Delta MMC120 User Manual download pdf (Page 18)

Preparing For Installation MMC120 Linear Motion Control Module

18 Delta Computer Systems, Inc. 360/254-8688

PREPARING FOR INSTALLATION

Wiring Notes

Use shielded twisted pairs for all connections to inputs and outputs. Route the transducer wiring separate from

other wiring.

You must provide the power supplies needed for your transducers.

Drive Outputs

When wiring the system, it is important that the drive extends and transducer counts increase when a positive

voltage is sent to the drive. The extend direction is defined as the direction that causes the transducer to return

increasing counts. The extend direction of a magnetostrictive transducer is away from the head.

Magnetostrictive Transducer Wiring

NOTE: The following example schematics do not include transducer pin numbers, color codes, or power supply

requirements, since these vary among different transducers. To determine your power supply needs and

connector pinouts or cable color codes, consult your transducer documentation.

The MMC120 can interface to transducers with either single-ended (TTL) or Differential Line Driver (RS-

422) interrogation and return signals. With RS-422 signals, connect both the '+Int' and '-Int' between the

transducer and the MMC120 for the interrogation signal, and connect both the '+Ret' and '-Ret' between the

transducer and the MMC120 for the return signal. Connect the transducer DC ground to MDT Common.

For single-ended transducer with positive interrogation, connect the transducer '- interrogation in' wire to the

MDT Common pin and the transducer '+ interrogation in' wire to the '+ Int' pin. CONNECT NOTHING TO

THE '- INT' PIN OF THE MMC120. Connect the transducer return plus wire to the '+' return pin on the

MMC120 and the transducer return common wire to MDT Common on the MMC120. CONNECT

NOTHING TO THE '- RETURN' PIN OF THE MMC120.

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Delta MMC120 User Manual Page 18