Installation Instructions

5.2.3 Length of motor cable
Always dimension the motor cable so that the ohmic losses are less than 5 % of the inverter
power rating.
The permissible length of the motor cable also depends on the quality of the motor cable and
the inverter pulse frequency. The values specified below are applicable for high quality cables,
such as CY100 or similar, and for the pulse frequencies set in the factory.
Pulse frequency (Page 70).
If you set other pulse frequencies, then you must ensure that the EMC category is complied
with on the plant or system side.
EMC-compliant wiring is required in order that the EMC category specified in the following
table is attained.
EMC-compliant installation of a plant or machine (Page 23)
Table 5-2 Permissible cable lengths
Length Inverter, motor cable EMC
25 m
● Inverter with integrated filter (category C2),
● Shielded motor cable
Second environment,
category C2
50 m
● Inverter with integrated filter (category C2),
● Shielded motor cable
Second environment,
category C3
● Inverter without filter
● External category C1 filter
● Shielded motor cable
First environment,
category C1
● Inverter with or without filter
● Shielded motor cable
No EMC category
100 m
● Inverter with or without filter
● Unshielded motor cable
No EMC category
150 m
● Inverter without filter
● External category C1 filter
● Shielded motor cable
● Output reactor
Second environment,
category C2
5.2.4 Establishing connections
Procedure
Proceed as follows to establish the connections:
1. Ensure that the device is in a no-voltage condition and the DC link is discharged.
2. Establish the connections as described in the following sections.
This means that you have established the connections.
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Connecting
5.2 Connecting the line and motor cable at the inverter
Power Module PM230, IP20 / Push-through technology (PT)
Hardware Installation Manual, 08/2016, A5E34331322B AB 47