Planning the electrical installation 43
Motor thermal protection
According to regulations, the motor must be protected against thermal overload and
the current must be switched off when overloading is detected.
The drive can be configured to include a motor temperature input that protects the
motor and switches off the current when necessary. For more information about
motor thermal protection see Thermal switch connection on page 58, and the Mint
keyword MOTORTEMPERATUREINPUT in the Mint WorkBench help file.
Ground fault protection
The drive is equipped with an internal ground fault protective function to protect the
unit against ground faults in the motor and the motor cable. This is not a personal
safety or a fire protection feature.
The optional mains filter includes capacitors connected between the main circuit and
the frame. These capacitors and long motor cables increase the ground leakage
current and may cause fault current circuit breakers to function.
Emergency stop devices
For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where emergency stop may be needed.
Note: Stopping motion and/or disabling the drive in software does not separate the
drive from dangerous potential.
Residual current device (RCD) compatibility
MicroFlex e190 drives are suitable to be used with residual current devices of Type B.
Other measures for protection in case of direct or indirect contact, such as separation
from the environment by double or reinforced insulation or isolation from the supply
system by a transformer, can also be applied.
To Next Page
Loading...
Need help?
General
