Mitsubishi LE-40MTA-E, Instruction Manual

Page: 17 / 58

13
5.2 Use of stall setting (output when operation is stopped)
Stall output is a constant torque given during the automatic control to the machine while it is stationary. At
this stage, the feedback control does not take place. This torque is the initial torque for the machine to start
with in the automatic control.
• When Run/stop signal MC1 is turned off to stop the material, the stall memory retains the control output
values used immediately before the stop. The system resumes the operation using the memorized
control output values to stabilize the tension in the material.
The stall memory function is a part of the basic functions, no need to be specially set.
• When changing materials, for example, the stall memory is reset to the output values appropriate to the
initial material diameter. These output values are called the stall setting value.
The system uses an EEPROM memory to keep the stall memory values even when the power supply is
turned off. No reset operation takes place even when the power supply is turned off or automatic or manual
modes switching is performed.
• Two methods are available to reset
the stall memory value as follows:
• An output on/off switch is used to re-
set the stall memory value.
• Stall memory reset input MC4 con-
tacts are used for reset.
In either case, the switch is normally
turned on when the reel is changed.
• When the initial setting "MC4 + OUT.
SW" at the "STALL RESET" screen is
selected (see page 9), the control
output is switched from "ON" to
"OFF" by the output on/off switch on
the panel at the time of changing the
material. The stall memory value will
be preset to the stall setting value.
• When MC4 is kept "on" for approximately 0.5 second or longer, the stall memory value is preset to the
stall setting value.
• The manual torque controller is used to set the stall setting value in the initial setting. Therefore, the
manual torque value will be the stall setting value (stall torque value) in the automatic control.
SA
EAP
P
Internal
stall setting
Selection
of terminal
MC4
AI3
AI4
-
Large side:
Preferenced
Tension detection
Target tension
Stall memory
Items in square : Setting on panel surface
Stall memory reset command
Stall setting value
0~100% output against 0~5V
Memory
Reading
Torque control output
External
stall setting
SA
EAP
P
Internal
stall setting
Selection
of terminal
MC4
AI3
AI4
-
Large side:
Preferenced
Tension detection
Target tension
Stall memory
Items in square : Setting on panel surface
Stall memory reset command
Stall setting value
0~100% output against 0~5V
Memory
Reading
Torque control output
External
stall setting
1. Resetting stall memory value
ON
Operation input MC1
ON
Stall memory
Main reel speed
Control output
Stall seting
value
MC4 input or
output on/off switch
(On when reel is exchanged)
Stall memory value
Stall seting
value
2. Entering stall setting value