Supplement - Mitsubishi LE-40MTA-E Instruction Manual

11.6 Supplement

1. Rough estimate of minimum drive tension
The minimum drive tension which can be driven in torque controller can be requested by next outline
type. When this is graphed, it is a right picture.
⎯⎯⎯⎯ ≥ 8.5 ( ⎯⎯ )
W + 0.2
f : Minimum drive tension(‚m)
w : Maximum reel weight (ton)
v
⎯ : De-and acceleration degree
t
2. Sliding timer
The function is used to execute the operation smoothly, for prevention of undershoot due to sudden de-
crease of tension when the mode is changed from manual control mode to the automatic control mode.
It is determined automatically during operation.
The sliding timer is determined automatically in accordance with the following equation.
Sliding timer
= [{(Tension detected during manual operation) – (Target tension for automatic operation)}
/ full-scale tension]
f V
t
MANU
× 25 sec.
300
200
100
0
Sliding timer
Time
AUTO
52
De-and acceleration degree
30
25
0 0.5 1.0
Maximum reel weight W (ton)
20
15
10
1.5