Encoder Position Tuning - Mitsubishi Electric 800 Series Instruction Manual

6.5

Encoder position tuning

• Encoder position tuning is required when a PM motor with an encoder is driven. The measured offset value between the
motor home magnetic pole position and the encoder home position is stored. Only the encoder position tuning can be
performed when offline auto tuning is not required, such as when the parameters for motor constant are set manually, or
when offline auto tuning is already performed.
Pr. Name
373
Encoder position tuning setting/status
C142
1105
Encoder magnetic pole position offset
C143
 Before performing encoder position tuning
• Check that the FR-A8APS, a motor, and an encoder are properly connected.
• Check that a motor (single, stop status) is connected. (Check that the motor is not rotated by an external force during
tuning.)
• Check that the mechanical brake is released.
• Check that the vector control (speed control) for the PM motor with an encoder is selected (refer to
NOTE
• The encoder position tuning is required when a PM motor is used. (It is disabled when an induction motor is used.)
• When auto tuning is performed at the setting of Pr.96="101", offline auto tuning and the encoder position tuning can
be performed at the same time (refer to
 Setting
• To perform tuning, set Pr.373="1".
Vector Vector Vector
Initial Setting
value range
0 Encoder position tuning is disabled.
0
1 Encoder position tuning is enabled.
0 to 4095 Encoder position tuning result is set.
9999
9999 Encoder position tuning is not performed.
page 27).
Description
page 26).
VECTOR CONTROL
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