Ground Terminal Wiring; Modbus Rtu Wiring - Honeywell Sensepoint XCD Technical Manual

Sensepoint XCD Technical Manual
The earth screen of the field cable should be 'tied to Earth' or connected to ground at one point only. It
is common practice to adopt a STAR EARTH connection regime where all instrumentation screens are
connected at one common point.
The screen at the other end of the cable should be 'parked' or terminated into a blank terminal.
The following diagrams show how to install the wire into the ground screw of the enclosure.
Loosen the bolt

Ground Terminal Wiring

Internal Ground connection: Utilize the shield of the wiring cable recommended in the wiring instructions.
For connection to this terminal. Twist the shield wire to avoid stray shield wires, Loosen the screw
sufficiently and wrap the wire around the screw in a 'U' shape. Raise the clamp and place the wire
between the clamp and ground base, lower the clamp and tighten the screw to a torque of 6.9 lb-in.
External Ground Connection: If required by local authority, utilize a 4 mm
wire. Loosen the screw sufficiently to enable 'wrapping the wire around the screw in a 'U' shape. Raise
the clamp and place the wire between the clamp and ground base, lower the clamp and tighten the
screw to a torque of 10.4 lb-in.

Modbus RTU Wiring

This is available on Modbus versions only.
Sensepoint XCD supports half-duplex Modbus RTU communications with up to 32 devices using
recommended shield twisted pair wire.
Refer to section12.3.3, Appendix 1 and Appendix 2 for Modbus settings and the Modbus register map.
Type
Modbus
Insert cable
Cable Spec
AWM2464 AWG26~AWG12
Shielded
24
SPXCDHMANEN Issue 15
Fasten the bolt
2
copper, (Stranded or Solid),
Max Length
1,000 meters