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6.7. THE DISPLAYED SPEED IS INCORRECT
The machine displays this error if:
• the calibration is incorrect;
• there are HW problems with the CPU board – driver board – inverter and motor group.
THE DISPLAYED SPEED IS
Page 6.26
INCORRECT
Check the
inv erter parameters
setting and regulate the
speed
Is the relationship between
the display ed speed and the
inv erter f requency correct?
NO
Is the inv erter control v oltage
correct?
NO
Is the inv erter control v oltage
at the output of the inv erter
interf ace board correct?
NO
Is the inv erter control PWM
signal at the input of the
inv erter interf ace board
correct?
NO
A
SPAZIO FORMA: Service & Maintenance manual - rev. 1.0
1
2
YES
The machine is operating
3
YES
Replace the inv erter
4
YES
Check and/or replace
cable SF-7
5
YES
Replace the inv erter
interf ace board
correctly
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