BUTTON RELAY
5) POINT FAIL ALARM CIRCUIT (WXACKNR)
-Whenever any Point fails to set in normal/reverse, then the point indication relay NWKR/RWKR fail to pick up , then WXR OR WXJR(All point indication proving relay) drops, which activate a buzzer and light up an indication on the panel.
- Then the SM acknowledge by pressing point failure acknowledgement button , thereby WXACKNR energies, which stop the Buzzer, but the indication remain ON till the point failure is rectified and indication is obtained.
- WXR is made slow to release, thereby it does not drop when both indication (NWKR/RWKR) are not available during point operation.
5) POINT FAIL ALARM CIRCUIT (WXACKNR)
-Whenever any Point fails to set in normal/reverse, then the point indication relay NWKR/RWKR fail to pick up , then WXR OR WXJR(All point indication proving relay) drops, which activate a buzzer and light up an indication on the panel.
- Then the SM acknowledge by pressing point failure acknowledgement button , thereby WXACKNR energies, which stop the Buzzer, but the indication remain ON till the point failure is rectified and indication is obtained.
- WXR is made slow to release, thereby it does not drop when both indication (NWKR/RWKR) are not available during point operation.
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