Commissioning Manual
6FC5397-4EP10-0BA8, 07/2018
111
Electric shock or short circuit due to improper connections
Improper connections have high risks of electric shock and short circuit, which will jeopardize personal safety
and equipment.
• The drive must be directly connected with the motor. It is not permissible to connect a capacitor, inductor or
filter between them.
• The line supply voltage must be within the allowable range (refer to the drive rating plate). Never connect
the line supply cable to the motor terminals U, V, W or connect the motor power cable to the line input
terminals L1, L2, L3.
• Never wire up the U, V, W terminals in an interchanged phase sequence.
• If the CE marking for cables is mandatory in some cases, the motor power cable, line supply cable and
brake cable used must all be shielded cables.
• For terminal box connection, make sure that the clearances between non-insulated live parts are at least
5.5 mm.
• Route signal cables and power cables separately in different cable conduits. The signal cables shall be at
least 10 cm away from the power cables.
•
Cables connected may not come into contact with rotating mechanical parts.
Connecting the cable shields with the shielding plate
To achieve EMC-compliant installation of the drive, use a shielding plate to connect the cable shields. See the following
example of the steps of connecting cable shields with the shielding plate:
â‘ Connect the line supply cable, the power cable, and
the brake cable (available for feed drives only), and
strip the cables where necessary.
â‘¡ Slip the hose clamps over the cable shields and the shielding
plate; tighten the screws to press the cable shields onto the
shielding plate as well as fix the grounding lugs.
Note
The connection diagram above takes the V70 feed drive FSA as an example. It is applicable also to the V70 feed/spindle
drive FSB and FSC. For the V70 spindle drive FSD, the shielding plate is available as an option only. For more information,
see Sec
tion "Shielding plate (Page 33)".
Danger to life due to fire or electric shock when using unsuitable residual current protection devices
The drive can cause a current to flow in the protective conductor.
This current can cause the residual current device (RCD) or residual current monitoring (RCM) to incorrectly
trip (nuisance trip).
In the case of a fault (ground fault), the fault current can contain a DC component, which prevents the
RCD/RCM from tripping, with the risk of subsequent fault or electric shock.
Use only the type B RCD in the supply system for the SINAMICS V70 drive.
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