Power supply 230 V AC
The sector power supply must be wired to the two terminals marked P
(orange) and N (blue) (Figure 4, ref. E) on the 12 point terminal block for the
power supply card; also see the wiring example on page 11. Protection is
provided by fuses F8 and F9 (160 mA/250 VAC) (Figure 4, ref. C and ref. D).
Power supply 115 V AC
Protection is provided by fuses F9 and F8 (315mA/250 VAC) (Figure 4, ref. C
and ref. D).
Power supply 24 V DC
Must be connected to the terminals marked 0 (grey) and +24V (orange) on the
12 point terminal block for the power supply card (Figure 4, ref. F) as
indicated by the wiring example on page 11. Protection is provided by fuse F7
(2A/250 VAC) (Figure 4, ref. B).
Measurement Channels
The MX 32 controller can be equipped with one or two adjustable and dual
measurement channels (see Figure 7). Three options are suggested at
purchase:
■ MX 32 with 2 measurement channels (dual);
■ MX 32 with 1 measurement channel (dual);
■ 1 extension card (to add on to a 1-channel controller).
The MX 32 controller will automatically recognize the number of measurement
channels installed (display).
Figure 7: the 2 measurement channels for the controller.
Sensors
The sensors must be connected to points C1, C2 and C3 on the 12 point
connector for each channel card, as indicated on the wiring example on page
10.
Wheatstone bridge 3 active wire explosive gas detectors
■ C1: mid-point (signal).
■ C2: detector filament.
■ C3: compensator filament.
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