16 VFD66 User Guide
www.johnsoncontrols.com Issue Number: 2
(3) Operation without an external filter is a practical cost-effective possibility in an
industrial installation where existing levels of electrical noise are likely to be high, and
any electronic equipment in operation has been designed for such an environment. This
is in accordance with EN 61800-3:2004 in the second environment, with restricted
distribution. There is some risk of disturbance to other equipment, and in this case the
user and supplier of the drive system must jointly take responsibility for correcting any
problem which occurs.
Figure 4-5 CE Compliance Wiring
• Physically separate the input and output cables.
• All input and output cables should be fully shielded, with the shield securely
grounded. The motor cable shield should be connected to the ground connection.
• Do not run input cables alongside output cables. Do not bundle input and output
cables together.
• The input ground wire should be connected to the ground connection.
• Ideally, the motor cable shield should be clamped directly to the back plate.
• The EMC filter body needs to be fixed to the same grounded metal part (e.g. the
back plate) as the motor cable shield.
*
TB1
EL1 L2
L3
L1 L2 L3
E
EMC
filter
AB
3
4
Input
device(s)
Alarm
device
*
L3/T
L2/S
L1/R
T1/U
T2/V
T3/W
12
* The M5 nuts are provided to connect the shield to ground (earth).
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