Manual R06-2016
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ROTARY INDEXING TABLE CONTROLLER
EF2...B
SAFETY |
2.3 Residual hazards
WARNING
Electric shock
Power and control connections can still conduct electricity even if the machine is at a standstill. Work on electrical
equipment should only be performed by qualified electricians in compliance with the instructions in the operating
manual for the electrical system documentation. Electrical connections for the machine should only be disconnected
or plugged in when the power supply is deactivated and secured against reactivation. Touching energised compon-
ents can lead to serious or fatal injuries.
Residual energy
After the frequency converter has been disconnected from the power supply, a residual charge may still be present.
After shutting down the device and before disconnecting the plugs, wait at least five minutes and then check whether
the capacitor has been discharged to a voltage of < 65V DC at the "DCP" and "DCN" terminals. The fact that the
LEDs on the drive are off is not an indication that the unit is disconnected from the line supply and there is no voltage.
Touching live parts can result in death or serious injury.
Electrical, magnetic, or electromagnetic fields
Electrical, magnetic and electromagnetic fields (EMFs) generated in operation can pose danger to persons who are
present in the immediate vicinity of the product - especially to persons with pacemakers, implants, or similar devices.
The relevant directives and standards have to be observed by the machine / plant operators and persons present in
the vicinity of the product! These are, for example, EMF Directive 2004/40/EEC and standards EN 12198-1 to -3 for
the European Economic Area (EEA) and in the Federal Republic of Germany, the accident prevention regulation
BGV 11 and the associated rule BGR 11 "Electromagnetic fields" from the German employer's liability accident
insurance association.
They state that a hazard analysis must be performed for every workplace and measures must be derived from it and
applied in order to reduce dangers and their impact on persons, and that exposure and danger zones must be defined
and observed.
The relevant safety instructions in each chapter must be observed.
Danger to life due to high leakage currents if the external protective conductor is interrupted
The drive components generate a high leakage current trough the protective conductor. Touching conductive parts
can cause death or serious injuries if the protective conductor is interrupted.
The protective conductor (PE) must meet the following conditions:
• The protective conductor (PE) is routed so that it is protected against mechanical damage.
• The protective conductor (PE) must have a cross-section of
≥
10 mm
2
Cu or
≥
16 mm
2
Al.
• If the protective conductor (PE) in the connection cable does not meet this minimum cross section, then an addi-
tional ground conductor needs to be routed parallel to the protective conductor (PE) and with a fixed connection to
the machine.
• The protective conductor (PE) corresponds to the local regulations with increased leakage current.
RCD
When using the EF2 controller, RCDs are not suitable for establishing safety circuits for the protection of persons
against electrical hazards.
The implementation of suitable protective measures is the responsibility of the operator.
Switching elements (main switches, contactors), for switching the power drive system on and off must have a max.
delay time of 35 ms between the closing/opening of the individual main contacts.
Risk of injury due to absent safety equipment.
Safety equipment and covers that have been removed for maintenance purposes must be put back into place before
switching the machine back on. Operation without safety equipment and covers is prohibited.
The implementation of a safety concept is the responsibility of the operator. The operator must plan for and provide
sufficient protective measures such as fences, light barriers, emergency-stop circuits, covers, warning signs, etc.
CAUTION
Risk of injuries due to burning.
Depending on their design, components (motor, frequency converter) may have hot surfaces during operation.
Operating temperatures > 60° C are possible. Touching hot components will lead to burns.
