2 - 37
2 SYSTEM CONFIGURATION
(d) Manual pulse generator/Incremental synchronous encoder input
1) Specifications of manual pulse generator/incremental synchronous
encoder
Item Specifications
Signal input form Phase A/Phase B
Differential-
output type
(26LS31 or
equivalent )
Maximum input pulse frequency
(Note-1)
1Mpps (After magnification by 4, up to 4Mpps)
Pulse width 1µs or more
Leading edge/trailing edge time 0.25µs or less
Phase difference 0.25µs or more
High-voltage 2.0 to 5.25VDC
Low-voltage 0 to 0.8VDC
Differential voltage 0.2V
Cable length Up to 30m (98.43ft.)
Example of waveform
(For 1Mpps)
Phase A
Phase B
(Note): Duty ratio 50%
0.5 s or more
1 s or more
0.5 s or more
0.25 s or more
0.25 s or less 0.25 s or less
Voltage-output/
Open-collector
type
Maximum input pulse frequency
(Note-1)
200kpps
(After magnification by 4, up to 800kpps)
Pulse width 5µs or more
Leading edge/trailing edge time 1.2µs or less
Phase difference 1.2µs or more
High-voltage 3.0 to 5.25 VDC
Low-voltage 0 to1.0VDC
Cable length Up to 10m (32.81ft.)
Example of waveform
(For 200kpps)
Phase A
Phase B
(Note): Duty ratio 50%
1.2 s or less
1.2 s or less
1.2 s or more
2.5 s or more 2.5 s or more
5 s or more
(Note-1): The maximum input pulse frequency is influenced by the leading/trailing edge time of the input waveform.
Countable frequencies are shown below.
t t
Maximum input pulse frequency Up to 1Mpps Up to 500kpps Up to 200kpps Up to 100kpps
Leading/trailing edge time (t)
(A-phase, B-phase input common shared)
0.25µs or less 0.5µs or less 1.25µs or less 2.5µs or less
To Next Page
Loading...
