Fuji Electric ALPHA5 Smart, User Manual

Page: 182 / 636

CHAPTER 4 PARAMETER
4-14
Basic Parameters
4
PA1_08 Number of output pulses per revolution
No. Name Setting range
Default
value
Change
08
Number of output
pulses per
revolution 0: Electronic gear (PA1_06/07) is enabled.
16 to 262144 [pulses]: Number of output pulses per
revolution is enabled.
2048 Power
Enter the number of pulses output per motor rotation from pulse output terminal (A-phase or B-phase).
As the output format applies A/B phase pulse, the setting range is set as follows (multiply by 4 on the
host side).
20-bit motor: 16 to 262144 pulses, 18-bit motor: 16 to 65536 pulses
If the reference value is other than 0, the Z-phase output synchronizes with the A-phase output, and an
output having the same pulse width as that of the A-phase is obtained.
With default value "0," settings of parameters PA1_09 and _10 are followed.
PA1_09 Numerator of electric gear for output pulses
PA1_10 Denominator of electric gear for output pulses
No. Name Setting range
Default
value
Change
09
Numerator of electric gear for
output pulses
1 to 4194304 1 Power
10
Denominator of electric gear for
output pulses
1 to 4194304 16 Power
Specify the ratio of the output pulse per revolution of the servomotor.
If parameter PA1_08 is "0," settings of these parameters are enabled.
Calculate according to the following equation.

In case of an 18-bit encoder, specify "1/32" to output 2048 (65536 x 1/32) A-phase and B-phase
pulses per revolution.

The Z-phase output is issued asynchronously to the A- and B-phases at a constant pulse width of
125µs.
Enter parameters so that PA1_09
≤ PA1_10. If PA1_09 > PA1_10, the division ratio is 1.
PA1_11 Output pulse phase selection at CCW rotation
No. Name Setting range
Default
value
Change
11
Output pulse phase
selection at CCW
rotation 0: B-phase pulse lead at CCW rotation
1: A-phase pulse lead at CCW rotation
0 Power
The phase of the output pulse of the servomotor is adjusted to the traveling direction of the machine.
Select the phase of forward rotation (CCW rotation) of the servomotor.
The pulse is output at connector CN1 (FFA, *FFA, FFB and *FFB).

If the reference value is 0
A-phase
B-phase

If the reference value is 1
A-phase
B-phase