Shielding Design; Status Led - HBK HBM T210 Montageanleitung

Measuring cables should not be laid parallel to power cables and control circuits (that is,
not in shared cable ducts). If this is not possible, protect the measurement cable with a
rigid steel conduit, for example, and keep it as far away from other cables as possible.
Avoid stray fields from transformers, motors and contact switches.
Notice
At the maximum rotational speed of 30,000 rpm the cable length is limited to maximum
10 m.
5.4

Shielding design

The cable shield is connected in accordance with the Greenline concept. This encloses
the measurement system 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.
In the event of interference due to potential differences (compensating currents), discon­
nect supply voltage zero from the housing ground at the measuring amplifier and lay a
potential equalization line between the transducer housing and the measuring amplifier
housing (copper cable, 10 mm
5.5

Status LED

The transducer has a status LED. The various states are shown in table Tab. 5.1.
LED
Flashing blue
Lit green
Flashing red
Lit red
Tab. 5.1 Various LED states
T210
ELECTRICAL CONNECTION
2
cable cross-section).
Description
Boot-up
Measurement shaft is started.
Ready for operation
Measurement shaft ready for
measurement.
Warning
Non-critical state. Technical spec­
ifications are no longer guaran­
teed.
Error
Critical state. Stop operation.
Analog output
signals
-14 V and 0 Hz
Measurement
signal
Measurement
signal
Error signal
Output
status
LOW
HIGH
LOW
LOW
13