Honeywell Midas User Manual page 26

Display Description
Instrument Fault
1FLt
Only
Separate Fault
2Flt
Relays
Combined Fault
CmbF
Relay
Remote control of
nEtr
relays via Modbus/
TCP or LonWorks
Note
The 3 relays onboard the Midas
Modbus/TCP commands (or via LonWorks
cannot be controlled by the Midas
Diagram 4-6. Midas
Relay 1 Relay 2
Alarm 1 Alarm 2
Maintenance
Any Alarm
Fault
Alarm 1 Alarm 2
Relays respond to Modbus or
LonWorks ® holding registers only.
®
unit can be controlled remotely from a separate controller system using
®
itself and only by the remote controller device (PLC, SCADA, etc.)
®
terminal layout and identification
®
J4
+supply
INT EXT
11
10
9
EXT INT
-supply
J5
Relay 3
Instrument
Fault
Instrument
Fault
Any Fault
if the optional interface is used). In this remote mode, the relays
®
4-10
Midas Gas Detector
®
NC
Relay1
J1
NO
NC
Relay2
J2
NO
NC
Relay3
J3
NO
}
8
7
}
6
5
}
4
3
2
+24 V
DC
PWR
1
COM
ON
SW
OFF
RJ-45
See Relay
function
table below
Relays
are user
configurable