Wiring; Minimizing Noise Interference - Epson RC700 Manual

2. Hardware
SVON（
Board

2.4 Wiring

2.4.1 Minimizing Noise Interference

Follow guidelines listed below when connecting a PG board to a drive:
12
Servo ON
）
Minimize noise interference by using the wiring recommendations as described in
the drive manual.
Use a noise filter on the primary power supply for EXTV/EXTVGND and separate
between the primary and secondary wiring by at least 200mm.
For EXTV/EXTVGND and the instruction signals for using twisted pair (as indicated
in the circuit diagram in the previous "Input and Output Circuits"), be sure to use
twisted pair cables.
Use shielded twisted pair cable for connecting the PG board to the drive.
Follow the drive manual and the manufacturer's instructions for shielding.
Keep the wiring between the PG board and drive as short as possible (within 1.5 m)
and position them to be separated from possible noise sources as much as possible.
For the load to be used in the controller's (Control Unit's) I/O, whether a relay or
solenoid, make sure to use one with surge suppressor. Install a diode (or such) on
the Load L side where there is no surge suppressor.
For such peripheral equipment as a conveyor, switching the rotating direction (start,
forward, reverse) of an AC motor (an induction motor, a 3-phase induction motor,
etc.) requires an appropriate spark suppressor between lines. The closer the
suppressor is to the motor, the more effective the noise suppression.
EXTV
SVON
Output Current
Maximum
70 mA
(Vce=under 2 V)
EXTVGND
Drive
RC700 / RC90 option PG motion system Rev.2
R
External power
24 V
supply