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ProNet Series AC Servo User's Manual
- 94 -
(5)Reference Pulse Input Signal Timing
Reference pulse signal form Electrical specifications Remarks
Sign+pulse train input
(SIGN+PULS signal)
Maximum reference frequency ：
500kpps (For open-collector output ：
200kpps)
t1 ， t2=0.1µs
t3
，
t7=0.1µs
t4
，
t5
，
t6>3µs
t =1.0µs
(t /T)×100 = 50%
SIGN
PULS
t1
t2
t3
t4
t
T
Forward reference Reverse reference
t5 t6
t7
SIGN
H=forward reference
L=reverse reference
CW pulse+CCW pulse Maximum
reference frequency:500kpps
(For open-collector output
：
200kpps)
t1
CCW
CW
t2
T
t3
t
Forward reference
Reverse reference
t1 ， t2=0.1µs
t3>3µs
t=1.0µs
(t /T)×100 = 50%
Two-phase pulse train with 90° phase
differential (phase A +B)
Maximum reference frequency
：
×1 input pulse multiplier
：
500kpps
×2 input pulse multiplier
：
400kpps
×4 input pulse multiplier
：
200kpps
Reverse reference
Phase B lags B by 90º.
Forward reference
Phase B leads A by 90º.
t1
t2
Phase A
Phase B
T
t
t1 ， t2=0.1µs
t =1.0µs
( t /T)×100 = 50%
A parameter
Pn004.2 can be
used to switch of
the input pulse
multiplier mode.
(6)Connection Example
The pulse train output form from the host controller corresponds to the following:
• Line-driver Output
• +24V Open-collector output
• +12V/+5V Open-collector output
(a)Connection Example for Line-driver Output
Applicable line driver: SN75174 manufactured by TI or MC3487 or the equivalent.
Host controller
Line-driver
*
Servodrive
Photocoupler
PULS
/PULS
30
31
150 Ω
CN1
SIGN
/SIGN
32
33
150 Ω
*
Represents twisted-pair wires
。