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52 Installation Guide APC Silcon 240-320kW 480V UPS
990-4049
Programming
5.3 Programming Parameters for Advanced Parallel Operation.
To use the advanced parallel functions the following parameters must be programmed:
1. “Station number”
2. “Highest station address”
3. “Advanced power management”
4. “APM test mode active”
5. “Battery connection”
5.3.1 Description of Settings.
1. “Station number”
• Valid station numbers: 1-9 stating the UPS parallel address in system.
2. “Highest station number”
• Valid station numbers: 2-9 stating the number of UPSs in system.
3. “Advanced power management”
• “Disabled”: Advanced Power Management is inactive.
• “PARALLEL+1”: Advanced Power Management is activated when the system operates
as PARALLEL N+1, meaning that one system can be isolated without overloading the
remaining systems (N systems/UPSs).
• “REDUNDANT+1”: Advanced power management is activated when the system
operates as REDUNDANT N+1, meaning that one system can be isolated without
overloading the remaining systems (N systems/UPSs) with one spare system.
4. “APM test mode active”
• “No”: Stand-by-time will be 24 hours - on-line time will be 48 hours. (xN systems).
• “Yes”: Stand-by-time will be 1 min. - on-line time will be 2 min. (xN systems).
5. “Battery connection”
• “Separate”: Separate battery for this UPS.
• “Common”: Common battery in a parallel system.
5.3.2 Programming Example
Example with four systems in parallel with separate batteries.
• Program the station addresses 1-4: 1 for UPS 1, 2 for UPS 2, 3 for UPS 3, and 4 for UPS
4.
• All UPS systems have to be programmed to “Highest station address” :4.
NOTICE!
“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
compensation).
NOTICE!
Common battery pack is a technical possibility.
However, APC recommends separate battery pack due to a higher safety degree in connection
with redundant/parallel operation.
The UPS system is designed for both situations.