Electrical connection
T10FS A0785-150 HBM: public 47
6.2 Shielding design
The cable shield is connected in accordance with the
Greenline concept. This encloses the measurement
system (without the rotor) in a Faraday cage. It is
important that the shield is laid flat on the housing ground
at both ends of the cable. Any electromagnetic
interference active here does not affect the measurement
signal. Special electronic coding methods are used to
protect the transmission path and the rotor from
electromagnetic interference.
In the case of interference due to potential differences
(compensating currents), operating voltage zero and
housing ground must be disconnected on the amplifier
and a potential equalization line established between the
stator housing and the amplifier housing (copper
conductor, 10 mm
2
wire cross-section).
If potential differences arise between the rotor and the
stator on the machine, perhaps due to unchecked
leakage, and this causes interference, it can usually be
overcome by connecting the rotor directly to ground, for
instance by a wire loop. The stator should be fully
grounded in the same way.
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