Interroll DP 0080, User Manual

Page: 23 / 40

Version 1.2 (08/2022) en
Translation of original operating instructions 23 of 40
Assembly and installation
6.4.3 External motor protection
The motor must always be installed together with suitable external motor protection, e.g., a motor circuit breaker
or frequency inverter with protection against excessive current. The protective device must be adjusted to the rated
current of the corresponding motor (see type plate).
6.4.4 Integrated thermal protection
CAUTION
Accidental motor start
Crushing hazard for fingers
¾
Connect the integrated thermal circuit breaker to an external control device that interrupts the current
supply to the motor at all poles in case of overheating.
¾
After the thermal circuit breaker has tripped, examine and remove the cause for overheating before the
current supply is reactivated.
The standard maximum switching current of the thermal circuit breaker is 2.5 A. For other options, please contact
Interroll.
For operational safety, the motor must be safeguarded against overload with an external motor protection, as well as
an integrated thermal protection; otherwise, there is no warranty if the motor fails.
6.4.5 Frequency inverter
Asynchronous Pallet Drives can be operated with frequency inverters. Frequency inverters from Interroll are general
adjusted to factory setting and have to be parameterized for the respective Pallet Drive. For this purpose, Interroll can
supply parameterization instructions. In this case, please contact your local Interroll partner.
• If no frequency inverter from Interroll is used, the frequency inverter must be correctly parameterized according to
the specified motor data. Interroll can provide only very limited support for frequency inverters that are not being
sold by Interroll.
• Resonance frequencies in the power supply line must be prevented since the create voltage spikes in the motor.
• If the cable is too long, frequency inverters generate resonance frequencies in the line between frequency inverter
and motor.
• Use a completely shielded cable to connect the frequency inverter to the motor.
•
Install a sine-wave filter or a motor choke if the cable is longer than 10 meter or if a frequency inverter controls
several motors.
• Ensure that the cable shield is connected to a grounded part according to the electrotechnical guidelines and local
EMC recommendations.
• Always observe the installation guidelines of the frequency inverter manufacturer.