TOSHIBA
Starting on DC Power
If no AC power source is available, or if the AC input power is outside of the allowable range for voltage or frequency, the UPS can be started from battery power. The length of UPS operation time on battery power depends on the number of attached battery modules and the amount of load the UPS is supporting. To start the UPS from battery power follow these steps:
Step 1: Make sure the RUN/STOP switch is in the STOP position. If the UPS is being started on DC power because the AC power is out of range, the input breaker must be in the OFF position (figure 1, page 9).
Step 2: Press the “Startup on Battery” button. The UPS will beep indicating that AC power is not available and the Startup on Battery mode has been activated.
Step 3: Switch the RUN/STOP switch to the RUN position. This must be done within 5 seconds of the Startup on Battery mode activation for the unit to startup using batteries.
Once the unit has started, the “On Line” LED will light, indicating that the inverter is running and power is available at the output receptacles. If the RUN/STOP switch is not switched to the RUN position within those 5 seconds, the unit will return to shutdown mode.
Stopping the UPS
There are two ways of turning the UPS off: switching from on line to bypass mode, or completely shutting down.
Option 1: The first option is to place the UPS into bypass mode. Bypass mode means that if there is AC power available, the UPS will route power directly from the input source to the connected loads without any conditioning. The UPS inverter is off during this state, but the attached loads do not lose power during the transition. To place the UPS into bypass mode, switch the RUN/STOP switch to the STOP position. This mode is most often used manually during maintenance and programming operations or automatically upon the occurrence of an internal UPS fault. (For more information concerning bypass mode see appendix E.)
Option 2: The other option is to turn the UPS off completely. This means that in addition to the UPS’s inverter shutting down, all power will be stopped to any equipment attached to the UPS. To shut the UPS down completely switch the RUN/STOP switch to the STOP position. Then switch the input breaker off (figure 1, page 9). Once the input breaker has been switched off, all the LEDs should turn off. (If the RUN/STOP switch is in the RUN position when the input breaker is switched off, the unit will switch to battery backup mode. The unit will continue to run for as long as the available battery reserves can support the connected loads.)
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