Installing
3.3 Installing Power Module
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
42
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Shielding with shield plate:
Shield connection kits are available for all Power
Module frame sizes (you will find more information in
Catalog D11.1). The cable shields must be
connected to the shield plate through the greatest
possible surface area using shield clamps.
Shielding without shield plate:
EMC-compliant shielding can also be implemented
without an optional shield plate. In this case, you
must ensure that the cable shields are connected to
the ground potential through the largest possible
surface area.
Braking resistor connection:
The braking resistor is connected using a shielded
cable. Using a clamp, the shield should be
connected to the mounting plate or to the shield
plate through a good electrical connection and
through the largest possible surface area.
3.3.5
EMC-compliant installation for devices with degree of protection IP55 /
UL Type 12
Inverters with degree of protection IP55 / UL Type 12 (Power Module PM230) can be
installed and operated in a closed control cabinet as well as without a control cabinet.
Cable routing and shielding
●
Line supply cable and motor cable of the inverter should be routed separately away from
signal and data cables. The minimum clearance should be approx. 25 cm
●
All cables should be kept as short as possible
●
Signal and data cables and the associated equipotential bonding cables must always be
routed in parallel with the smallest possible clearance between them
●
Shielded motor cables must be used
●
The shielded motor cable should be routed separately away from the cables to the motor
temperature sensors (PTC/KTY)
●
Signal and data cables must be shielded.
●
Especially sensitive control cables - such as setpoint and actual value cables - should be
routed without any interruption with optimum shield connection at both ends
●
Shields should be connected at both ends to the grounded enclosures through a good
electrical connection and through a large surface area
●
If at all possible, cable shields should not be interrupted by intermediate terminals
●
Cable shields should be retained both for power cables as well as for signal and data
cables using the appropriate EMC clamps. The shield clamps must connect the shield to
the shield support of the inverter through the largest possible surface area and through a
low inductive connection
●
Only metallic or metallized connector enclosures must be used for plug connectors for
shielded data cables (e.g. PROFIBUS cables)
Summary of Contents for SINAMICS G120 CU230P-2
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