B&R ACOPOSinverter P84, User Manual

Page: 91 / 405

Installation guide
ACOPOSinverter P84 User's Manual 2.10 91
1.3.18 Electromagnetic compatibility - wiring
Principle
• Ground connections between the frequency inverter, motor and cable shielding must have high frequency
equipotentiality.
•
Use shielded cable with shielding grounded at both ends for the motor cable, the braking resistor (if used),
and the control signal cable. This shielding can be partly in the form of metal pipes or ducts as long as no
interruption of the grounding connections occurs.
• Ensure maximum separation between the power cable (line supply) and the motor cable.
Installation diagram 8I84T200037.01P-1 to 8I84T201500.01P-1 and 8I84T400075.01P-1 to 8I84T401850.01P-1
• Install the shielding of cables 4 and 5 as close as possible to the inverter and ground them:
– Strip the shielding.
– Attach the bare parts of the shielding with stainless steel cable clamps to the metal plate
2
.
The shielding must be firmly attached to the metal plate so that the contact is ensured.
• Install the EMC plate of the control unit 11 onto the EMC plate 2 , as shown in the figure.
•
Install the shielding of cables 7 , 12 and 13 as close as possible to the inverter and ground them:
– Strip the shielding.
– Attach the stripped parts of the shielding with stainless steel cable clamps to the EMC plate flange
of control unit 9 .
The shielding must be firmly attached to the metal plate so that the contact is ensured.
1 ACOPOSinverter P84
2 EMC plate supplied with the frequency inverter
3 Tapped holes for mounting the EMC plate of the control unit
4 Shielded motor cable, shielding grounded at both ends. The shielding
must be uninterrupted; any intermediate terminals must be located on the
EMC-shielded metal enclosures.
5 Shielded cable for connecting the braking resistor (if used). The shielding
must be uninterrupted; any intermediate terminals must be located on the
EMC-shielded metal enclosures.
6 Non-shielded lines for relay contact output.
7 Shielded cable for the connection of the input of the safety function "pow-
er removal". The shielding must be uninterrupted; any intermediate ter-
minals must be located on the EMC-shielded metal enclosures.
8 Metal clips
9 Connection to the protective grounding
10 Non-shielded cables or lines for voltage supply
11 EMC plate of the control unit
12 Shielded cable for connection of the control signal unit. For applications
that require multiple conductors, use cable with a small cross section (0.5
mm²).
13 Shielded cable for connection of the encoder or POWERLINK. The shield-
ing must be uninterrupted; any intermediate terminals must be located on
the EMC-shielded metal enclosures.
Note:
•
If using an additional input filter, it should be mounted as close as possible under the inverter
and connected directly to the mains supply via an unshielded cable. Connection 10 on the
inverter is via the filter output cable.
•
In spite of the high-frequency grounding with equipotential bonding between the frequency
inverter, motor and cable shielding, the PE protective conductors (green-yellow) must be con-
nected to the appropriate terminals on each unit.