Tightening
9836 3521 01
277
6.5.2.3 DT3 - Run until Dyna-Tork
TM
, method 3
Step type Id:
35
Parameters
: T (Torque), TI1 (Time1), TI2 (Time2), PERC (Current percentage), DIR (Direction).
Function
:
Run spindle, in DIR direction, until torque is T using transducer control. When the target is
reached a new torque, DT, is calculated as
DT = T * PERC / 100
The torque DT is then retained during the next TI1 + TI2 seconds using current control.
The PERC parameter makes it is possible to Dyna-Tork
TM
at a lower level than the target.
Before the step starts the torque DT is converted to a corresponding motor current using the
spindle parameters
T/C Factor, T/C Correction Factor
and
Gear ratio
. The first part of the
step runs using transducer control. When the torque measured on the torque transducer
used for control reaches T the step switches to current control using the current that
corresponds to DT as set point for the motor servo. This current is then maintained for TI1 +
TI2 seconds.
Note:
To avoid overheating of the spindle it is strongly recommended to never run Dyna-
Tork
TM
to more than 40% of the maximum torque of the spindle.
Result var
.:
This step produces the step level result variables “DT T”, "DT Mean T" and "Relax A".
"DT T" is the torque measured when the torque set point is switched to DT.
"DT Mean T" is the mean torque measured during the second time interval (TI2).
"Relax A" (relaxation angle) is the angle that the bolt moves during the time interval
TI1 + TI2.
Trace
:
Torque T is shown as a horizontal line from step start to step stop in trace when Torque vs.
Time is selected. Control parameters must be enabled in the trace form (see
Содержание PowerMACS 4000
Страница 1: ...User guide PowerMACS 4000 Atlas Copco Tools and Assembly Systems 9836 3521 01 2010 11 Edition 10 3 0...
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Страница 46: ...System Architecture 46 9836 3521 01...
Страница 127: ...Set Up and Maintenance 9836 3521 01 127 See chapter Station Set Up for a description of the parameters...
Страница 267: ...Tightening 9836 3521 01 267...
Страница 400: ...Tightening 400 9836 3521 01...
Страница 422: ...Peripheral Devices 422 9836 3521 01 When connected to a system the form will show show the signal values in realtime...
Страница 486: ...Peripheral Devices 486 9836 3521 01...
Страница 622: ...Peripheral Devices 622 9836 3521 01...
Страница 664: ...References 664 9836 3521 01...
Страница 668: ...9836 3521 01 2010 11 Edition 10 3 0 www atlascopco com...