DOD Technologies ChemLogic 1 - Appendix B - I;O Connection Detail

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DC-ITD-CL1andCL2MAN01-2018.A www.dodtec.com
NOV 2018 815-788-5200
CL1 & CL2 Manual
Appendix B – I/O Connection Detail
14-Pin Cl1/Cl2 I/O Connector
Figure B.1
Pin
Description
Usage
A
System Fault
Normally Open
B
System Fault
Common
C
System Fault
Normally Closed
D
Gas - Alarm Level 1
Normally Closed
E
External Fault Alarm Reset
Momentarily connect to pin N for reset
F
Gas - Alarm Level 1
Common
G
Gas - Alarm Level 1
Normally Open
H
4-20 ma
Positive (500-ohm max impedance)
J
Ground
K
4-20 ma
Negative (500-ohm max impedance)
L
Gas - Alarm Level 2
Normally Closed
M
Gas - Alarm Level 2
Common
N
External Fault Alarm Reset
Momentarily connect to pin E for reset
P
Gas - Alarm Level 2
Normally Open
NOTE: The System Fault relay is always energized except when a fault is detected. The alarm fault relays are
configured for energized or de-energized on the Setup Menu.
NOTE: If the “Positive Pressure Sample Option” is installed, pins L,M,&P can be used to control a solenoid
valve that will activate whenever the pump is not powered