TAM00721
14
DSD-028 / DSD-036 / DSD2-028 / DSD2-036
04/2013
Three-phase-synchronous motor
English
4
Commissioning, operation
4.1
Safety instructions
Working on the electric motor:
Work must not be carried out on the electric motor until the motor has come to a standstill
and is electrically isolated. All connections, such as screw connections, that were loosened
when working on the motor must be tightened again prior to commissioning.
When carrying out work on the motor, please observe the technical instructions and notes in
the respective sections in these Commissioning and Maintenance Instructions.
Attention:
If the optional holding brake is fitted, it must not be used to secure anything while
working on the motor (e. g. for retaining loads)!
Risk of fatality due to electric shock:
Make sure that the motor is disconnected and electrically isolated.
Never disconnect the motor connections during operation.
Only connect measuring instruments when the motor is disconnected from the power supply
and electrically isolated.
Only commence work on the motor connections when you are sure the motor is electrically
isolated and there is no potential.
When in operation, electric potential can be found at the motor contacts and at the motor
windings. Never touch these modules / elements while the motor is in operation.
Installing and uninstalling safety devices:
The electric motor must not be commissioned without first mounting the safety devices.
The motor must be put out of operation when installing and dismantling components and
systems which are provided for monitoring the motor for safe operation.
Danger on physical contact:
Make sure that the electric motor has come to a standstill and is secured against accidental
restarting before you touch it.
Only touch the output shaft when it is electrically isolated and the motor has come to a
standstill. Otherwise there is a risk due to the rotating rotor.
Danger of burns! Never touch the motor housing when the motor is running at rated load.
The surface temperatures on the motors may exceed 70 °C.
4.2
Checks prior to commissioning
• The drive is undamaged and is not located within the danger zone of other equipment.
• The motor is correctly aligned and fastened. All screwed connections are correctly tightened.
• All the appropriate safety devices (mechanical, thermal, and electrical) are mounted.
• The motor connections have been made correctly.
• The protective conductor system is correct and its functionality has been checked.
• The cables are not in contact with the surface of the motor.
• The drive is not blocked (release brake, if present).
• Emergency stop functions have been checked
