List Of Notes - Omron CK3W-AX2323 Series Startup Manual

3 DirectPWM Interface Connection Procedure
3-4-1

List of Notes

The following table shows details on notes (description of set items) in step 2.
No. Set item
*1 EncTable[1].Type
*2 EncTable[1].pEnc
*3 EncTable[1].Scale-
Factor
*4 Gate3[0].Chan[0].E
ncCtrl
*5 Gate3[0].Ad-
cAmpStrobe
*6 Gate3[0].AdcAm-
pHeaderBits
*7 Gate3[0].Chan[0].P
wmFreqMult
*8 Gate3[0].Chan[0].P
wmDeadTime
*9 Gate3[0].Chan[0].P
ackInData
*10 Gate3[0].Chan[0].P
ackOutData
*11 Motor[1].pPha-
seEnc
3-14
Set value
1 Enable EncTable[1] as single-word (32 bits) read.
Gate3[0].Chan[0].S Assign the digital quadrature encoder data to EncTable[1].
ervoCapt.a
1/exp2(8) Calculate a scale factor set value in accordance with the following for-
mula because EncTable[1] is 32 bits and Gate3[0].Chan[0].ServoCapt
(digital quadrature encoder data) is 24 bits.
Set value :
7 Set the digital quadrature encoder conversion method to four multipli-
cation, counterclockwise.
$fffffc Specify AMP Strobe Word. If $fffffc is set, the Controller is compatible
with all AD converters.
2 Set the header length of analog to digital conversion data to 2 bits.
Set it depending on the Servo Drive specifications.
2 Set the PWM frequency to 15 kHz. Calculate the PWM frequency in
accordance with the formula below.
f =
PWM
f
IntPhase
Make sure that the value is 40 kHz or less and the same as the Servo
Drive maximum input frequency or less.
3.1/0.0533 Set the dead time of the PWM signal to 3.1 µs. Calculate the dead time
with the following formula.
Dead time = 0.0533 μs × Gate3[0].Chan[0].PwmDeadTime
Set it depending on the Servo Drive specifications.
0 AdcAmp compression: Disabled
If the digital current loop is implemented, enable data compression that
improves algorithm efficiency.
Disable it this time.
0 Disable PWM/DAC compression.
If commutation and digital current loops are calculated, data compres-
sion improves the efficiency of the algorithm and should be enabled.
Disable it this time.
Gate3[0].Chan[0].P Use the digital quadrature encoder for commutation position feedback.
haseCapt.a
Description
1
2 (32 bits -24 bits )
Gate3[0].Chan[0].PwmFreqMult+1
2
: Internal phase clock frequency
CK3M/CK5M Series Startup Guide DirectPWM Interface (O047)
× f
IntPhase