Safety instructions
General safety and application notes for Lenze controllers
2
15
BA33.0001 EN 2.0
Electrical connection
When working on live controller s, the valid national regulations for the prevention of
accidents (e. g. VBG 4) must be observed.
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 about installation in compliance with EMC
(shielding, earthing, filters and cables). These notes must also be observed for CE-marked
controllers. The manufactur er of the system or machine is responsible for the compliance
with the required limit values demanded by the EMC legislation.
In the case of a malfunction (short circuit to frame or earth fault), Lenze controllers can
cause a DC residual current in the protective conductor. If an earth-leakage cir cuit breaker
(residual current device) is used as a protective means in the case of indirect contact, only
an e.l.c.b. of type B may be used on the current supply side. Otherwise, another protective
measure such as separation from the environment through double or reinforced
insulation or disconnection from the mains by means of a transfor m er must be used.
Operation
If necessary, systems including controllers must be equipped with a dditional monitoring
and protection devices according to the valid safety regulations (e.g. law on technical
equipment, r egulations for the prevention of accidents). The controller can be adapted to
your application. Please observe the corresponding information given in the
documentation.
After a controller has been disconnected from the voltage supply, 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.
Notefor ULapproved systemswith integrated controllers: UL warnings are notes thatonly
apply to UL systems. The documentation contains special information about UL.
Safe standstill
Some variants of the controllers support safety functions (e. g. ”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. The notes on the safety instructions in the
documentation of the variants must be strictly observed.
Maintenance and servicing
The controllers do not require any maintenance if the prescribed conditions of operation
are observed.
Ifthe ambient air is polluted, the cooling surfaces ofthe controller may become dirty or the
air vents of the controller may be obstructed. Therefore, clean the cooling surfaces and air
vents periodically under these operating conditions. Do not use sharp or pointed tools for
this pur pose!
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