Atlas Copco Power Focus 4000

Pset
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7.7.1 One stage
Tightening is performed in One
stage until the P113 Final target
torque has been reached.
7.7.2 Two stage
In a Two stage tightening, the
tool operates at high speed
during the first stage and a lower
speed during the second stage.
The tool stops for about 50
milliseconds between the stages
to reduce joint relaxation and
then accelerates for the second
stage.
In this example the strategy ends
with a P105 Zoom step, which
reduces the risk of overshooting.
Torque
Tool
speed
1. P110 Cycle start
2. P113 Final target
3. P130 Soft start speed
4. P135 Step 1 ramp
5. P131 Step 1 speed
6. P115 Cycle complete
1.
2.
Time
5.
4.
3.
6.
Torque
Tool
speed
1. P110 Cycle start
2. P111 First target
3. P113 Final target
4. P130 Soft start speed
5. P135 Step 1 ramp
6. P131 Step 1 speed
7. P136 Step 2 ramp
8. P132 Step 2 speed
9. P105 Zoom step
10. P115 Cycle complete
1.
3.
2.
9.
Time
8.
7.
6.
5.
4.
10.