Product specifications
Chapter 2 I/O ports
HA-680_V04 - 38 -
(I/O signal functions for speed control)
◆ Connection
Connect the voltage signal to the [CN2-19: speed command:
SPD-COM] and the [CN2-20: SPD-GND].
Because the impedance of the analog command input of HA-680
is low, use an output impedance of 1 Kohms or lower.
If the output impedance is too high, there may be a difference in
voltage between the command and driver sides. If it is
impossible to use impedance below 1 Kohms for reasons of the
system, adjust the difference using the parameters “35: Analog
command A/D value (Mid),” “36: Analog command A/D value
(Max),” and “37: Analog command A/D value (Min).”
Plan the speed command input circuit referring to the examples
below.
◆ Example of external speed command
CN2-20 Speed command ground: SPD-GND (input)
● Function
The port is the common ground for the [CN2-19 speed command: SPD-CMD].
SPD-GND
CN2-20
SPD-CMD
20kΩ
CN2-19
SPD-GND
CN2-19
CN2-20
+10V~
-10V
Ω
SPD-CMD
20kΩ