Delta RMC101 - Manual (Page 565)

MDT 6.2
Transducer Interface Modules 6-21
Pulse Width Modulated Transducer
The RMC must then convert the counts accumulated during the transducer interrogation to an
ACTUAL POSITION in user-defined Position Units (usually 0.001 inch) for use in the PID control
loop.
See also:
MDT Wiring
MDT Configuration
MDT LED Indicators
MDT Specifications
6.2.2 MDT Wiring
Note: When positive voltage is sent to an axis’s drive, the axis must extend. 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.
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 by your transducers.
RMC Magnetostrictive Transducer Input
Six-Pin Plug-in Terminal Block
Pin Function
1 MDT Axis +
Interrogation
2 MDT Axis -
Interrogation
3 MDT Axis Common
4 MDT Axis + Return
5 MDT Axis - Return
6 Case
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.
The RMC can interface to transducers with either single-ended (TTL) or Differential Line Driver
(RS422) interrogation signals. When wiring RS422 signals, connect both the '+Int' and '-Int'