Emotron VS10 User Manual

7.3.6.1. Pole position identification (PPI) without movement
This function was developed for a wide range of motor characteristics. In case of some
motor types, the identified pole position may differ considerably from the real pole
position, so that a considerable loss in torque and greater motor losses may occur. The
function can also be used if the motor cannot rotate (holding brake is active).
NOTICE
With an incorrect parameter setting and dimensioning of the inverter, the maximum
permissible motor current may be exceeded during the pole position identification.
Possible consequence: irreversible damage of the motor.
▶
Set the motor data correctly.  Motor data  108
▶ Only use an inverter that is performance-matched to the motor.
Preconditions
• The wiring of the three motor phases and the motor encoder must be carried out
according to the specifications from the mounting instructions.
• The inverter is ready for operation (no fault active).
• For the pole position identification (PPI) without movement, the motor must be at
standstill. In order that the pole position identification is only executed at standstill, set
the Start method "Flying restart circuit [2]" in 0x2838:001 (P203.01).
Details
In order that the pole position identification can be executed automatically after every
inverter enable, select "After each enable [2]" in 0x2C63:001. Further settings are not
required for this function.
Process of the pole position identification:
1.
After inverter enable, a defined pulse pattern is output that provides currents up to
approx. maximum motor current. The respective currents are measured. Based on
these currents, the field distribution can be deteted so that the pole position can be
calculated.
2.
After the pole position identification has been carried out successfully, the motor
follows
the setpoint selection.
During the pole position identification:
• The current test pulses cause audible engine noises that may be increased by the
machine
mechanics depending on the mechanical coupling!
• The function can be aborted by the inverter disable any time without changing the
settings. In this case, you have to carry out the pole position identification again.
• If the function is aborted by itself, the motor features may not be suitable for this
function.
Parameter
Name / value range / [default setting]
Info
0x2C63:001
PPI without movement: Execution
Setting can only be changed if the inverter is
inhibi
ted.
From version 04.00
Starting performance (without or with pole position identification before
the start).
0
Deactivated
Do not execute a pole position identification.
2
After each enable
Execute a pole position identification after every inverter enable.

Emotron VS10 Specifications

General

Brand	Emotron
Model	VS10
Category	Controller
Language	English