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OPTION SWITCH SETTINGS
On the back of your UPS is a bank of option switches (6) with a removable
plastic cover. These switches determine transfer levels and operating frequency.
Slide the switches to the left to turn them OFF, to the right to turn ON. Turn OFF
equipment and UPS and unplug the UPS prior to changing switch settings, or the
UPS will ignore the new settings. Replace the plastic option switch cover.
Option Switch 1: 50/60 Hz Select – When OFF, this switch sets UPS for 60 Hz
utility. Output in backup mode will be 60 Hz. When ON, the switch sets UPS for
50 Hz utility and output in backup mode is 50 Hz. The switch must match the
utility frequency or the UPS will not start. The factory setting is 60 Hz.
Option Switch 2: High Line Transfer –
250VA model: When ON, this switch transfers the UPS to battery operation
when the utility voltage reaches 135 VAC. When OFF, the UPS will not
transfer to battery. Factory setting is ON.
400/600VA models: You may select at which voltage the UPS will transfer
to battery operation when it encounters a high utility voltage. The ON
position transfers the UPS to battery operation at 135VAC; the OFF position
transfers at 140VAC. Factory setting is 135 VAC.
Option Switch 3 & 4: Low Voltage Transfer Select – Low voltage transfer is
the voltage level at which battery operation starts. You may set the low voltage
transfer of the UPS to 90V, 95V, or 100V. The factory setting is 95V. This option
reduces excessive battery usage in brownout conditions. Make sure your
computer equipment can operate at 90 VAC before selecting the lowest limit
(most will). Refer to the tables below to change switch settings:
Option Switch 5: Line Neutral Reverse Alarm – When ON, this switch enables
the L-N reverse alarm, which detects wiring faults. When OFF, the alarm is
disabled. The factory setting is ON.
BATTERY TEST BUTTON
The Battery Test Button (5) on the 400 and 600 VA models tests the condition of
the battery. If the charge is sufficient, the UPS lights the Battery Light (2), runs
on battery power for 15 seconds, then returns to utility power. If the battery fails
the test, the Check Light (3) illuminates and the UPS immediately returns to utility
power. The Check Light remains lit while on utility power. A battery in
unacceptable condition requires recharge or replacement of the battery.
Pressing the Battery Test Button (5) also silences alarms.
250 VA MODEL
VOLTAGE SWITCH #3 SWITCH #4
100V ON N/A
95V OFF OFF
90V OFF ON
400/600 VA MODELS
VOLTAGE SWITCH #3 SWITCH #4
100V OFF N/A
95V ON OFF
90V ON ON