4-3 Signal diagram
Heartbeat output makes a 0.33 Hz signal as a heartbeat signal
Power-up
Zero
One
More
Suspicious
Heartbeat
Power ON
Output Signal Timing
Door1
Close
(Activation)
AIR
Zero
One
More
Suspicious
Authorization
Door2
60 to 120 sec
1 sec or less
Open
2 sec
1 sec
Close
Door1 close
48
Starting up complete
Close
Time
Open
Close
Time
Door2 close