Setting The Coordinate System; Coordinate System Selection; Setting The Reference Units Per Machine Revolution - YASKAWA SGD7S Product Manual

12.1 Setting the Coordinate System

12.1.1 Coordinate System Selection

12.1

Setting the Coordinate System

You must set whether the SERVOPACK is used with a linear machine or a rotary machine. If a
rotary system is specified, you can clear the current position to 0 each time the machine
revolves one time.

12.1.1 Coordinate System Selection

You must change the setting of this parameter to use a rotary machine. If you specify a rotary
system, you can set the unit for the current position and other values (for example, to 0.001°)
by setting the gear ratio and the number of reference units per machine revolution. Also if you
specify a rotary system, the valid range for software limits and other settings will be one
machine revolution.
PnB12

12.1.2 Setting the Reference Units per Machine Revolution

If the SERVOPACK is connected to a machine with a rotary coordinate system, the number of
reference units per revolution of the machine can be set in PnB13 so that the current position is
automatically cleared to 0. For example, if an electronic gear is set for a reference unit of
0.001°, the current position will be given between 0.000° and 359.999°.
The setting of this parameter is ignored when a linear coordinate system is specified.
PnB13
12-2
Parameter
   
b.
   
b.
Reference Units per Machine Revolution
Setting Range
1 to 1,500,000
Use the SERVOPACK with a machine with a linear coordinate
0 system.
(Default setting)
Use the SERVOPACK with a machine with a rotary coordinate
1 system. You can set PnB13 so that the current position will
be cleared to 0 after each revolution of the machine.
Setting Unit Default Setting
1 reference unit
Meaning
When Enabled
360,000 After restart