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of the messages can be edited on the control panel by selecting Menu - Settings
- Edit texts.
Motor phase loss detection (parameter 31.19 )
The parameter selects how the drive reacts whenever a motor phase loss is
detected.
Earth (Ground) fault detection (parameter 31.20 )
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 within 2 milliseconds
•
in an ungrounded supply, the supply capacitance must be 1 microfarad or more
•
the capacitive currents caused by shielded motor cables up to 300 meters will
not activate the protection
•
the protection is deactivated when the drive is stopped.
Safe torque off detection (parameter 31.22 )
The drive monitors the status of the Safe torque off input, and this parameter
selects which indications are given when the signals are lost. (The parameter does
not affect the operation of the Safe torque off function itself). For more information
on the Safe torque off function, see the Hardware manual .
Swapped supply and motor cabling (parameter 31.23 )
The drive can detect if the supply and motor cables have accidentally been swapped
(for example, if the supply is connected to the motor connection of the drive). The
parameter selects if a fault is generated or not. Note that the protection should
be disabled in drive/inverter hardware supplied from a common DC bus.
Stall protection (parameters 31.24 ... 31.28 )
The drive protects the motor in a stall situation. It is possible to adjust the
supervision limits (current, frequency and time) and choose how the drive reacts
to a motor stall condition.
Overspeed protection (parameter 31.30 )
The user can set overspeed limits by specifying a margin that is added to the
currently-used maximum and minimum speed limits.
Ramp stop supervision (parameters 31.32 , 31.33 , 31.37 and 31.38 )
The control program has a supervision function for both the normal and emergency
stop ramps. The user can either define a maximum time for stopping, or a maximum
Program features 117
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