CS1D-BC042D Omron, CS1D-BC042D Datasheet - Page 207

• Manufacturer Part Number: CS1D-BC042D
• Description: CS1D Dual CPU Exp
• Manufacturer: Omron

Specifications of CS1D-BC042D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Wiring Methods
Grounding Long-distance Expansion Racks
172
A difference in potential will occur between remote ground points if more than
one point is grounded on the CPU Rack and Long-distance Expansion Racks
in a CS1 Long-distance Expansion System. This is caused by high-frequency
noise from power lines, potential and phase differences between power lines,
and other factors. To prevent noise from entering on the GR (ground) terminal
as a result of a difference in potential, wire the system as shown below.
CS-series PLC
• Do not share the PLC’s ground with other equipment or ground the PLC
• Connect all of the GR terminals on the Racks and ground them at one
• Short the LR terminals to the GR terminals.
• Use a ground wire of 2 mm
• Insert 1:1 isolating transformers into the power supply lines and do not
to the metal structure of a building. The configuration shown in the follow-
ing diagram may worsen operation.
point only to 100
ground the secondary sides of the transformers.
CS1D PLC
CS1D PLC
GR
GR
LG
LG
Ground
(100
Ground
(100
Other equipment (motor, inverter, etc.)
Other equipment
Other equipment
or less)
or less)
or less.
GR
GR
2
Ground
(100
Ground
(100
min.
or less)
or less)
Section 5-4