SD710 Series Servo Drive User Manual Chapter 3 Wiring and Installation
16
3.5.1 Position Command Input Signal
Table 3-8 Position command input signal description
Signal Name
Pin
number
Function
Position
command
PULSE+
PULSE-
SIGN+
SING-
41
43
37
39
Low-speed pulse command
input method.
①
Differential drive input
②
Open collector input
Input pulse pattern.
①
Dir pulse
②
A and B phase quadrature
③
CW/CCW pulse
HPULSE-
38
36
High-speed input pulse command
HSIG-+
HSIGN-
42
40
High-speed position command symbols
PULLHI
35
External power input interface for command pulses
GND
29
Signal Ground
The upper unit measures the command pulse, i.e., the symbol output circuit, which can be selected from either the
differential driver output or the open collector output. Its maximum input frequency, i.e., minimum pulse width, is shown
in Table 3-9.
Table 3-9 Correspondence between pulse input frequency and pulse width
Pulse mode
Maximum frequency (PPS)
Minimum pulse width (
μ
s)
Low speed
Differential
500k
1
Collector open circuit
200k
2.5
High-speed differential
4M
0.125
Attention
●
The upper unit output pulse width that is less than the minimum pulse width value will cause the
driver to receive pulses incorrectly.
！
