Siemens SINAMICS G220 - Achievable EMC Category and Maximum Motor Cable Length

The temperature monitoring of explosion-protected motors requires short-circuit protection
of the sensor cable depending on the sensor cable length:
• Sensor cable length ≤250m: Short-circuit detection by the OM-SMT
• Sensor cable length >250m: Additional short-circuit protective measures, e.g. separate
routing or special rails
The protective measures must be evaluated in a risk analysis.
4.14.12 Achievable EMC category and maximum motor cable length
Requirement
Reliable and disturbance-free converter operation is only ensured when it is installed in an EMC-
compliant way.
Description
The achievable EMC category is dependent on the motor cable length and the line system
con󹪝guration. The following conditions apply to the permissible application environment.
Application environment Achievable EMC category
C2 C4
4)
Converter with integrated
line 󹪝lter
3)
Converter without in‐
tegrated line 󹪝lter
Cable length Motor ≤ 150m shielded CY cable ≤ 200m shielded
≤ 300m unshielded
Braking resistor ≤ 10m shielded CY cable ≤ 10m shielded
Installation loca‐
tion
Residential environment No No
Light industry and com‐
merce
Yes No
Heavy industry Yes Yes
2)
Line supply Public Yes
1)
No
Non-public Yes Yes
2)
Permissible line system con󹪝guration TN or TT system with groun‐
ded neutral point
Any
1)
Corresponds to IEC61000-3-12, Table 4, for RSC ≥120. The compatibility level for harmonic voltage
distortions at the line connection point must be taken into consideration
2)
Complex, large-scale industrial applications and/or IT supply networks. An EMC plan must be drawn up.
3)
Operation with the default pulse frequency or with reduced pulse frequency
4)
An external line 󹪝lter is required to comply with the requirements relating to CE certi󹪝cation.
Application planning
4.14EMC-compliant installation
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 91