ABB ACS880 Series, Electrical Planning Manual

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Circuits connected to all motor protection relay inputs and outputs must be protected against
direct contact.
Implementing a ground fault protecting function
￭ Cabinet-installed multidrives
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 function is not a personnel safety
or a fire protection feature. See the firmware manual for more information.
An optional ground fault monitoring device (+Q953) is available for TN (grounded) systems.
The option includes a ground fault indicator on the drive cabinet door. An optional ground
fault monitoring device (+Q954) is available for IT (ungrounded) systems. The option includes
a ground fault indicator on the drive cabinet door.
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 nuisance faults in circuit breakers.
￭ Multidrives modules
The drive is equipped with an internal ground fault protective function to protect the drive
against ground faults in the motor and motor cable. This function is not a personnel safety
or a fire protection feature. See the firmware manual for more information.
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 nuisance faults in circuit breakers.
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. Implement the emergency
stop according to relevant standards.
￭ Cabinet-installed multidrives
You can order the drive with an emergency stop function.
See the appropriate manual for more information.
Code Name
3AUA0000119885 Emergency stop, stop category 0 (Q951) for ACS880 multidrives user's manual
3AUA0000119886 Emergency stop, stop category 1 (Q952) for ACS880 multidrives user's manual
3AUA0000119891 Emergency stop, stop category 0 (Q963) for ACS880 multidrives user's manual
34 Electrical planning guidelines