Careful consideration must be given to the functions of the drive which might result in a hazard, either through their intended behavior or through incorrect operation due to a fault. In any application where a malfunction of the drive or its control system could lead to or allow damage, loss or injury, a risk analysis must be carried out, and where necessary, further measures taken to reduce the risk - for example, an
1.4Environmental limits
Instructions in the Unidrive SP User Guide, Mentor MP User Guide, Affinity User Guide, Commander SK Getting Started Guide, Commander SK Technical Data Guide, Digitax ST Getting Started Guide and Digitax ST Technical Data Guide regarding transport, storage, installation and use of the drive must be complied with, including the specified environmental limits. Drives must not be subjected to excessive physical force.
1.5Compliance with regulations
The installer is responsible for complying with all relevant regulations, such as national wiring regulations, accident prevention regulations and electromagnetic compatibility (EMC) regulations. Particular attention must be given to the
The Unidrive SP User Guide, Mentor MP User Guide, Affinity User Guide, Commander SK Technical Data Guide and Digitax ST Technical Data Guide contain instructions for achieving compliance with specific EMC standards.
Within the European Union, all machinery in which this product is used must comply with all relevant safety and EMC directives applicable to the installation.
1.6Motor
Ensure the motor is installed in accordance with the manufacturer’s recommendations. Ensure the motor shaft is not exposed.
Standard squirrel cage induction motors are designed for single speed operation. If it is intended to use the capability of the drive to run a motor at speeds above its designed maximum, it is strongly recommended that the manufacturer is consulted first.
Low speeds may cause the motor to overheat because the cooling fan becomes less effective. The motor should be installed with a protection thermistor. If necessary, an electric forced vent fan should be used.
The values of the motor parameters set in the drive affect the protection of the motor. The default values in the drive should not be relied upon.
It is essential that the correct value is entered in the motor rated current parameter, Pr 5.07 (or Pr 0.46 in Unidrive SP, Mentor MP, Affinity and Digitax ST, or Pr 0.06 in Commander SK). This affects the thermal protection of the motor.
1.7Adjusting parameters
Some parameters and/or objects have a profound effect on the operation of the drive. They must not be altered without careful consideration of the impact on the controlled system. Measures must be taken to prevent unwanted changes due to error or tampering especially if a remote user can access the drive parameters.
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