Oldham MX 32 - Internal Relays and Module Connections

6 – Wiring and Electrical Connections
29
Figure 25: 4-20mA detector connected to an analog line
In the case of a mV flammable gas detector connected directly to the MX 32
line, please wire the detector as shown below.
Figure 26: connection of a Wheatstone type gas detector to a Wheatstone type MX 32
Internal alarm relays
The MX 32 has 5 internal relays:
Output
Function
R1
Programmable Alarm Relay
R2
Programmable Alarm Relay
R3
Programmable Alarm Relay
R4
Programmable Alarm Relay
Failure :
(Fault)
Non-programmable common relay, energized, activated upon the presence of a
failure in the MX 32 (detector and/or module, system failure, etc.). The
acknowledgement of this relay is automatic.
I 4-20mA
0V GND
24V Power (24Vdc)