42 Chapter 4 Operations
This mode needs restricted module ID:
5 MODULE: ID SET 1, 2,3,4,5
4 MODULE: ID SET 1,2,3,4
3 MODULE: ID SET 1,2,3
2 MODULE: ID SET 1,2
5.3.2 OFF Mode
In the OFF mode the unit is supplied from input and/or bypass and/or battery, but all the power components in the
rectifier, inverter, static switch are off. Only the display and the logic boards are working.
5.4 Battery Management—Set During Commissioning
5.4.1 Normal Function
1. Constant current boost charging
Current can be set up.
2. Constant voltage boost charging
Voltage of boost charging can be set as required by the type of battery.
For Valve Regulated Lead Acid (VRLA) batteries, maximum boost charge voltage should not exceed 2.4V / cell.
3. Float Charge
Voltage of float charging can be set as required by the type of battery.
For VRLA, float charge voltage should be between 2.2V to 2.3V.
4. Float Charge Temperature Compensation (optional)
A coefficient of temperature compensation can be set as required by the type of battery.
5. End of discharge (EOD) protection
If the battery voltage is lower than the EOD, the battery converter will shut down and the battery is isolated to avoid
further battery discharge. EOD is adjustable from 1.6V to 1.75V per cell (VRLA).
6. Battery Low Warning Time
It is adjustable between 3 and 60 minutes. The default is 5 minutes.
5.4.2 Advanced Functions (Software Settings Performed By The Commissioning Engineer)
Battery self-test and self-service
At periodic intervals, 20% of the rated capacity of the battery will be discharged automatically, and the actual load
must exceed 20% of the rated UPS (kVA) capacity. If the load is less than 20%, auto-discharge cannot be executed.
The periodic interval can be set from 30 to 360 days. The battery self-test can be disabled.
Conditions: Battery at float charge for at least 5 hours, load equal to 20~100% of rated UPS capacity
Trigger—Manually through the command of Battery Maintenance Test in LCD panel or automatically
Battery self-test interval: 30~360 days (default setting is 60 days)
5.5 Battery Protection (Settings By Commissioning Engineer)
Battery Low Pre-warning
The battery undervoltage pre-warning occurs before the end of discharge. After this pre-warning, the battery should
have the capacity for 3 remaining minutes discharging with full load. The time is user configured from 3 to 60 minutes.
End of discharge (EOD) protection
If the battery voltage is lower than the EOD, the battery converter will be shut down. EOD is adjustable from 1.6V to
1.75V per cell (VRLA).
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