Desoutter Delta Wrench 150 Nm, User Manual, Page: 100 / 184

Part Number
Issue
Date
Page 6159937790
12
03/2018
100 / 184
03/2018 100 (184)
The buzzer is activated as follows:
Buzzer The beep emitted by the buzzer starts when the torque goes over the Cycle
Start value, and it increases its signal when approaching the target.
At the end of the tightening operation three more beeps inform the operator of
the end of the operation; if the result is NOK, the beep is repeated at high
frequency to indicate the error.
For information on the vibration function, refer to the paragraph “Vibration parameter”.
NOTE: Vibration is available only for the following Delta Wrench models: TORQUE/ANGLE
MODELS WITH VIBRO and TORQUE/ANGLE MODELS WITH VIBRO AND WLAN RADIO
MODULE.
6.8.2 Quality Control Strategies
Quality Control strategies are not the strategies used to tighten a screw; they are used to check
tightening operations already performed, measuring the residual torque.
The strategies for evaluating residual torque can be divided in two main categories:
•
Residual Check Angle : it measures the torque necessary to rotate the screw further, measuring
it at the specified angle.
•
Peak Torque : it measures the peak of the torque necessary to rotate the screw further: the
operator must stop as soon as the screw starts rotating.
The paragraphs below describe in detail how the Delta Wrench performs these strategies.
6.8.2.1 Residual Torque/Angle Automatic
This strategy evaluates the residual torque on a joint, measuring the torque necessary to rotate the
screw further.
Min Torque
Max Torque
Angle threshold
Cycle start
Torque
Angle
Change screw at
Residual Torque
CASE A
Residual Torque
CASE B