Instruction Manual

RMC100 Startup Appendix A: Wiring

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Wiring the MDT Feedback Module

RMC MDT Six-Pin Plug-in Terminal Block Pin-out

Pin Function

1 MDT Axis + Interrogation

2 MDT Axis - Interrogation

3 MDT Axis Common

4 MDT Axis + Return

5 MDT Axis - Return

6 Case

The RMC can interface to Magnetorestrictive Displacement Transducers with either

single-ended (TTL) or Differential Line Driver (RS422) interrogation signals.

NOTE: The following example schematics do not include transducer pin numbers,

color codes, or power supply requirements, since these vary between different

transducers. To determine your power supply needs and connector pin-outs or cable

color codes, consult your transducer manufacturers’ documentation.

RS422 signals

• Connect both the '+Int' and '-Int' between the transducer and the RMC for the

interrogation signal, and the '+Ret' and '-Ret' between the transducer and the

RMC for the return signal.

• Connect the transducer DC ground to MDT Cmn.

Single-ended (TTL) transducers with positive interrogation

• Connect the transducer '- interrogation in' wire to the ‘MDT Cmn’ pin and the

transducer '+ interrogation in' wire to the '+ Int' pin.

• CONNECT NOTHING TO THE '-Int' PIN OF THE RMC.

• Connect the transducer return plus wire to the '+Ret’ pin on the RMC and the

transducer return common wire to ‘MDT Cmn’ on the RMC.

• CONNECT NOTHING TO THE '-Ret' PIN OF THE RMC.

Index/wiring/MDT