Micom P721, Technical Manual

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User Guide P72x/EN FT/C21
MiCOM P721/P723 Page 19/38
Alarm tAux3
inhib No
As above with timer 3 (P723 only)
Alarm tAux4
inhib No
As above with timer 4.(P723 only)
Alarm tAux5
inhib No
As above with timer 5 (P723 only).
2.4.5
Submenu INPUTS
A digital input can be configured to be activated either on low level or on high level. Low level
(or high level) depends of the application of the digital inputs.
The user has to set under the Menu CONFIGURATION the auxiliary voltage (AC or DC) for
the digital inputs. This setting is necessary because of the time filtering which is different in
DC and AC. The inversion of the logic input in this menu inverts its allocated function status
in the logic inputs allocation (AUTOMAT CTRL/INPUTS menu). For example: if EL 2 logic
input is 1, then tAux1 = 0 when logic input is 1 and tAux1 = 1 when logic input is 0.
CONFIGURATION
Inputs
Heading of the CONFIGURATION INPUTS submenu.
Inputs 5 4 3 2 1
1 0 1 1 0
P721 (2 inputs) and P723 (5 inputs).
This menu is used to assign active high or low
functionality to each logic input.
0 = active low, 1 = active high
Voltage input
DC
Setting choice: AC or DC power supply for the digital
input. The power supply for any input is the same as the
power supply of the relay.
2.4.6
Submenu OUTPUT RELAYS
CONFIGURATION
Output Relays
Heading of the CONFIGURATION RELAYS
MAINTENANCE submenu.
Fail Safe R. 87654321
0000000
P721 (4 relays), P723 (8 relays).
This menu allows the user to invert each of the output
relay contacts for the de-energised state.
1 = relay activated when driving signal is not active
0 = relay not activated when driving signal is not active
Maintenance Mode
No
Choose if you want to activate the MAINTENANCE
MODE of the relay. If Yes is selected, output relays are
disconnected from the protection and automation
functions.
Relays CMD 8765W4321
000000000
P721 (4 watchdog) and P723 (8
watchdog).
If the MAINTENANCE MODE is activated (set to Yes),
this menu allows the user to activate each one of the
output relay (from RL1 to RL8, W = Watchdog)
1 = relay activated
0 = relay not activated