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5.4.2 Option Switch 2
Option Switch 2 functions differently for different versions of the UPS.
■ 100 Vac version
No function; not used.
■ 120 Vac version
The UPS’s factory-set input voltage limits for on-line and SmartBoost
operation are centered on the nominal input voltage of 120 Vac (see also
Sec. 9.1). When Option Switch 2 is in the on (down) position, the upper and
lower transfer voltages are lowered by 4% and centered on a nominal input
of 115 Vac. This is useful where nominal input voltage is 110 to 115 Vac.
■ 220/230/240 Vac version
The UPS’s factory-set on-battery output voltage and input voltage limits for
on-line and SmartBoost operation are designed for use in regions where the
nominal line voltage is 220 to 230 Vac. When Option Switch 2 is set to the
on (down) position, the upper and lower transfer voltages are raised by 4%
and centered on a nominal input of 240 Vac. In addition, the on-battery
output voltage is increased to 240 Vac.
5.4.3 Option Switch 3
When Option Switch 3 is set to the on (down) position, the UPS’s audible
alarm is disabled for the first 30 seconds of on-battery operation. This
function is useful where brief power interruptions are frequent and cause
the alarm to become annoying.
5.4.4 Option Switch 4
No function; not used.
5.0 Operation
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