Operation & Software Manual
112
Direct Drives & Systems
Chapter C: System functions
ETEL Doc. - Operation & Software Manual # DSC2P 903 / Ver. F / 3/6/05
Parameters K80, K81, K98 are calculated first, then parameter K56, and finally parameter K53.
With the bit# 0 of parameter
K133
, it is possible to choose the principle for finding the fine phase adjustment
(parameter K53) when using the AUT command. Parameter K133 can be used only when K90:1
≠
6. This
method allows a better compensation of the friction forces.
• If bit# 0 = 0
• Step 1: The look-up table pointer moves from parameters K97 to K93 during 2/3 of the time defined by
parameter K94
• Step 2: The process waits 1/3 of the time defined by parameter K94
• Step 3: Calculation of the position value of the motor’s coil towards the magnet (after the homing, this
value is used for the calculation of the fine phase value (parameter K53))
Remark:
Refer to
to see the graphical representation of the process.
• If bit# 0 = 1
• Step 1: The look-up table pointer moves from parameters K97 to K93 during 2/3 of the time defined by
parameter K94
• Step 2: The process waits 1/3 of the time defined by parameter K94
• Step 3: First calculation of the position value of the motor’s coil towards the magnet
• Step 4: Move away from parameter K93, in the same direction from a value given by parameters K93
to K97 during 2/3 of the time defined by parameter K94
• Step 5: Move back to parameter K93 during 2/3 of the time defined by parameter K94
• Step 6: The process waits 1/3 of the time defined by parameter K94
• Step 7: Second Calculation of the position value of the motor’s coil towards the magnet
• Step 8: The average between the two values is used for the position value of the motor’s coil towards
the magnet (after the homing, this value is used for the calculation of the fine phase value (parameter
K53)
final position time
t [ms]
Tuning
Tuning max [K93]
K94
2/3 K94
Tuning min [K97]
t [ms]
Current [A]
Current max [K92]
2/3 K94
K94
2/3 K94
2/3 K94
1/3 K94
K93 - K97