Atlas Copco PowerMACS 4000, Руководство пользователя

Страница: 366 / 668

Tightening
366 9836 3521 01

Hold torque . This alternative does not stop any ongoing motion. The servo will maintain the torque
it has when the step is stopped. Note! This means that if there is not contradicting force the spindle
will continue to run. This stop condition is used for step types DT - Run until Dyna-Tork
TM
, DT2 -
Run until Dyna-Tork
TM
, method 2, and DT3 - Run until Dyna-Tork
TM
, method 3.

Continue rotation (only available for Gauging)
With this stop condition the spindle will not stop between steps, but instead continue to rotate.
During the time between the steps the restrictions
Torque, Remove fastener torque limit and
Transducer Protection will still be active. The same limits as in the step before will be used.
There will also be a time restriction of 60 seconds for the continue rotation. If any of the limits are
exceeded the spindle will be stopped directly and the fatal error
CROT will be set, together with
error-code for the error that stopped the spindle. Failing Step No will be set to the step before and
the reject settings in this step will be used.
When the next step starts the speed will be ramped to the target speed of that step with the ramp
programmed in this step. If the next step has a different direction compared to the previous step
the direction change will be made with a speed ramp. An event will also be generated to warn the
user that this has happened.
If the evaluation of any checks fails for a spindle that run
Continue rotation the motor will be
switched off and the spindle will roll out to a stop. The same will also happen if another spindle fails
and starts to run reject management. However, if
Allow hold torque also during RM is checked
in the Station Set Up the spindle will continue to rotate in both these cases.
6.5.6.3 Ramps & Other
– Store Position (only available for Gauging)
It is possible to store the current position at the end of each step and later return to this position with the
step
Run to Position .
Set Null position is a combo box with following choices:

Keep old value (default): The null position is not changed

Half pos : The null position is set to the position half way through the step.

Full pos : The null position is set to the current position at the end of the step (after the over shoot
time has passed)
Set Half position is a checkbox. If checked the half position will be set to the position half way through
the step, otherwise the half position will not be changed. Default value is not checked.
Half position is defined as half the angle from step start (after backlash is done) to step stop (the angle
there the braking of the spindle begins).
In Program Settings-Settings there is a checkbox Reset Position . If checked all four position registers
(Null, Half, Peak and Low) will be cleared at cycle start, otherwise the positions stored in a previous cycle
will be kept.
Any movement between the programs will be measured and the distance to the position registers will be
updated accordingly.