IAI America PCON-CA - Manual (Page 42)

Chapter 1 Specifications Check
POWER CON
PCON-CA/CFA
34
1.7 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.
Do not share the ground wire with or
connect to other equipment. Ground
each controller.
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 ) or more.
Connect the ground line
together to the main unit
using the fixing screw.
Controller Other
equipment
Controller Other
equipment
Other
equipment
Surge absorber
Relay
coil
Relay coil
R
C
+24V 0V
+24V 0V
+ -
Connect the ground cable using
the tapped hole for FG connection
on the main unit.
M3 x 5 nickeled pan head
machine screw
(enclosure dedicated for
DIN rail fixed type)
Screw fixed type DIN rail fixed type