ABB FPTC-01, User Manual

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64 Parameter settings
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Additional notes
ACS880-07/17/37 drives with the Q978
In motor overtemperature situations, the FSO module also opens
the main contractor/circuit breaker.
ACS880-07/17/37 drives with the Q978 or +Q979
The FSO module is configured so that after the safety function
activation, the user must reset the FSO manually with the
emergency stop reset button. In this case, the user must reset the
FSO module with the emergency stop reset button also in motor
overtemperature situations. Also the indication lamp on the reset
button is illuminated.
The compliance of the emergency stop function with the relevant
standards requires this setting. Do not change this setting.
Mechanical brake control
If you use a mechanical brake with the thermal motor protection
circuit, pay special attention to the control of the mechanical brake.
If the motor deceleration by the mechanical brake causes extra
heat generation in the Ex zone, make sure that the use of the
brake does not rise the temperature excessively.
In some cases you cannot use the brake for the motor deceleration
when the motor thermal protection circuit has tripped, and the
motor temperature is excessive already.
For more information, see the drive firmware manual (or the FSO
user’s manual if you use the Safe brake control (SBC) function of
the FSO module).