Danfoss VLT AutomationDrive FC 300 Design Manual page 173

FC 300 Design Guide
5-70 Term 32/33 Pulses per Revolution
Range:
128 - 4096 PPR
Function:
Sets the encoder pulses per revolution on the motor
shaft. Read the correct value from the encoder. You
cannot set the parameter while the motor is running.
5-71 Term 32/33 Encoder Direction
Option:
*Clockwise
Counter clockwise
Function:
Changes the detected encoder direction (revolution)
without changing the wires to the encoder. Select
Clockwise when A channel is 90° (electrical degrees)
before channel B by clockwise rotation of the
encoder shaft. Select Counter clockwise when A
channel is 90° (electrical degrees) after channel
B by clockwise rotation of the encoder shaft. You
cannot set the parameter while the motor is running.
5-72 Term 32/33 Gear Numerator
Range:
1.0 - 60000 N/A
Function:
Sets the numerator value for a gear ratio between
encoder and driving shaft. The numerator is
default setting ( )
*
How to Programme
*
1024PPR
[0]
[1]
*
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
related to the encoder shaft and the denominator
is related to the driving shaft.
Example: Speed on the encoder shaft = 1000 RPM
and speed on the driving shaft is 3000 RPM:
Par. 5-72 = 1000 and par. 5-73 = 3000, or
par. 5-72 = 1 and par. 5-73 = 3.
Par. 5-72 cannot be adjusted while the
motor is running.
If the motor control principle is 'Flux w motor
feedback' (par. 1-01 [3] ), the gear ratio between
motor and encoder must be 1:1. (No gear).
5-73 Term 32/33 Gear Denominator
Range:
1.0 - 60000 N/A
Function:
Sets the denominator value for a gear ratio between
encoder and driving shaft. The denominator is
related to the driving shaft. See also par. 5-72.
Par. 5-73 cannot be adjusted while the
motor is running.
1 N/A
*
1 N/A
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