Protecting The Drive Against Ground Faults; Residual Current Device Compatibility; Implementing The Emergency Stop Function; Implementing The Safe Torque Off Function - ABB ACS560 Hardware Manual

monitors a calculated temperature value (based on a motor thermal model) or an
actual temperature indication given by motor temperature sensors.
The motor thermal protection model supports thermal memory retention and
speed sensitivity.
The user can tune the thermal model further by feeding in additional motor and
load data.
The most common temperature sensors are:
• motor sizes IEC180...225: thermal switch, for example Klixon
• motor sizes IEC200...250 and larger: PTC or Pt100.
See the firmware manual for more information on the motor thermal protection
function.

Protecting the drive against ground faults

The drive is equipped with an internal ground fault protective function to protect
the unit against ground faults in the motor and motor cable. This is not a personnel
safety or a fire protection feature. The ground fault protective function can be
reduced with parameter 31.20 Earth fault .
￭

Residual current device compatibility

The drive is suitable to be used with residual current devices of Type B.
Note: The EMC filter of the drive 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.
￭

Implementing the Emergency stop function

For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where emergency stop may be needed.
Design the emergency stop according to relevant standards.
Note: Pressing the stop key
an emergency stop of the motor or separate the drive from dangerous potential.

Implementing the Safe torque off function

See chapter The Safe torque off
Planning the electrical installation 77
on the control panel of the drive does not generate
function.