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3. Setup
3 - 5
3-2 Setting the initial parameters for the servo drive unit
(High-gain specifications)
The servo parameters must be set before the servo system can be started up. The servo parameters
are input from the NC. The input method differs according to the NC being used, so refer to each NC
Instruction Manual.
3-2-1 Setting the standard parameters
When starting up the system, first set the standard parameters listed in "3-2-2 List of standard
parameters for each servomotor". For the parameters shown below, check the machine and servo
system specifications and determine the setting value.
(1) Basic specification parameters
[1] When performing absolute position control, set SV017/bit7=1. This may be automatically set by
NC system parameter setting, depending on NC model. (Setting on the servo parameter screen
is not valid.)
[2] When performing absolute position control with speed and current synchronous control, set
SV081/bit4=1 for master and slave axes. Also set SV017/bit7=1.
[3] For HA053N, HA13N, HA23N, HA33N motors, if the connector direction of the motor end
detector with motor power connector is 90°, set SV017/bit5=1. If the angle is 180°, use a
standard setting (SV017/bit5=0).
Setting basic specification parameters
High-gain specifications
No. Abbrev.
Parameter
name
Explanation
F E D C B A 9 8 7 6 5 4 3 2 1 0
spm mpt mp abs vdir fdir vfb seqh dfbx fdir2
bit Meaning when "0" is set Meaning when "1" is set
5 vdir
Standard setting HA motor (4 pole motor)
Detector installation position 90
degrees (B, D)
7 abs Incremental control Absolute position control
SV017 SPEC*
Servo
specification
selection 1
F E D C B A 9 8 7 6 5 4 3 2 1 0
pabs rabs
bit Meaning when "0" is set Meaning when "1" is set
4 pabs Normal setting
Speed/current synchronous
control absolute position control
SV081 SPEC2*
Servo
specification
selction 2
Parameters with an asterisk * in the abbreviation, such as PC1*, are validated with the NC power turned ON again.
POINT
Setting of absolute position control (SV017/bit7) may be set automatically by NC
system parameter setting, depending on NC model. In this case, setting on the servo
parameter screen is not valid.