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Siemens AG 1998 All Rights reserved 6SN1197–0AA00 02.98 Edition
SIMODRIVE 611 (PJ)
EMC measures
The screens of pre–assembled original manufacturer’s cables are automatically
connected when the connector is inserted.
Exceptions:
– Setpoint cable from an analog NC.
In this case, the screens of the setpoint pairs must be connected to the
upper side of the module. The threaded holes can be used for this pur-
pose. (M5x10/3 Nm).
– Drive bus cable from SINUMERIK 840C.
In this case, the screen is connected to the above mentioned threaded
hole using the clamp provided.
– Drive bus– and equipment bus extensions for two–tier designs.
In this case, the screens at each end of the cable must be connected to
the above mentioned threaded holes using the clamps provided.
– Motor power cables
The screens of the motor power cables are connected to the screen con-
necting plates (accessories) of the modules using the clamp connectors
provided.
Refer to P.1-52 for further measures.
In order to ensure a good connection between the front panel and the housing,
the front panel screws must be tightened up to 0.8 Nm.
Terminal X131 (electronics ground): Refer to Fig. 9-1.
A varistor module, Order No. 6SN1111–0AB00–0AA0 can be inserted at con-
nector X181 on the NE module to protect against overvoltage (line supply net-
works not conforming to VDE (not necessary for UE 5 kW and the monitoring
module).
Note
All of the measures described here are only valid for supply networks which are
not compatible with VDE. In normal industrial supply networks, it is guaranteed,
without having to use other measures that the disturbance and noise values
remain below the permissible limits, thus ensuring disturbance–free operation
Screen connection
cables
Connecting–up the
shield to the front
panel
Connecting the
electronics ground
Protection against
overvoltages
Additional
measures
9.9 EMC measures
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