AndLogicD AND logic equation D
TCS Alarm Trip circuit supervision Alarm
CBOpn Sup CB Open supervision Alarm
Note: The above functions can be assigned to LEDs and AND Logic Equation.
2.5.2 O/P Relay Configuration
All relay contacts can be individually set as self-reset or latching.
The self-reset trip contact remains closed until the fault persists and opens only after fault current
become less than reset value. The latching type contact will close when a fault occurs and will remain
closed even if there is no fault persisting. The contact can be reset by pressing CLEAR key.
The selection of HR/SR type is made by changing bits value from 0 or 1 in O/P RELAY CONFIG menu
setting.
For Self-reset output contact set bit 0
For Latch type (HR) output contact set bit 1.
The bit position for relay contacts is as shown in following table.
RL-4 RL-3 RL-2 RL-1
0 0 0 0 1 is HR type & 0 is SR type
For example, if you select RL-1 to hand reset (latching) type and all other relay self-reset then you
have to select the configuration below.
RL-4 RL-3 RL-2 RL-1
0 0 0 1 1 is HR type & 0 is SR type
2.5.3 O/P Contact Open Time
This timer is used to hold relay contact after executing trip to ensure proper CB opening.
All digital outputs have a separate setting to set the contact open time. This timer is applicable only
when output contact is SR type.
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