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CHAPTER 4 - Start-up and adjustment of the drive
4.4.5 Connection for analog torque limit
The picture shows a typical application for torque limit.
4.5 Adjustment and regulation procedures
4.5.1 Resolver autophasing
The procedure for resolver autophasing is carried out just once by the manufacturer, using
the convertor and the "motor & sensors" that make up the drive. The procedure must be
repeated only if the mechanical assembly of the resolver on the motor shaft has been
modified. In this case proceed as follows:
The motor must be able to rotate freely, since it makes almost one complete mechanical
revolution.
Once having supplied, to execute the autophasing, it will be necessary to set to zero the
proportional gain P1, KP, as well as the integral gain P2, Kl. Now enable torque (input on
terminal RE, J1/3) and speed reference (input on terminal SE, J1/4): with this procedure the
7-segment display stands still (no more blinking) and visualizes 0.
At this moment set F1, Auto phasing=SET, with the keyboard. At the end of autophasing,
the keyboard, in correspondence of F1, will display the word "DONE" for a few seconds, and
will then go back to "CLEAR". The resolver phase is automatically memorized in parameter
P29, RS_OFF and it should not be modified. Moreover, the parameter is automatically
memorized in EEPROM. To reset the parameters P1 and P2 to their original values it will be
enough to set the flag F15 , EEPROM gains, thus re-obtaining the memorized values. The
drive is now able to work under any condition.
4.5.2 Adjusting the I
The drive is equipped with two different protections against overtemperature: one for the
convertor and one for the motor.
The first is set according to the size of the convertor and does not need further adjusting. In
fact, the convertor is able to deliver maximum current for about 1,7 seconds, before the I
MANIU04.9607 GB 03/97
2
t thermal protection threshold
To use analog torque limit, see
paragraph 4.5.4.
2
t
Page 4.15
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