Drehmo D 30 - Electrical Connection; Important Notes

Electrical connection
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5
Electrical connection
This section deals with the electrical connection of DREHMO actuators. Safety critical
aspects and information for installation and modification of the electrical connection
are presented.
5.1
Important notes
DANGER
Electric shock due to presence of hazardous voltage if the PE conductor
is NOT connected!
Death or serious injury.
à Connect all protective earth conductors (if required use external earth connection).
à Power the device only once the protective earth conductor has been connected.
WARNING
Electric shock due to presence of hazardous voltage!
Failure to observe this warning could result in death, serious injury, or property dam-
age.
à The electrical connection must be carried out exclusively by suitably qualified per-
sonnel.
à Prior to connection, heed basic information contained in this chapter.
Work on the electrical system or equipment and electrical installation work on actuat-
ors must only be carried out by skilled electricians themselves or by specially instruc-
ted personnel under the control and supervision of such an electrician and in accord-
ance with the applicable electrical engineering rules.
When setting up and operating the actuator in potentially explosive atmospheres,
heed the provisions in compliance with IEC/EN60079-14 for gas explosive atmo-
spheres.
In addition, heed the following points:
• Observe indications on name plate.
• Compare mains voltage.
• Actuator is connected in compliance with the terminal plan supplied. Should the
terminal plan not be available, please request another copy from the manufacturer
indicating the device number.
• For cable glands (including screw plugs!) make sure that the required IP enclosure
protection is guaranteed and suitable for connecting cables.
• The connecting cables must comply with the requirements in terms of electrical
connection data and load (mechanical, thermal and chemical).
• Appropriate fuses for cable protection must be installed in front of each actuator.
Fuse specifications must be calculated on the basis of published motor data.
WARNING
Danger of explosion for explosion-proof applications!
Death or serious injury.
à Before opening, ensure that there is no explosive gas and no voltage.
WARNING
Danger of explosion by impermissible heating up of the motor.
Death or serious injury.
à Plan and implement the required protective measures within the system.
à Depending on the wiring, unexpected startup after heating of of the motor is pos-
sible if the operation command is still present.