Mitsubishi LE-40MTB-E - 6 Mechanism Other than; Use of AC Servo Motor

18
6.1 Use of AC servo motor
The system is equipped with the SA-SN terminals for controlling an AC servomotor or a vector inverter mo-
tor that can control torque.
The SA terminal can be connected to some servo amplifiers for the simultaneous multi-reel operation.

Provide the torque command input of the servo amplifier with the following input.
During operation and during normal stop : Torque command SA of the tension controller
Emergency stop : Output from the braking torque controller

Provide the speed limit input of the servo amplifier with the following input.
During operation and during normal stop : Upper speed limit setting
Emergency stop : Set the speed limit input to zero.
• For the setting, use the "ACTUATOR" screen within "SWITCH" on the initial setting screen or the engi-
neer screen.
• In servo mode, the control values of -100% to 100% correspond to the SA output of -5 to 5V. In powder
mode, the control values of 0 to 100% correspond to the SA output of 0 to 5V. The powder mode is
completely no problem if the torque is in one direction.
1. Wiring (example)
Servo amplifier
LE-40MTB-E
Speed Limit input
Upper Limit
Torque Limit
Speed Limit
Torque command
EMG.stop
Normal opelation
Torque input
Upper Limit
SA
SN
2. Setting
A T U A T O R S E L E C T A C T U A T O R
 P O W D E R :  A C S E R V O M O T O R
C
Select "AC SERVO MOTOR".
Setting and changing servo
amplifier parameters
With the servo-on input terminal turned
off, turn on the servo amplifier power
supply. Change the settings of the
following parameters .
• Put the servo loop in torque mode .
• Set the system so that the servo
motor output torque is equal to the
rated torque when the 5V torque
command is issued.
For more details of the wiring and
setting, observe the servo amplifier
instruction manual .
Handling of servo motor
Basic operation check
• Use the upper speed controller to set the speed limit
input. Enter the torque command while the tension
controller is in the manual operation . Then , check if
the motor rotates in the correct direction . Note,
however, that the unwinding motor rotates in the
correct direction when it reverses , because the
material during the unwinding operation pulls it .
• Check that the output torque is adjustable manually to
produce the specified torque even when paper is
running through the system .
In the manual operation , however , the dial readings of
zero to 10 on the manual torque controller correspond
to the output of 0 to 5 V in the manual operation .
6. To use other than one - reel unwinding powder