Mitsubishi Electric AJ65BTS-RPH User Manual page 33

(6) Depending on the grounding condition of the system, a high-frequency
noise may occur between the systems. When these systems are
connected through CC-Link communication cables, a communication
error may occur by the mixing of noise into the repeaters.
If the high-frequency noise occurs between the systems connected
through the cables of 10 m (32.79ft.) or shorter, take either of the
measures specified below.
Method1:Connect the systems through cables of 2 mm
FG terminals of the remote station in each system, or across
grounds of the control panel to which the remote station is
grounded).
Method2:Use CC-Link cables of 10 m (32.79ft.) or longer between the
systems.
System 1
Remote station
(To the ground)
Method 1: Use the stronger ground
cable (2mm
Repeater Hub
(AJ65BTS-RPH)
2
or larger).
23
System 2 Control panel which may produce noise
Remote station
Source of high-frequency
noise (Serov, inverter)
System 3 Control panel which may produce noise
Remote station
Source of high-frequency
noise (Serov, inverter)
Method 2: Use the cables of 10m
(32.79ft.) or longer.
2
or larger (across