User Manual

7 Hardware
7.3.7.1. Quadrature (Q) Module (RMC150)
The Quadrature module for the RMC150 interfaces to RS-422 quadrature feedback devices,
both rotary encoders and linear transducers. The Quad module allows cost effective control of
a wide variety of electric drives as well as electric and hydraulic servo motors.
The 2-axis Quad module generates analog control outputs and interfaces to quadrature
encoders with 5V RS-422 differential signals. Additional high-speed inputs allow for homing,
registration, or positive and negative limits on a per axis basis.
See the Quadrature Fundamentals
topic for details on how quadrature feedback works.
Features
•
Two axes of 5 V RS-422 differential quadrature feedback per module
• Phase A and B (A, A, B, B)
• Index Z (Z, Z)
• 4,000,000 counts/second maximum
• High-speed dedicated Home position input
• 50 µs response to home input
• Positive and negative travel limit inputs
• Digital noise filters on all inputs
• Status LEDs
• Two isolated, ±10 V, 14-bit control outputs per module
• Current output up to ±200 mA with VC2124 converter option
• 1 Fault input per axis
• 1 Enable output per axis
• 2 Inputs per axis for Travel Limits or Registration Inputs
• All discrete inputs are isolated
Part Number
The part number of the MDT module is Qn, where n is the number of Quad modules.
For example, RMC150E-Q1 is an RMC150E with one Quad module. RMC150E-Q3-H1 is an
RMC150E with three Quad modules and one Analog H module.
Setting Up the Quad Module
To set up the Quad module, read the following topics:
Quad Wiring
Quadrature Scaling
Specifications
For general specifications on the RMC150, see the RMC150 Overview topic.
Quadrature Interface
Encoder Inputs
5 V RS-422 differential receiver
Quadrature A, B, Z
Input Impedance
215 Ω termination
Max. Encoder Frequency
4,000,000 quadrature counts/second
ESD Protection
15 kV
RegX/PosLim, RegY/NegLim, Home and Fault Inputs
Input Characteristics
5-24 VDC, sinking (sourcing driver)
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