Mitsubishi Electric MELSERVO-J5 - Page 502

500
8 NETWORK FUNCTION (SSCNET III/H) [B]
8.2 Application function
■Travel direction setting
Travel directions of the mechanical system may differ among a controller command, master axis, and slave axes. Set the
travel direction with [Pr. PA14 Travel direction selection] to align the directions that the mechanical system travels along.
Failure to configure settings in accordance with the procedure may cause overload or other problems as the servo motor
generates a reverse direction torque against the direction that the mechanical system moves in.
*1 Setting "1" will reverse the polarity.
The following shows an example of setting the travel direction of a platform truck with one master axis and three slave axes.
To set the servo motor rotation direction in accordance with the moving direction, the torque command polarity for slave axis 1
should be the same as that of the master axis and the polarity of slave axes 2 and 3 should be reversed from the master axis.
Servo parameter Symbol Name and function
PA14 *POL Travel direction selection
• For master axis
Select a servo motor rotation direction of the master axis for the controller command.
0: Servo motor CCW rotation in the positioning address increasing direction
1: Servo motor CW rotation in the positioning address increasing direction
• For slave axis
Select a servo motor rotation direction of a slave axis for the command from the master axis.
0: The torque command polarity from the master axis is used as is.
1: Reverses the torque command polarity from the master axis.
Axis [Pr. PA14]
Master axis 0
Slave axis 1 0
Slave axis 2 1
Slave axis 3 1
+
--
[Pr. PA14]
[Pr. PA14]
[Pr. PA14]
+
-
+
-
+
-
+
-
+
S
POL
POL
POL
[Pr. PA14]
POL
Controller
Master axis
Slave axis 1
Slave axis 2
Slave axis 3
Position control Speed control Current control
Current control
Current control
Current control
0 or 1
*1
0 or 1
*1
0 or 1
*1
0 or 1
*1
CW
CCW CCW
CW
Slave axis 2
Slave axis 1Master axis
Slave axis 3
Moving direction