1 General
BU 0800 en-4521 13
Unauthorised removal of covers, improper use, incorrect installation or operation causes a risk of
serious personal injury or material damage.
Depending on its protection class, the devices may have live, bare, moving or rotating parts or hot
surfaces during operation.
The device is operated with hazardous voltage. Dangerous voltage may be present at the supply lines,
contact strips and PCBs of all connecting terminals (e.g. mains input, motor connection), even if the
device is not working or the motor is not rotating (e.g. caused by electronic disabling, jamming of the
drive or a short circuit at the output terminals).
The device is not equipped with a master mains switch and is thus always live when connected to
mains voltage. Voltages may therefore be connected to a connected motor at standstill.
A connected motor may also rotate if the drive is disconnected from the mains and possibly generate
hazardous voltage.
If persons come into contact with dangerous voltage such as this, there is a risk of an electric shock,
which can lead to serious or fatal injuries.
The device and any power plug connectors must not be disconnected while a voltage is applied to the
device. Failure to comply with this may cause arcing, which in addition to the risk of injury, also may
result in a risk of damage or destruction of the device.
The fact that the status LED or other indicators are not illuminated does not safely indicate that the
device has been disconnected from the mains and is without voltage.
The heat sink and all other metal components can heat up to temperatures above 70°C.
Touching these parts can result in local burns to the body parts concerned (cooling times and
clearance from neighbouring components must be complied with).
All work on the device, e.g. transportation, installation, commissioning and maintenance work must be
carried out by qualified personnel (observe IEC 364 or CENELEC HD 384 or DIN VDE 0100 and
IEC 664 or DIN VDE 0110 and national accident prevention regulations). In particular, the general and
regional installation and safety regulations for work on low-voltage systems (e.g. VDE) must be
complied with, as must the regulations concerning correct use of tools and the use of personal
protection equipment.
During all work on the device, take care that no foreign bodies, loose parts, moisture or dust enter or
remain in the device (risk of short circuit, fire and corrosion).
Further information can be found in this documentation.
Triggering of a circuit breaker
If the device is secured by a circuit breaker and if this was triggered, this may indicate that a residual
current was interrupted. A component (e.g. device, cable or plug connector) in this circuit may have
caused an overload (e.g. short circuit or earth fault).
A direct reset of the circuit breaker may lead to the circuit breaker not being triggered afterwards
although the fault cause is still present. As a result, any current flowing into the fault location may
cause overheating and ignite the surrounding material.
After each triggering of a circuit breaker, all live components within this circuit must thus be visually
checked for defects and flashover tracks. Also check the connections at the device’s connection
terminals.
In case of no faults found or after the replacement of the defect components, switch on the power
supply by resetting the circuit breaker. Carefully observe the components keeping a safe physical
distance. As soon as you observe a malfunction (e.g. smoke, heat or unusual odours), the occurrence
of a new fault or if the status LED on the device does not light up, switch off the circuit breaker
immediately and disconnect the defect component from the mains. Replace the defect component.
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