Implementing A Ground Fault Detection Function; Residual Current Device Compatibility; Implementing The Emergency Stop Function; Cabinets - ABB ACS880 Electrical Planning Instructions

PTC relay
Type
External relay
Drive options +L505 and +L513
PTC alternative B: Decisive voltage class B of IEC 60800-5-1 (basic insulation) is provided
with a 6 kV relay. Circuits connected to all motor protection relay inputs and outputs must
be protected against direct contact.
Pt100 alternative A: This table shows the insulation requirement for a customer's external
relay, and the insulation requirement for the sensor to fulfill decisive voltage class A (double
insulation) of IEC 60800-5-1.The table also shows the insulation of the factory-installed
relay (plus code option for a cabinet-installed drive), and the insulation requirement for the
sensor.
Pt100 relay
Type
External relay
Drive options +L506 and +L514
Pt100 alternative B: Decisive voltage class B of IEC 60800-5-1 (basic insulation) can be
achieved when there is basic insulation between the sensor and live parts of the motor.
Circuits connected to all motor protection relay inputs and outputs must be protected against
direct contact.

Implementing a ground fault detection function

The drive is equipped with an internal ground fault protective function to protect the drive
against ground faults in the motor and motor cable in TN (grounded) networks. This is not
a personnel safety or a fire protection feature. The ground fault protective function can be
disabled with a parameter, refer to the firmware manual.
￭

Residual current device compatibility

The drive is suitable to be used with residual current devices of Type B.
Note: As standard, the drive contains 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

￭

Cabinets

See the drive hardware manuals for emergency stop options.
￭

Modules

For safety reasons, install the emergency stop devices at each operator control station and
at other operating stations where emergency stop may be needed. Implement the emergency
stop according to relevant standards.
You can use the Safe torque off function of the drive (inverter unit) to implement the
Emergency stop function.
Insulation
Basic insulation 6 kV
Basic insulation 6 kV
Insulation
Basic insulation 6 kV
Basic insulation < 6 kV
Electrical planning guidelines 29
Temperature sensor insulation
requirement
Basic insulation
Basic insulation
Temperature sensor insulation
requirement
Basic insulation
Double or reinforced insulation