Omron CK3W-AX1313 Series Startup Manual page 30

3 DirectPWM Interface Connection Procedure
No. Set item
*25 Motor[1].I2tSet
*26 Motor[1].I2tTrip
*27 Motor[1].AbsPha-
sePosOffset
*28 Motor[1].PhaseFin-
dingDac
*29 Motor[1].PhaseFin-
dingTime
*30 Motor[1].PowerOn-
Mode
3-16
Set value
28377*1.1/11.25 Set a rated current limit value (RMS). Compare those of the Servo
Drive and the motor, and use a smaller value. The motor has a smaller
value in this example.
Use the following formula for calculation.
I2tSet =
Determine parameters depending on the equipment used.
The following shows parameters for equipment used in this example.
Rated current for R88M-K05030T: 1.1 A (RMS)
ADC full range current for CDHD-0032APB0: 11.25 A (RMS)
(Motor[1].Max- Set a motor integrated current limit. Use the following formula for cal-
Dac*Motor[1].Max- culation.
Dac − Mo-
I2tTrip = (MaxDAC
tor[1].I2tSet*Mo-
Allowable time for R88M-K05030T: 3 seconds
tor[1].I2tSet)*3
400 Specify the minimum operation that is considered to be an efficient
phase search. Although the commutation cycle (2048) 1/4 = 512 (90°)
is ideal, it is set to approximately 80% in this example considering that
problems such as friction can prevent the operation.
If Motor[1].PhaseFindingStep=1 displacement is smaller than this
value during phase search, the phase search is considered to be failed
by Power PMAC.
4000 Set the size of phase-sequence current that is output to each motor
phase in phase search. Adjust it depending on the equipment used.
1000 Set duration of each step during phase search. Adjust it depending on
the equipment used.
The following duration is used in this example.
Duration = Servo cycle × Motor[1].PhaseFindingTime = 1 ms × 1000 =
1000 ms
1 1: Enables the motor after phase search.
0: Kills the motor after phase search.
Description
Cos (30°) × 32767 × Rated current
Servo driver ADC full-range current
2 2
+ IdCmd − I2tSet
CK3M-series Startup Guide DirectPWM Interface (O047)
2
) × allowable time (second)