6–110
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
S4 CONTROLS
CHAPTER 6: SETPOINTS
will maintain Setpoint Group 1, even if the input “SET GROUP 2 ACTIVE” is asserted. Vice
versa, if the “BLK GROUP CHANGE” input is asserted; the relay will not switch from Group 2
to Group 1, even if the input under “SET GROUP 2 ACTIVE” is de-asserted.
The relay will default to Setpoint Group 1, if both the input “SET GROUP 2 ACTIVE” and the
blocking input “BLK GROUP CHANGE” are de-asserted.
PATH
:
CONTROLS > CHANGE SPNT GROUP
SET GROUP 2 ACTIVE
Range: Off, Contact Input 1 to 10, Virtual Input 1 to 32, Remote Input 1 to 32, Logic
Elements 1 to 16
Default: Off
This setting selects an input used to change from Setpoint Group 1 to Setpoint Group 2,
when asserted. If no group change supervision is selected, Setpoint group 2 will stay
active as long as the “SET GROUP 2 ACTIVE” input is asserted, and will revert to Group 1,
when this input is de-asserted.
BLOCK GROUP CHANGE
Range: Off, Contact Input 1 to 10, Virtual Input 1 to 32, Remote Input 1 to 32, Logic
Elements 1 to 16
Default: Off
This setting defines an input that can be used to block changing setpoint groups. When
the assigned input is asserted, changing from one setpoint group to the other one is
blocked.