Micom P721, Technical Manual

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User Guide P72x/EN FT/C21
MiCOM P721/P723 Page 29/38
AUTOMAT. CTRL
Output Relays
Heading of the Output Relays submenu.
Function 8765432
1100010
Assigning the corresponding protection function to the
output relays; i.e. to output 3 (RL3)
Setting choice: 1 assigns the output relay; 0 no
assignement
Function 432
010
Submenu for P721.
2.8.5 Latch of the auxiliary output relays (RL2 to RL8)
With the following menu the user can set each output relay as latched or not latched.
A “0” assigned to an output relay means that the relay is not latched. The output relay will be
active when the relevant command will be active; the relay will not be active when the
relevant command will reset.
A “1” setting assigned to an output relay means that the relay is latched. The output relay will
be active when the relevant command will be active; the relay will remain active, if the
relevant command will reset.
The active latched output relays can be reset by a logic input assigned to this function.
Further, the active latched output relays can be reset from the front panel by pushing .
This action is available if the window status Output Relays in OP. PARAMETERS submenu
is displayed.
The alarm string “Latched Relays” appears on LCD and the yellow LED is lighted.
AUTOMAT. CTRL
Latch Output
Relays
Heading of the Latch Output Relays submenu.
Latch 8765432
Relays 0100100
In this example, the output relays set to Latch function
are number 4 and 7 (RL4 & RL7).
Latch 432
Relays 000
Submenu for P721.
2.8.6 Inputs submenu
This submenu makes it possible to assign a single function or multiple automation functions
to each logic input. The following functions are available for mapping to a logic input:
Label P721 P723 Function
Unlatch X X Unlocks latched output relays
Aux 1 X X Assign external information to input Aux1
Aux 2 X X Assign external information to input Aux2
Aux 3 X Assign the input the external information Aux 3
Aux 4 X Assign the input the external information Aux 4
Block Logic 2 X X Blocking logic 2
Start Disturb X X Starting of the disturbance recording function