Honeywell Midas

Midas
®
Gas Detector
4-22
Diagram 4-21. Midas
®
to Touchpoint4 3-Wire Sourcing Connection
touchpoint 4
4-20 mA
Controlled
Current Source
Internal
Power
Loads
J4
INT EXT
J5
EXT INT
11
10
9
MIDAS
Simplified Internal Schematic
2
1
-
+
touchpoint4
Simplified Internal Schematic
1
3
2
+
-
24 VDC
signal
Shielded Cable
RJ-45
8
7
2
3
4
5
6
1
DC
PWR
+24 V
COM
NO
NC
Relay3
Relay2
Relay1
ON
SW
OFF
11
10
9
Analog Current
Loop 4-20 mA
INT EXT
EXT INT
-supply
J5
J4
+supply
J1
NO
NC
J2
NO
NC
J3
PYROLYZER
CONNECTOR
Relay1
}
Relay2
}
Relay3
}