UPS for 480 Vac Grid, User Guide, doc. rel. 4.0
90
Figure 71: Set dc current offset
The Set dc current offset and Calibrate battery current functions should be performed
only if the battery current measurement is not correct. They are generally used only
when current sensors are added to the system.
To set dc current offset:
1.
Operate the UPS without a load and with batteries disconnected.
2.
Perform the "Set dc current offset" function (only if the measured current is not zero).
3.
Connect the UPS to its batteries and to a load and operate the UPS in battery mode.
4.
Measure the actual battery current and correct the controller reading (if necessary) using the
"calibrate battery current" function.
When the system is in operating mode, the battery current value is negative.
8.2.4.2.4.
Set battery current limit value
Use this function to set a limit for the battery output current.
