Pa1_03 Command Pulse Frequency, Form Setting - Fuji Electric Alpha7 VV User Manual

CHAPTER 4 PARAMETER

PA1_03 Command pulse frequency, form setting

No.
Command
03 frequency,
setting
This parameter is enabled only under position control. Set this parameter for each input pulse
frequency and signal form.
This parameter should be selected for each digit.
4
Digit
The maximum input frequency is 4.0 MHz at differential input or 200 kHz at open collector input.
However, enter each signal so that the following conditions are satisfied (the same signal conditions
apply to CA, *CA, CB and *CB). In case of A/B phase pulse, the rising or falling edge of the A-phase
signal or B-phase signal is counted as a single pulse, so that a single-pulse input is equivalent to four
pulse counts.
 Command pulse / sign (reference value of parameter 03: □0)
The command pulse indicates the rotation amount (CA, *CA), while the command sign (CB, *CB)
indicates the direction of rotation.
If (CB) is at the low level and (*CB) is at the high level, a forward direction command is issued.
• Differential input
Arrow marks "↑↓" in the figure above indicate the pulse count timing.
4-10
Basic Parameters
Name
pulse 00 to 22
form
2 1
Signal form
0: Command pulse/sign
1: Forward/reverse pulse
2: A/B phase pulse
Input frequency
0: 1 MHz or less
1: 200 kHz or less
2: 4 MHz or less
Forward rotation command
t1 t2
CA
*CA
t3 t4
T
CB
*CB
Setting range
Reverse rotation command
t6 t7
t5
Default Change
value
01 Power
t1 ≦ 0.025 [μs]
t2 ≦ 0.025 [μs]
t3 ≧ 0.125 [μs]
t4 ≧ 0.125 [μs]
t5 ≦ 0.025 [μs]
t6 ≧ 0.5 [μs]
t7 ≧ 0.5 [μs]
T ≧ 0.25 [μs]