Pa1_03 Command Pulse Input Method, Format Setting - Fuji Electric ALPHA7 User Manual

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(4)
Do not use the immediate value change function.

PA1_03 Command pulse input method, format setting

No.
Name
Command
pulse
03
input method, form
setting
This parameter is enabled only under position control, and is set for each input pulse frequency and
signal format.
This parameter is used to make a selection for each digit.
Digit
2
The maximum input frequency is 4[MHz] for differential input, and 200[kHz] for open collector input.
However, all signals should be input to ensure that they satisfy the following conditions (the conditions
are the same for signals CA, *CA, CB, and *CB.) In the case of 90° phase difference 2 signals, the
rising or falling edge of the A-phase signal or B-phase signal is countedas 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
Forward rotation command
CA
*CA
CB
*CB
Arrow marks "↑↓" in the figure above indicate the pulse count timing.
Setting range
00 to 12
1
Signal form
0: Command pulse/command code
1: Forward pulse/reverse pulse
2: A/B phase pulse
Input method
0: Differential input
1: Open collector input
t1
t2
t3
t4
T
t6
CHAPTER 4 PARAMETER
Reverse rotation command
t7
t5
Basic Parameters
Default
Change
value
Power
01
supply
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]
4-7
4

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