Safety instructions
General safety and application notes for Lenze controllers
11
EDKVF93−05 EN 2.0
Electrical connection
When working on live controllers, observe the applicable national regulations for the
prevention of accidents (e.g. VBG 4).
The electrical installation must be carried out according to the appropriate regulations
(e.g. cable cross−sections, fuses, PE connection). Additional information can be obtained
from the documentation.
The documentation contains information on the installation according to EMC (shielding,
earthing, arrangement of filters, and installation of the cables). Also observe this
information with regard to drive controllers labelled with CE marking. The manufacturer
of the system or machine is responsible for the compliance of the limit values required in
connection with EMC legislation. In order to observe the limit values for radio interference
emissions effective at the installation site, you have to mount the drive controllers into
housings (e. g. control cabinets). The housings have to enable an EMC−compliant structure.
Particularly observe that, for instance, control cabinet doors preferably are metallically
connected to the housing in a circumferential manner. Reduce openings or apertures
through the housing to a minimum.
Lenze controllers can cause a DC current in the PE conductor. If a residual current device
(RCD) is used for the protection in the case of direct or indirect contact on a three−phase
supplied controller, only one residual current device of type B is permissible on the current
supply side of the controller. If the controller is supplied with one phase, also a residual
current device (RCD) of type A may be used. Apart from the use of a residual current device
(RCD) also other protective measures can be used, like for instance isolation from the
environment by double or reinforced insulation or isolation from the supply system by a
transformer.
Operation
If necessary, systems including controllers must be equipped with additional monitoring
and protection devices according to the valid safety regulations (e.g. law on technical
equipment, regulations for the prevention of accidents). The controllers can be adapted to
your application. Please observe the corresponding information given in the
documentation.
After the controller has been disconnected from the supply voltage, all live components
and power connections must not be touched immediately because capacitors can still be
charged. Please observe the corresponding stickers on the controller.
All protection covers and doors must be shut during operation.
Notes for UL−approved systems with integrated controllers:
UL warnings are notes that
only apply to UL systems. The documentation contains special UL notes.
Safety functions
Special controller variants support safety functions (e.g. "safe torque off", formerly "safe
standstill") according to the requirements of appendix I No. 1.2.7 of the EC Directive
"Machinery" 98/37/EC, EN 954−1 category 3 and EN 1037. Strictly observe the notes on the
safety functions given in the documentation on the respective variants.
Maintenance and servicing
The controllers do not require any maintenance if the prescribed operating conditions are
observed.
