The table that follows shows the wiring connections between the XMT-SI and DMP-SI Probes and the LX4
Console:
Connection Specification
MR1 Barrier Input
MR3
Safety Barrier Input (up to eight [8] probes)
Red (+ 12V) - Terminal 1
Brown (RS485A) - Terminal 2
Blue (RS485B) - Terminal 3
White (-0 V) - Terminal 4
MR4
Safety Barrier Input (up to eight [8] probes)
Red (+ 12V) - Terminal 1
Brown (RS485A) - Terminal 2
Blue (RS485B) - Terminal 3
White (-0 V) - Terminal 4
If a site installation has more than 16 probes/tanks you must use an external MagDirect barrier connected to
the console MR1 or CN7 (see below) terminal blocks. Each MagDirect barrier can hold up to eight (8) probes.
See the Wiring Diagram section for more information.
7.2 Connection to the XMT Explosion-proof Probe
You can install up to 32 XMT probes on CN7.
The XMT model explosion probes must be connected in parallel to the console and directly to the connector
CN7. It does not go through the intrinsically safe barrier (the barrier is not applicable in this installation).
The table that follows shows the wiring connections between the XMT Probes and the LX4 Console main
board CN7 terminal block:
M2050-EU Rev.: 1 Dover Fueling Solutions
Page 20
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