Shielding Design - HBM T10FS Operating Manual

T10FS

5.2 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
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.
A0785-1.4 en
35
2
wire
HBM