Chapter 4 Differences In Sequence Operation; Stall Memory; Differences In Operation - Mitsubishi Electric LE-40MT Series Handbook

4
DIFFERENCES IN SEQUENCE OPERATION
This section describes the differences in sequence operation.
4.1

Stall Memory

Stall memory is a function to memorize the control output at the moment when the operation/stop command has changed
from operation to stop. In unwinding and winding control, in case the system stops while the material on the reel shaft is not
completely finished, the control output at the moment the system makes a stop is memorized. When it restarts, automatic
control can be continued with the stored control output as stall output.

Differences in operation

Model
Stall memory operation
Stall memorystall setting switch
Operation at power OFF
Operation when the power is
turned ON.
LE7-40GU-L
LE-30CTN
Stall setting
Manual 1 setting
Control output
Running/Stopped
Stall (output) memory
LE-40MTA(-E)
LE-40MTB(-E)
Stall setting
Control output
Running/Stopped
Stall memory reset
When LE-30CTN(A) is used
The term output memory used in LE-30CTN(A) has been changed to stall memory in LE7-40GU-L (the sequence operation
remains unchanged). In the LE-30CTN(A) there is no setting parameter called stall setting and the control output at stop is
manual 1. By entering the same setting % as LE-30CTN(A) 's manual 1 in the stall setting of LE7-40GU-L, the same output
operation can be performed as in the LE-30CTN(A).
4 DIFFERENCES IN SEQUENCE OPERATION
20
4.1 Stall Memory
LE-40MTA, B(-E)
Runstop (MC1)
Stall memory reset (MC4) to ON or
control output to OFF
Stall memory value held
Stall memory value held
When stall (output) memory is performed
Stop timer
Stall (output) memory
ON
ON
Stop timer
Stall memory value
ON
LE-30CTN(A)
With stall (output) memory input turns ON and state changes from run to stop
Stall (output) memory input turns from ON to OFF
Output memory if power OFF with stall (output) memory input ON
Output memory continued if power OFF with stall (output) memory input ON
When stall (output) memory is not performed
Stop timer
ON ON
Stop timer
Stall memory value
ON ON
LE7-40GU-L
Stop timer Stop timer
ON
Stop timer Stop timer
ON
ON