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Compliance with the EMC and Low Voltage Directives
(1) For programmable controller system
To configure a system meeting the requirements of the EMC and Low Voltage
Directives when incorporating the Mitsubishi programmable controller (EMC and
Low Voltage Directives compliant) into other machinery or equipment, refer to
Chapter 9 "EMC AND LOW VOLTAGE DIRECTIVES" of the QCPU User's
Manual (Hardware Design, Maintenance and Inspection).
The CE mark, indicating compliance with the EMC and Low Voltage Directives, is
printed on the rating plate of the programmable controller.
(2) For the product
Note the following when making this product to conform to the EMC and Low
Voltage directives.
(a) Twisted pair cable
Use shielded twisted pair cables for connecting to the 10BASE-
T/100BASE-TX connectors. For the shielded twisted pair cables, strip a
part of the outer cover and ground the exposed shield section on the widest
contact surface as shown below.
Shielded twisted pair cables
Shield
Refer to (b) for grounding of the shield.
(b) Grounding of shield of shielded cable
1) Ground the shield of the shielded cable as close to the
module as possible to avoid the electromagnetic induction
from ungrounded cables.
2) Take an appropriate measure so that the stripped shield
section can be grounded to the control panel in the largest
area as possible. A clamp may be used as shown below.
In this case, however, mask the contact part when painting
the inner surface of the control panel to allow it to contact
with the clamp.
Shield section
Screw
Clamp
Shielded cable
Paint mask
Note) Grounding by soldering a wire onto the shield section of the shielded cable as
shown below is not recommended. The high frequency impedance will increase
and the shield will be ineffective.
Shielded cable
Wire
Crimp terminal