Kostal INVEOR MA, Operating Manual

Page: 22 / 96

Installation
22 Operating manual INVEOR
3.2.6 Preventing electromagnetic interferences
Screened lines should be used for control circuits where possible. The
screening should be applied to the line end with special care without laying
the leads across longer stretches without screening.
Screening for analogue target values should only be applied on one side of
the drive control.
In principle, control lines should always be laid as far away from power-
conducting lines; it may be necessary to use separate ducts. If lines do cross,
they should do so at an angle of 90°.
Upstream circuit elements, such as protector switches and brake coils, or
circuit elements that are operated via the outputs of the drive control have to
be interference-suppressed. RC circuits are suitable as a.c. voltage protector
switches, while free-wheeling diodes or varistors are usually used as dc
voltage protector switches. These interference suppression devices are
attached directly to the protector switch coils. Power supply for a mechanical
brake may not be carried in the same cable.
Power connections between the drive control and the motor should always
be screened or reinforced, and the screening has to have large-scale
grounding at both ends. The use of EMV cable screw connections is
recommended. These are not part of the scope of delivery.
Wiring suitable for EMV must be ensured.
3.3 Installing the drive control integrated in the motor
3.3.1 Mechanical installation
Proceed as follows when mechanically installing the drive control:
1. Open the standard motor connection box.
2. Disconnect the wires from the connection terminals. Memorise or write
down the connection sequence.
3. Remove the motor terminal block if necessary.
4. Remove the fastening screws of the connection housing and remove it.
Make sure that the seal is not damaged.