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LE - Encoder Parameters
X3A Encoder Input 1
Parameters LE1…LE17 correspond to encoder interface 1, X3A.
This parameter displays the type of encoder feedback card installed in the drive.
This parameter is also used to reset ‘Error Encoder Interface’ faults. If an ‘Error
Encoder Interface’ fault has occurred, and the problem has been corrected,
the error can be reset by displaying the value of LE01 and pressing ENTER.
This is the only way to manually reset the ‘Error Encoder Interface’ fault.
Enter the encoder pulses per revolution (ppr) listed on the encoder. This refers
to the encoder input X3A.
Higher encoder pulses per revolution can be supported. Refer to LE08,
LE09 and LE10 for further details.
If the incremental encoder pulse number is not correctly adjusted,
the motor can run very slowly and draw high current, run too fast and
OVERSPEED IS POSSIBLE, or other unforeseen conditions may occur.
Therefore, it is absolutely necessary to adjust this parameter correctly.
This parameter is used to invert the A and B incremental channels and/or
invert the direction of motor rotation.
Setting: Description: NUM
Not Inverted No changes are made to A/B or direction of
rotation.
0
A-B Swapped Encoder channels A and B are swapped
internally.
1
Inverted Rotation The direction of motor rotation is inverted 2
A-B Swap &
Inverted Rotation
Encoder channels A and B are swapped
internally, and the direction of motor rotation
is inverted.
3
Default = Not Inverted (0)
For PM Synchronous Motors, if the A/B Channels are swapped, the
encoder pole position value in LE06 will have a different corresponding
value and must be relearned. See Section 5.10 for additional information.
For PM motors, the direction of rotation should not be changed by
swapping motor phases.
6.4 LE - Encoder Data Parameters
LE01
Encoder Interface
LE02
Encoder 1 Pulse
Number
LE03
Swap Encoder 1
Channels
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