Installation
4.2 Electrical Installation
Converter with the control units CU240D-2
42
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
Connection thread/length
Clamping range
without inlet
max/min [mm]
Clamping
range max/min
[mm]
Spanner
width SW *
E
Article No.
A
D [mm] C [mm]
M25 x 1.5
7.5
29
20 … 13
16… 10
30 x 33
bg255mstri
M32 x 1.5
8.0
32
25 … 20
20 … 13
36 x 39.5
bg232mstri
4.2.5
Basic EMC Rules
Measures to limit Electromagnetic Interference (EMI)
Listed below are the necessary measures that must be taken to ensure the correct
installation of the Inverter within a system, which will minimize the effect of EMI.
Cables
●
Keep all cable lengths to the minimum possible length; avoid excessive cable lengths.
●
Route always signal and data cables, as well as their associated equipotential bonding
cables, in parallel and with as short a distance as possible.
●
Don't route signal and data cables and line supply cables in parallel to motor cables.
●
Signal and data cables and line supply cables should not cross motor cables; if crossing
is necessary, they should cross at an angle of 90 °.
●
Shield signal and data cables.
●
Route particularly sensitive signal cables, such as setpoint and actual value cables, with
optimum shield bonding at both ends and without any interruptions of the shield.
●
Ground spare wires for signal and data cables at both ends.
●
Route all power cables (line supply cables, as well as motor cables) separately from
signal and data cables. The minimum distance should be approximately 25 cm.
Exception: hybrid motor cables with integrated shielded temperature sensor and brake
control wires are allowed.
●
Shield the power cable between inverter and motor. We recommend shielded cables with
symmetrical three-phase conductors (L1, L2, and L3) and an integrated, 3-wire, and
symmetrically arranged PE conductor.
Cable shields
●
Use shielded cables with finely stranded braided shields. Foil shields are not suitable
since they are much less effective.
●
Connect shields to the grounded housings at both ends with excellent electrical
conductivity and a large contact area.
●
Bond the cable shields to the plug connectors of the inverter.
●
Don't interrupt cable shields by intermediate terminals.
