ABB PCS100 UPS-I - Menu 500 UPS Settings

PCS100 UPS-I User Manual 87
10.3.6 Menu 500 UPS Settings
500 UPS Settings
This menu contains the electrical settings for the UPS functionality.
Parameter:
520 Max Autonomy Period
Function:
Sets the maximum time the PCS100 UPS-I can correct a surge or sag
Access:
Operator
Range:
0 to 60,000. 0 = infinity
Units:
ms
Factory
Setting:
0
Notes:
Prevents the PCS100 UPS-I from supplying power continuously under no load conditions.
Parameter used to meet UL safety requirements for UPS implementations that do not have
an input contactor.
For a PCS100 UPS-I without an ‘SCR off’ detection board this parameter must be set to 15
seconds or less if UL safety requirements are to be met.
Parameter:
521 Walk in Time
Function:
Sets the time period over which the PCS100 UPS-I will softly transition load to a generator
Access:
Tech
Range:
0 to 8,000
Units:
ms
Factory
Setting:
0
Setting up:
Set to an appropriate time to allow the generator to take up the load. For applications with
no generator set to “0”.
Note:
Required for integrating with auxiliary generators.
Parameter:
530 RMS Sag Threshold
Function:
Low RMS voltage deviation threshold below which the PCS100 UPS-I will transfer the load
to the backup energy storage
Access:
Operator
Range:
0 to 200%
Units:
% (base = Parameter 121 Utility Voltage)
Factory
Setting:
90%
Note:
If the input RMS voltage falls below this value the PCS100 UPS-I will transfer to backup
storage. Response time is about one half cycle i.e. 10 ms for a 50 Hz supply or 6.2 ms for 60
Hz.
Setting up:
Set to the lowest supply variation that the load can withstand. If adjusted too fine the
PCS100 UPS-I will switch to the energy storage unnecessarily and there will be less storage
available during critical sags.
Parameter:
531 RMS Surge Threshold
Function:
RMS high voltage threshold above which the PCS100 UPS-I will transfer the load from the
utility to the backup energy storage
Access:
Operator
Range:
0 to 200%
Units:
% (base = Parameter 121 Utility Voltage)