EMSD5 AC Servo Manual
Chapter 4 Wiring and Introduction
19
4.4.3 Position Instruction Input Signal
Signal Name
Pin No.
Function
Position
Pulse
Instruction
PULS+
5
High speed photo isolation input.
Working mode is set by parameter PA-14:
⚫
Pulse+direction.
⚫
CCW/CW pulse.
⚫
A
、
B orthogonal pulse.
⚫
Input of internal position control.
PULS-
21
SIGN+
6
SIGN-
22
PULLHI
7
External 24V power input interface of the instruction
pulse.
GND
11/12
Internal digital signal ground.
The output circuit of instruction pulse of the upper device side can be selected from the
differential output or collector open circuit output . Its maximum input frequency and minimum
pulse width are shown in the following table:
Pulse mode
Maximun-frequency (pps)
Minimum pulse width(us)
Differential output
500k
1
Collector open circuit
200k
2.5
Input Circuit Of Pulse Instruction Diagram
1
）
When it is differential mode:
◆
If the output pulse width of the upper device is less than the minimum pulse
width, it will cause the drive to receive error pulses.
◆
The terminal between PULS+ and PULS-/SIGN+ and SIGN- only support
below 5V signal. If over than 5V, it needs to connect external resistances.
