Honeywell Midas User Manual page 37

Diagram 4-20. Midas
J4
+supply
INT EXT
NC
J1
NO
11
NC
10 J2
NO
9
NC
J3
NO
EXT INT
-supply 8
J5
7
6
5
4
3
2
+24 V
1
COM
MIDAS
Simplified Internal Schematic
External
Customer-Provided
Power Supply
2
+
+
Internal
Current Source
24 VDC
Power
Loads
-
-
1
to Touchpoint4 4-Wire Connection
®
Relay1
Relay2
Relay3
}
}
}
DC
PWR
Shielded
ON
Cable
SW
OFF
RJ-45
J4
INT EXT
11
4-20 mA
Controlled
10
J5
EXT INT
9
4-21
Midas Gas Detector
®
touch point4
+
24 VDC
Power Supply
-
touchpoint4
Simplified Internal Schematic
1
+
2
24 VDC
signal
-
3