ABB ACS850-04 series, Firmware Manual

Page: 73 / 296

Program features 73
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External fault (parameter 30.01 )
A source for an external fault signal is selected by this parameter. When the signal is
lost, a fault is generated.
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Local control loss detection (parameter 30.03 )
The parameter selects how the drive reacts to a control panel or PC tool
communication break.
„
Motor phase loss detection (parameter 30.04 )
The parameter selects how the drive reacts whenever a motor phase loss is detected.
„
Earth fault detection (parameter 30.05 )
The earth fault detection function is based on sum current measurement. Note that
• an earth fault in the supply cable does not activate the protection
• in a grounded supply, the protection activates in 200 milliseconds
• in an ungrounded supply, the supply capacitance should be 1 microfarad or more
• the capacitive currents caused by shielded motor cables up to 300 metres will not
activate the protection
• the protection is deactivated when the drive is stopped.
„
Supply phase loss detection (parameter 30.06 )
The parameter selects how the drive reacts whenever a supply phase loss is
detected.
„
Safe Torque Off detection (parameter 30.07 )
The drive monitors the status of the Safe Torque Off input. For more information on
the Safe Torque Off function, see the
Hardware Manual of the drive.
„
Switched supply and motor cabling (parameter 30.08 )
The drive can detect if the supply and motor cables have accidentally been switched
(for example, if the supply is connected to the motor connection of the drive). The
parameter selects if a fault is generated or not.
„
Stall protection (parameters 30.09 … 30.12 )
The drive protects the motor in a stall situation. It is possible to adjust the supervision
limits (torque, frequency and time) and choose how the drive reacts to a motor stall
condition.