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6 SM-EtherCAT User Guide
www.controltechniques.com Issue Number: 2
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 over-speed
protection device in case of failure of the speed control, or a fail-safe mechanical brake
in case of loss of motor braking.
1.4 Environmental 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.
1.5 Compliance 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 cross-sectional areas of
conductors, the selection of fuses or other protection, and protective ground
connections.
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.
1.6 Motor
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.
1.7 Adjusting 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.