User Manual Frequency Inverter Vector Basic
MSF – Vathauer Antriebstechnik GmbH & Co KG
Tel: +49 (0) 5231 – 63030
Am Hessentuch 6-8
Fax: +49 (0) 5231-66856
32758 Detmold
Email:
Web: www.msf-technik.de
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2.1. Installation
The devices require adequate ventilation.
The hot air has to be dissipated above the inverter!
2.2. Cabling directives of superior controls
The frequency inverters are developed for the operation in industrial environments where high values
of electromagnetic interferences are expected. In general, a professional installation ensures a riskless
and error-free operation. If limits are required that exceed the EMC directive limits, the following
directives are recommended.
1. Please make sure that all devices in the control cabinet are connected together at a shared
grounding point or rail with short cores and great diameter are properly grounded. It is
especially important that every control device connected to the inverters (e.g. automation
devices) are connected via a short core with high diameter at the same grounding point like
the inverter.
2. The PE conductor of the drive controlled by the inverter should preferably directly connected
to the ground connection connected with the heat sink together with the PE of the power
supply of the concerning inverter. The existence of a central grounding rail within the control
cabinet and the connection of all ground cables to this rail normally guarantees an error-free
operation.
3. As far as possible you should use screened cables for the control. The cable ends have to be
terminated carefully and it must be taken care that the cores are not unscreened over long
distances. The screen of analog set point cables should only be grounded at the frequency
inverter single-sided. Not used cores of the control cores should be grounded.
4. The control cores have to be laid in the most possible distance from the load cores using
separated cable trenches etc. Cable crosses should possibly get an angle of 90°.
5. Make sure that contactors and relays in the control cabinets are suppressed either by RC
connection or varistors in case of AC contactors or by „ free wheeling diodes“ at DC
contactors, wherein the interference suppression bust be attached to the coils. The
suppression is especially important if the contactors are controlled by the relay in the
frequency inverter (optional).
6. Use screened cores for the load connections and ground the screening at both ends, if
possible directly at the PE output of the inverter.
7. If the drive should run within an environment sensible to electro-magnetic
interference, the usage of interference filters is recommended to reduce the grid-
bound and radiated interferences of the inverter. In this case install the filter as near
as possible to the inverter and take care for grounding.
8. Choose the lowest possible toggle frequency. This minimizes the intensity of the
electro-magnetic interference created by the frequency inverter.
At installation of the inverters you must not disregard safety directives!
