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