User Manual

7 Hardware
For example, RMC150E-M1 is an RMC150E with one MDT module. RMC150E-M3-Q1 is an
RMC150E with three MDT modules and one Quadrature module.
Supported Transducers
The following tables summarize the major transducer options supported by the MDT
module:
MDT Options
Value
Types
Start/Stop (S/S)
Pulse-Width-Modulated
(PWM)
Count Range
32 bits
Wiring
Differential, 5 V, RS-422,
Single-ended 5 V
Interrogation
Modes
External. Notice that internal
interrogation is not
supported.
MDT Count
Rate
120 MHz
Blanking Period
The RMC150 has a blanking period options of 5 µsec (default) and 21 µsec. Some older
transducers, such as Temposonics I and II with neuter outputs, require the longer
blanking period. For more details, see the MDT Fundamentals and MDT Blanking Period
topics.
Setting Up the MDT Module
To set up the MDT module, read the following topics:
MDT Wiring
MDT Scaling
Specifications
For general specifications on the RMC150, see the RMC150 Overview topic.
MDT Interface
Axes
Two per module
Inputs
Two RS-422 differential (can also be used single-ended)
Outputs
Two RS-422 differential (can also be used single-ended)
ESD Protection
15 kV
Resolution
0.001 (25.4 µm) in Start/Stop; 0.0001 in (2.54 µm) PWM
Count Rate
120 MHz
Control Outputs
Range
±10 V @ 5 mA (2 kΩ or greater load)
(For current output, use the VC2124 accessory:±10 mA to
±200 mA in 10 mA steps)
Tolerance
At 10 V: +200mV, -100 mV
At 0 V: ±50mV
At -10 V: +100 mV, -200 mV
Resolution
12 bits
Output Isolation
500 VAC
Overload Protection
One-second short-circuit duration
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