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2.9
Parameter settings for a motor with encoder
Parameter for the encoder (Pr.359, Pr.369, Pr.851, Pr.852)
• Set the encoder specifications.
Pr.
359
852
Encoder rotation direction
C141
C241
369
851
Number of encoder pulses
C140
C240
The parameters above can be set when a Vector control compatible option is installed.
• The following table shows parameters to be set according to the Vector control compatible option to be used.
Item
Encoder/Resolver rotation
direction
Number of detector pulses
Parameter settings for the motor under Vector control
Pr.9 Electronic
Motor model
thermal O/L relay
Rated motor
Standard motor
current
Constant-torque
Rated motor
motor
current
*1
Offline auto tuning is required. (Refer to the Instruction Manual (Function).)
*2
Set this parameter according to the motor.
66
2. INSTALLATION AND WIRING
2.9 Parameter settings for a motor with encoder
Initial
Name
value
1
1024
FR-A8AP/FR-A8AL/FR-
A8APA parameter
Pr.359
Pr.369
Pr.71 Applied
motor
*1
0 (3)
*1
1 (13)
Setting
range
Set when using a motor for which
0
forward rotation (encoder) is clockwise
(CW) viewed from the shaft
100
Set when using a motor for which
1
forward rotation (encoder) is
counterclockwise (CCW) viewed from
the shaft.
101
Set the number of encoder pulses.
0 to 4096
Set the number of pulses before it is multiplied by 4.
FR-A8APR parameter
FR-A8APS parameter
— (obtained via
— (fixed pulses of 1024)
communication from the
encoder)
Pr.80 Motor
Pr.81 Number of
capacity
motor poles
Number of motor
Motor capacity
poles
Number of motor
Motor capacity
poles
Description
Set for the operation
at 120 Hz or less.
Set for the operation
at a frequency higher
CW
than 120 Hz.
Set for the operation
at 120 Hz or less.
Set for the operation
at a frequency higher
CCW
than 120 Hz.
FR-A8TP parameter
Pr.852
Pr.851
Pr.359/Pr.852
Pr.369/Pr.851
Encoder rotation
Number of
direction
encoder pulses
*2
*2
*2
*2
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