Delta Controls
Access Door Module
Page 17 of 26
Type 1 EOL Circuit (Normally Closed Contact)
Used to monitor a Normally Closed contact, this EOL supervised circuit will give you a Trouble signal, in
addition to the Normal and Alarm signals, to let you know if the circuit has been shorted (contact bypassed). It
does not give Trouble indication of an Open circuit (wires cut), but it will cause an alarm condition.
Type 2 EOL Circuit (Normally Open Contact)
This EOL Circuit is used to monitor/supervise a Normally Open contact, to indicate Trouble when there is an
Open Circuit (wires cut). A short circuit (contact bypassed) will not indicate Trouble, but will generate an
Alarm condition.
Contact
Door Contact
Voltage Range
Type 1 - Normally Closed Contact
Switch Closed
Switch Open
Circuit Shorted
Door Open
Door Closed
Trouble
1.17 - 3.62
3.63 - 5.00
0.00 - 1.16
10
KOhm
N.C.
2
1
Input
Request to Exit
Door Close
Request to Exit
Trouble
Contact
Door Contact
Voltage Range
Type 2 - Normally Open Contact
Switch Closed
Switch Open
Circuit Open
Door Closed
Door Open
Trouble
0.00 - 1.16
1.17 - 3.62
3.63 - 5.00
10
KOhm
2
1
Input
N.
O.
Request to Exit
Request to Exit
Door Close
Trouble
