4th edition, 26-08-2020
7000.05058, 4th edition, 26-08-2020
7000.05058
Installation
38
4.3.6
Error avoidance and troubleshooting
1. Can the problem clearly be traced back to the FAULHABER drive system?
a) Switch the output stage off and on.
The voltage controller mode is suitable here.
b) Unplug controller supply voltages or operate controller via a separate external
power supply used solely for this purpose.
c) If present, switch off unnecessary system components.
2. Have the measures shown in chap. 4.3.2, p. 32 been performed and tested?
a) Can a uniform earth potential be ensured, e.g., by using large cable cross sections?
b) Is the RF quality of the connections ensured?
Establish connection through metal-to-metal connection elements.
Remove paints or other insulating materials. Check that the shield connection is
correct.
3. Were the recommended cables used?
a) Select supply cables in the accessory catalog.
b) Supply cables must be shielded as they otherwise act as an antenna.
Unshielded cables could cause interference in the surrounding area. If uncertain,
the shield can be doubled; for further information, see FAULHABER accessories cat-
alog and chap. 4.3.4, p. 34.
4. Are the contacts correctly screwed down or properly plugged in?
5. Are the cables laid in accordance with the standards/directives (e.g., IPC-A-620B-2013)?
a) Lay sensor cables at least 10 cm from all other signal cables that are not also sensor
cables. Alternatively, use absolute encoders and/or line drivers.
b) Keep cables away from high-voltage current and mains cables.
c) Only cross cables at an angle of 90°.
6. Is it necessary to use filters?
a) Use filters in the case of poor signal quality or if interference occurs/is to be
expected.
Conformity measurements
The following points must be observed during the conformity measurement:
Conducted interference voltage measurement
Radiated interference voltage measurement
When laying cables, remove all loops.
Lay the cables with a meandering shape.
Where possible, lay cables over an earth plate.
The shield is to be connected over a large area, ide-
ally with a round connection.
Use an input filter. When selecting, pay attention to
the difference of filter attenuation between 50
Ω
and realistic values 1/100
Ω
or 100/1
Ω
measurement.
If possible, secure cable with shield clamps or with
adhesive tape.
