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14. Operation
14.1 Cold Start
Cold Start is the process of starting a UPS up in backup mode in the absence of Utility power.
To cold start the T1000, perform the following steps:
NOTE: If the unit is configured for frequency auto-detect (the default shipping mode), the default out-
put frequency for a cold start is 60Hz.
1.
Ensure
the battery module(s) are plugged in.
2. Ensure the Input/Utility power to the UPS is disconnected.
3. Disconnect the load from the UPS output when performing a cold start. If this is not possible, en-
sure the load does not exceed the rated output of the UPS.
NOTE - Ensure the input voltage is set to less than or equal to the output voltage.
4.
Press (no holding required) the cold start button located opposite the front panel display. It is par-
tially obscured by the handle recess. (Fig. 14-1)
Handle
Recess
Cold Start
Switch
5.
The transition from Cold Start to Online is automatic once the utility power is connected.
NOTE: After starting in Cold Start, if you press START/STOP while still in backup (before utility power
is restored) the unit will go into shutdown.
14.2 EPO and Remote Stop
There are two terminal blocks, designated EPO and Rem. Stop, for connecting switches to the UPS to
allow remotely (100 m) Stopping or Shutting Down the UPS by pressing a switch. (See Fig. 14-2)
EPO (Emergency Power Off)
The EPO is triggered by an external switch.
The EPO terminals provide 208/240Vac (same as UPS output terminals). The external switch
should be rated for a minimum of 300Vac and 300mA.
When the EPO switch is closed, the Input circuit breaker to the UPS opens and all power to the unit is
removed, including backup power from the batteries.
NOTE: EPO operation should be limited to no more than 4 operations per minute, and no more than 24
operations per hour. Exceeding this duty cycle will overheat the EPO circuits.
T1000 Series UPS Installation and Operation Manual – 91074-002
FIGURE 14-1: COLD START SWITCH LOCATION
41
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