Operating instructions

Interference
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9 Interference
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The following chapters describe possible causes for malfunction and the instructions to correct them.
If you observe recurring errors you might consider electrical interference suppression measures as described
in section 9.2 Electrical interference suppression.
If errors cannot be corrected with the following instructions please contact the manufacturer (see last page).
9.1 Security
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Basics
CAUTION!
Risks of injury through improper fault clearances!
Improper fault clearances can cause serious personal or property damage
Therefore:
 Fault clearance may only be carried out by qualified and instructed
personnel
 Prior to the beginning of work provide sufficient room to assemble the
equipment
 Please look out for cleanliness at the place of installation; tools and
components that are lying about loosely are sources of are sources of
accidents
If components have to be replaced:
 Look out for correct installation of spare parts
 All mounting elements have to be assembled correctly
 Before resetting please ensure that all covers and protective devices are
installed correctly and function properly
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When interference occurs, the following (external) measures should be checked additionally.
Place of installation:
The controller should not be installed near sources of interference, which generate strong inductive
or capacitive interferences or strong electrostatic fields. Install the external power supply directly
beside the controller to avoid long low voltage wires.
Power supply:
Connect the external power supply to a phase of 230 VAC or 115 VAC which is not used for
engines. If not possible use a galvanic separation through an additional transformer.
Wire installation:
Install all wires for low voltages and encoders always separately from power wires (230 VAC/400
VAC). Avoid installing these wires close to any contactor or contactor wires.