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Chapter 1. Installation
1 9
Lengthening I/O Cables
Bear in mind that lengthening cables increases noise sensitivity. (The maximum length of
cables is ultimately determined by the environment in which the equipment will be used.)
If you lengthen the cables, follow the precautions below to minimize noise problems.
• Use a minimum wire size of 22 AWG.
• Use twisted pair shielded cables and connect the shield to a
SHLD
terminal on the 6200.
Leave the other end of the shield disconnected.
• Do not route I/O signals in the same conduit or wiring trays as high-voltage AC wiring
or motor cables.
Reducing noise on limit inputs (HOM, CW, & CCW) and trigger inputs
(TRG-A and TRG-B). If you are experiencing noise problems, try adding resistors to
reduce noise sensitivity (see illustration below).
Long Shielded Cable
Add a resistor between the input and +5V (this will lower the input
impedance and reduce noise sensitivity). Use a value between 330
Ω
and 2.2K
Ω
, depending on noise suppression required.
Output Device,
Switch, etc.
Input Terminal
GND
Shield
6200
+5V
Isolated
Ground
Earth
Terminal could be:
HOM, CW, CCW,
TRG-A or TRG-B
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Summary of Contents for Compumotor 6200
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