APC DP300E Parallel programming/operation, Programming parameters for advanced parallel operation

NOTE:

Common battery pack is a technical possibility. However, APC recommend separate battery pack due to a higher safety degree in con- nection with redundant/parallel operation.

The UPS system is prepared for both solutions.

4.5Parallel programming/operation

Programming parameters for advanced parallel operation

To use the advanced parallel functions the following parameters must be pro- grammed:

1.“Station number”

2.“Highest station address”

3.“Advanced power management”

4.“APM test mode active”

5.“Battery connection”

Description of settings.

1.“Station number”

•Valid station numbers: 1-9 stating the UPS parallel address in the system.

2.“Highest station number”

•Valid station numbers: 2-9 stating the number of UPS’s in the system.

3.“Advanced power management”

•“Disabled”: Advanced power management is inactive.

•“PARALLEL+1”: Advanced power management is activated when the system operates as PARALLEL+1, meaning that one system can be isolated without overloading the remaining systems (N systems/UPS).

•“REDUNDANT+1”: Advanced power management is activated when the system operates as REDUNDANT+1, meaning that one system can be isolated without overloading the remaining systems (N systems/UPS) with one spare system.

4.“APM test mode active”

•“No”: Stand-by time will be 24 hours - on-line time will be 48 hours * N systems.

•“Yes”: Stand-by time will be 1 min. - on-line time will be 2 min. * N systems.

5.“Battery connection”

•“Separate”: Separate battery for this UPS.

•“Common”: Common battery in a parallel system. When this setting is chosen, the highest battery temperature that can be found in the parallelled systems is used (for charge voltage compensating).

Programming guide.

Example with 3 systems in parallel with separate batteries.

•Programme the station addresses 1-3: 1 for UPS 1, 2 for UPS 2 and 3 for UPS 3

•All UPS systems have to be programmed to “Highest station address” = 3.

•If APM should not be tested, “APM test mode active” must be “NO”.

•If a system is isolated due to service the station numbers must be reprogrammed for the remaining active systems starting with number 1 and ending with max. number of active systems. No numbers must be left out in this sequence. Fur- thermore “Highest station address” must be changed to number of active UPS’s in parallel.