPROM values are displayed after the update). Fortunately this seems to be quite rare and was much more likely to occur with the old “batch” like process especially if incorrect values were supplied.

Maintaining Your UPS

If you have your UPS long enough, you will probably have battery prob- lems. Below, you will find some suggestions for replacing batteries. One important note of caution: at least one user purchased one of the non-APC batteries noted below and found out that they would not fit into his unit. This required cutting and soldering and other very undesirable things, so be extremely careful in measuring the batteries including every millimeter of the terminal connections which can cause problems.

Although you can do a hot swap of your batteries while the computer is running, it may not be very satisfactory because the unit will not know that the batteries have been swapped and apcupsd will continue to show Low Battery. To correct this situation, you must do a discharge and recharge of the battery followed by a battery recalibration using apctest. At that point the battery should be calibrated better. As noted below, Carl has

87