Micro Motion
®
Model D and DT Sensors Instruction Manual 35
Wiring continued
7. Reattach the core processor housing.
8. Shield and shield drain wire(s) should not be grounded at the
transmitter.
• For wiring at the transmitter, see the transmitter Quick Reference
Guide (QRG).
• If you are connecting to an MVDSolo with MVD Direct Connect
™
I.S.
barrier supplied by Micro Motion, the barrier supplies power to the
core processor. Refer to the barrier documentation to identify the
terminals at the barrier.
• If you are connecting to an MVDSolo without I.S. barrier:
- Connect the VDC wires from the core processor (see figure on
page 36) to an independent power supply. This power supply must
connect only to the core processor. A recommended power supply
is the SDN series of 24-VDC power supplies manufactured by
Sola/Hevi-Duty.
- Do not ground either connection of the power supply.
- Connect the RS-485 wires from the core processor (see figure
below) to the RS-485 terminals at the remote host. Refer to the
vendor documentation to identify the terminals.
Power supply +
(Red wire)
Power supply –
(Black wire)
RS-485A
(White wire)
RS-485B
(Green wire)
Core processor housing internal ground screw
• For connections to earth ground when sensor cannot be grounded via
piping and local codes require ground connections to be made internally
• Do not connect shield drain wires to this terminal
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