IAI America MSCON - Manual (Page 44)

Chapter 1 Specifications Check
36
1.8 Noise Elimination and Mounting Method
(1) Noise Elimination Grounding (Frame Ground)
(2) Precautions regarding wiring method
1) Wire is to be twisted for the power supply.
2) Separate the signal and encoder lines from the power supply and power lines.
(3) Noise Sources and Elimination
Carry out noise elimination measures for electrical devices
on the same power path and in the same equipment. The
following are examples of measures to eliminate noise
sources.
1) AC solenoid valves, magnet switches and relays
[Measure] Install a Surge absorber parallel with the
coil.
2) DC solenoid valves, magnet switches and relays
[Measure] Mount the windings and diodes in parallel.
Select a diode built-in type for the DC
relay.
Earth Terminal
Class D grounding
(Formerly Class-III grounding:
Grounding resistance at 100: or less)
Copper Wire:
Connect to an ground cable with
diameter 1.6mm (2mm 2 : AWG14) or
more.
Connect using FG connection
terminal on the main unit.
MSCON
0V
R
C
+24V
0V +24V
Relay
coil
Relay coil
Surge absorber
Do not share the ground wire with or connect
to other equipment. Ground each controller.
Controller Other
equipment
Controller
Other
equipment
Other
equipment