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2 SPECIFICATIONS
2.3 Specifications of Interfaces with External Devices of the RD77MS
27
2
Manual pulse generator/Incremental synchronous encoder input
■
Specifications of manual pulse generator/incremental synchronous encoder
*1 Set the signal input form in "[Pr.24] Manual pulse generator/Incremental synchronous encoder input selection".
Item
Specifications
Signal input form
A-phase/B-phase (Magnification by 4/Magnification by 2/Magnification by 1),
PULSE/SIGN
Differential-output type
(26LS31 or equivalent)
Maximum input pulse frequency
1 Mpulses/s (After magnification by 4, up to 4 Mpulses/s)
Pulse width
1
s or more
Leading edge/trailing edge time
0.25
s or less
Phase difference
0.25
s or more
Rated input voltage
5.5 V DC or less
High-voltage
2.0 to 5.25 V DC
Low-voltage
0 to 0.8 V DC
Differential voltage
0.2 V
Cable length
Up to 30 m (98.43 ft.)
Example of waveform
Voltage-output type/Open-collector
type (5 V DC)
Maximum input pulse frequency
200 kpulses/s (After magnification by 4, up to 800 kpulses/s)
Pulse width
5
s or more
Leading edge/trailing edge time
1.2
s or less
Phase difference
1.2
s or more
Rated input voltage
5.5 V DC or less
High-voltage
3.0 to 5.25 V DC/2 mA or less
Low-voltage
0 to 1.0 V DC/5 mA or more
Cable length
Up to 10 m (32.81 ft.)
Example of waveform
A-phase
0.5
μ
s or more
1
μ
s or more
B-phase
0.25
μ
s
or less
0.25
μ
s
or less
0.5
μ
s or more
0.25
μ
s
or more
(Note): Duty ratio 50%
A-phase
2.5
μ
s or more
5
μ
s or more
B-phase
1.2
μ
s
or less
1.2
μ
s
or less
2.5
μ
s or more
1.2
μ
s
or more
(Note): Duty ratio 50%
Содержание MELSEC iQ-RD77GF16
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