6.4.5 Load sharing type
The controller can be configured to work with different load sharing modules and different ranges for the load sharing signal. This is
controlled by the parameters in 6380 (signal level) and 6390 (load sharing type). The signal level is used to adjust the maximum
output of the load sharing lines. The default range is 0 to 4 V DC, and therefore 4 V DC is the voltage applied to the load sharing line
at 100 % load. If the AGC is connected to another product where the load sharing range is different, then the range can be changed
in 6380.
To be able to adjust the maximum range, set 6391 to Adjustable. The AGC can provide between 1.0 and 5.0 V DC at 100 % load.
Load sharing interfacing to DEIF Uni-line LSU (load sharing unit) and Multi-line 2 version 1 and version 2 can require a 0 to 5 V DC
range. If the load sharing is unequal, check the configuration.
Parameter 6391 can be:
• Adjustable
• Selco T4800
• Cummins PCC
• Woodward SPM-D11
The parameters in 6380 are only used if Adjustable is selected in 6391. For other selections, the AGC modifies the signal level of
the long sharing lines to match the selected controller/load share unit.
6.4.6 Load sharing modules
For interfacing to unspecified load sharing modules, it may be necessary to provide galvanic separation for the load sharing lines.
For proper function, the input impedance of such isolation amplifiers should be high impedance.
6.4.7 Selco T4800 load sharer
T4800 is for kW sharing only (that is, not kVAr sharing).
The signal level is +/-1 V DC, so the AGC automatically adapts to this level. The terminals of T4800 are 12 (com) and 13 (+).
For T4800, the frequency difference of the measured compared to generator nominal is taken into account to prevent unequal load
sharing. This is not user-configurable.
6.4.8 Cummins PCC
The signal level is 0.3 to 2.1 V DC, so the AGC adapts automatically to this level. The terminals (TB3) of the Cummins PCC (for
example PCC3100 and PCC3201) are on connector 8, and the terminals are 51 (kW), 53 (kVAr), 52 and 54 (common). Terminal 55
is a dedicated terminal for the shield of the load sharing cable.
DESIGNER'S HANDBOOK 4189341275A EN Page 114 of 196
To Next Page
Loading...
Need help?
General
