VCG202/EN M/H11
Technical
The relay will only respond to the commands via serial port if link SD2=1.
Setting SD2=0 inhibits all remote commands over the serial port.
The following cell locations are allocated to store three levels of loadshedding/boosting in
the CONTROL column of the menu system.
LEVELS Cell Location
Level 1 030E
Level 2 030F
Level 3 0310
The following truth table then applies:
COURIER COMMAND SELECT
Level 0 None
Level 1 Select level 1 setting
Level 2 Select level 2 setting
Level 3 Select level 3 setting
7.6.2 Local control of loadshedding/boosting
Local loadshedding/boosting control of the relay are via using the opto inputs assigned in
input mask. The three levels can be selected by energising one of the three opto input
channels as required by the user. If more than one opto inputs are energised at any one
time then the relay acts on the setting nearest to 0.
For example, if
Level1 = 3 % and Level 2 = +9 %, then level 1 is selected OR
Level1 = 3 % and Level 2 = –3 % then level 2 is selected. The –ve setting has priority
over the +ve setting if both values are equally nearest to 0.
The following cell locations are assigned in the input masks.
LEVELS Cell Location
Level 1 0707
Level 2 0708
Level 3 0709
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