YASKAWA SGM Series User Manual page 261

Settings
11.3.1 Setting User Constants
11.1 Characteristics when Shipped
11
11.2 Resetting
11.3 Adjusting Servo Performance
11.3.1 Setting User Constants
The speed reference (feed speed) characteristics when shipped are as outlined below.
Speed Reference Motor Speed Characteristics
Conditions: No load
Rotation speed (r/min.)
+1500
−204800
−1500
If settings must be reset because of application or usage conditions, reset them in according to
Chapter 6" MECHATROLINK Communication".
J Position Loop Gain (Cn-001A)
Position loop gain is ideally determined by the specifications of the equipment, but initially
set a level lower than the desired value. (The factory setting is 40 (l/s).)
J Load Inertia (Cn-0003)
Set the load inertia for the moment of inertia ratio on motor shaft. (This constant is factory set
to 100 (%), which is equivalent to the motor inertia.)
Feed speed
(reference units/s)
204800
11 -2