Setting The Initial Parameters For The Servo Drive Unit (High-Gain Specifications); Setting The Standard Parameters - Mitsubishi MELDAS MDS-C1 Instruction Manual

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 "3-2-3 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) Electronic gear related parameters
The setting range of the following parameters, which configure the electronic gears, may be limited
according to the combination. Refer to section "3-2-2 Limitations to electronic gear setting values"
for details.
High-gain specifications
No. Abbrev. Parameter name
Motor side gear
SV001 PC1*
ratio
Machine side gear
SV002 PC2*
ratio
SV018 PIT* Ball screw pitch
Position detector
SV019 RNG1*
resolution
Speed detector
SV020 RNG2*
resolution
Parameters with an asterisk * in the abbreviation, such as PC1*, are validated with the NC power turned ON again.
3. Setup
Set the motor side and machine side gear ratio.
For the rotary axis, set the total deceleration (acceleration) ratio.
Even if the gear ratio is within the setting range, the electronic gears may
overflow and cause an alarm.
Set the ball screw pitch. Set to "360" for the rotary axis.
In the case of the semi-closed loop control
Set the same value as SV020 (RNG2). (Refer to the explanation of
SV020.)
In the case of the full-closed loop control
Set the number of pulses per ball screw pitch.
Detector model name
OHE25K-ET, OHA25K-ET
OSE104-ET,OSA104-ET
OSE105-ET,OSA105-ET
RCN723 (Heidenhain)
Relative position detection
scale
AT41 (Mitsutoyo)
FME type, FLE type
(Futaba)
MP type (Mitsubishi Heavy
Industries)
AT342 (Mitsutoyo)
AT343 (Mitsutoyo)
LC191M (Heidenhain)
LC491M (Heidenhain)
Set the number of pulses per one revolution of the motor end detector.
Detector model name
OSE104, OSA104
OSE105, OSA105
3 - 5
Explanation
Resolution SV019 setting
100,000 (p/rev)
100,000 (p/rev)
1,000,000 (p/rev)
8,000,000 (p/rev)
Refer to specification PIT/Resolution
manual for each detector
The same as
µ
1 ( m/p)
SV018 (PIT)
Refer to specification PIT/Resolution
manual for each detector
Refer to specification PIT/Resolution
manual for each detector
Twice as big as
µ
0.5 ( m/p)
SV018 (PIT)
20 times as big as
µ
0.05 ( m/p)
SV018 (PIT)
Refer to specification PIT/Resolution
manual for each detector.
Refer to specification PIT/Resolution
manual for each detector.
SV020 setting
Setting
range (Unit)
1 to 32767
1 to 32767
1 to 32767
(mm/rev)
1 to 9999
(kp/rev)
100
100
1000
8000
µ
( m)
1 to 9999
(kp/pit)
µ
( m)
µ
( m)
µ
( m)
µ
( m)
1 to 9999
100
(kp/rev)
1000