MultiExact Gas Analyser
5 – Installation and set-up
5.2.3 Fault and range relay connections
WARNING
The fault and range relay connections are separated from the
analyser mains circuits by reinforced insulation. The terminals must
only be connected to circuits that are themselves separated from
mains voltages by an isolation method that provides at least this level
of protection.
The analyser comes with a fault relay and a range change relay as standard. These
can be used to provide an output to your system to indicate a fault within the analyser
or to indicate which range the analogue output is set to (see Section 5.7.1).
1.
Connect the wires in your cable to the screw terminals on the 6 pin connector
provided. Section 2.3 provides information on the rating and size of cable.
2.
Pins 2 and 3 are connected during a fault condition. Pins 1 and 2 are connected
if no fault is present. During a power failure the fault relay will be in a fault
condition.
3.
Pins 5 and 6 are connected if analogue output Range 1 is selected. Pins 4
and 5 are connected if range 2 is selected.
Pin
Use
1
N/O (Fault)
2
COM (Fault)
3
N/C (Fault)
4
N/O (Range)
5
COM (Range)
6
N/C (Range)
Figure 13 – Fault and range relay interface connector
05410001A / Revision 6
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