Chapter 6 Control Mode of Operation ASDA-A2R Series
Revision December, 2014
6-15
6.3 Speed Mode
Speed control mode (S or Sz) is applicable in precision speed control, such as CNC
machine tools. This servo drive includes two types of command input, analog and register.
Analog command input can use external voltage to control the motor speed. There are two
methods in register input. One is used before operation. Users set different value of speed
command in three registers, and then use SP0, SP1 of CN1 DI signal for switching. Another
method is to change the value of register by communication. In order to deal with the
problem of non-continuous speed command when switching register, a complete S-curve
program is provided. In close-loop system, this servo drive adopts gain adjustment and
integrated PI controller and two modes (manual and auto) for selection.
Users can set all parameters and all auto or auxiliary function will be disabled in manual
mode. While in auto mode, it provides the function of load inertia estimation and parameter
adjustment. In auto mode, parameters which set by users will be regarded as the default
value.
6.3.1 Selection of Speed Command
There are two types of speed command source, analog voltage and internal parameters.
The selection is determined by CN1 DI signal. See as the followings.
Rotary Motor
Speed
Command
No.
CN1 DI Signal
Command Source Content Range
SPD1 SPD0
S1 0 0 Mode
S
External
analog
command
Voltage deviation
between V-REF
and GND
-10 V ~ +10V
Sz N/A
Speed command
is 0
0
S2 0 1
Register parameters
P1-09 -60000 ~ 60000
S3 1 0 P1-10 -60000 ~ 60000
S4 1 1 P1-11 -60000 ~ 60000
Linear Motor
Speed
Command
No.
CN1 DI Signal
Command Source Content Range
SPD1 SPD0
S1 0 0 Mode
S
External
analog
command
Voltage deviation
between V-REF
and GND
-10 V ~ +10V
Sz N/A
Speed command
is 0
0
S2 0 1
Register parameters
P1-09
-15999999 ~
15999999
S3 1 0 P1-10
-15999999 ~
15999999
S4 1 1 P1-11
-15999999 ~
15999999
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