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MHT258a (Engl.)
6-14
6.2.3 Frequency dividing output
The pulse count in proportion to motor rotational quantity will be output.
The output pulse count can be set for the freq. dividing output terminals [FA], [*FA], [FB], [*FB], [FZ], and [*FZ]. The output pulse count is
common to position control, speed control and torque control.
Pulse width : t11
≧
1
μ
s (equivalent to 500kHz)
A-phase and B-phase signals are 50% duty.
The output pulse counts of A-phase and B-phase signal are determined by system para. 79 setting.
Z-phase signal is output one pulse per revolution. The pulse width depends on the A-phase output pulse count.
A-phase signal and Z-phase signal are synchronized. Recommended output frequency is approx. 500kHz. The output frequency is not
restricted by the amplifier.
The position of the motor output shaft has no relation with Z-phase.
RYS
□□□
S3 - VVS
RYS
□□□
S3 - VSS
System parameter 79
Para.
Name
Setting range
Initial value
Change
79
Output pulse count
16 to 16384 [pulse/rev] (in increment of 1)
2048
Power
The freq. dividing output pulse count per one rotation of motor is set. The output form is two 90° phase-different signal.
When the motor rotates forward, a B-phase advanced pulse is output. This does not depend on the rotational direction changeover setting
(system para. 80)
Two 90° phase-different signal is output based on the level at the time of power on.
Max. output frequency depends on the performance of IC (differential driver: AM26LS31 or equivalent) for output terminal. The output
frequency is not restricted by the amplifier.
A-phase [FA]
t
11
A-Phase [*FA]
B-Phase[FB]
B-Phase[*FB]
Z-Phase[FZ]
Z-Phase[*FZ]
t
11
−
25
−
23
*FZ
21
*FB
19
*FA
17
BAT−
15
−
13
MON1
11
M24
9
OUT2
7
CONT5
5
CONT3
3
CONT1
1
M5
12
MON2
10
P24
8
OUT1
6
CONT4
4
CONT2
2
24
−
22
FZ
20
FB
18
FA
16
BAT+
14
26 M5
−
*CA
36
*CB
34
*FA
32
*FB
30
*FZ
28
OUT3
26
CONT8
24
CONT2
22
P24
20
NREF
17
TREF
15
M5
13
P10
11
M5
9
OUT4
7
OUT1
5
CONT5
3
CONT3
1
M5
18
MON1
16
MON2
14
BAT+
12
BAT−
10
OUT5
8
OUT2
6
CONT6
4
CONT4
2
CA
35
CB
33
FA
31
FB
29
FZ
27
M5
25
CONT7
23
CONT1
21
M24
19
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