Atlas Copco ACTA 4000 Torque Analyzer Operation and Calibration Guide

None: No controller, manually input target value

Other controller: Non Atlas Copco controller, manually input controller readings

Focus2000/PF2000: Automatic Reading via RS232

DS/DL: DS/DL series controllers

PF3000/PF4000: Automatic reading via RS232 or Ethernet (ACTA 4000)

PowerMACS: Automatically read via RS232 or Ethernet

In synchronous mode, ACTA displays both sensor values and controller values after each tightening, and calculates the difference (Diff) to verify the deviation between the tool and the sensor.

3.3 ISO 5393 standard performance testing

ISO 5393 is an international standard for evaluating torque dispersion of tightening tools. ACTA has built-in testing process:

Select ISO 5393 → Standard/Custom in Qprog

Tighten each of the four test joints 25 times in sequence (high torque hard joint, high torque soft joint, low torque hard joint, low torque soft joint)

ACTA automatically calculates the combined mean torque, mean offset, and combined torque dispersion

Print or export ISO 5393 report

This test is of great value for tool procurement acceptance and regular performance verification.

Advanced Programming - Customized Measurement Parameters

For measurement tasks with specific requirements, it is necessary to enter the Program menu for detailed configuration.

4.1 Measurement Strategy

Peak (DD): The default strategy measures the peak torque during the tightening process. Suitable for direct drive tools and clutch tools, reset time can be set to ignore clutch noise.

Static installed torque: used for static inspection of torque wrenches, ACTA automatically recognizes the moment when the bolt head starts to rotate (inflection point), without the need for the operator to stop accurately.

Multistage: Used for automatic calibration of scenes, the ACTA control controller completes multi-stage measurements of "forward twist → reverse 720 ° → reverse target angle" to obtain high-precision angle values.

Break away: Used for online measurement of preset wrenches, storing peak values before slip torque occurs.

Peak (Pulse): Used for pulse tools to simultaneously measure peak torque and pulse number/frequency.

4.2 Key parameter settings

Cycle start [torque]: Tighten the cycle start threshold

Cycle complete [torque]: Cycle end threshold

Start angle [torque]: the starting point for angle measurement

Measure angle to: selectable to peak torque, peak angle, or cycle complete

End time [ms]: The waiting time after the cycle is completed, and if it exceeds the time limit, it is determined that the cycle has ended

Slip torque: Break away strategy defines' how much torque drop is considered released '

4.3 Statistics and Batch Settings

In Prog → Statistical setup:

Batch size: defines the number of tightening cycles for a single batch, and ACTA displays the batch result (OK/NOK) after completion

Subgroup size/frequency: grouping parameters used for SPC control charts

Torque/Angle Min/Max: Qualified product torque/angle upper and lower limits

LCLx/UCLx: Control upper and lower limits of subgroup mean

LCLr/UCLr: Control upper and lower limits of subgroup range

CM/CMK>: Minimum Requirements for Process Capability Index

When the batch result pops up, if a parameter exceeds the standard, the corresponding value will flash and prompt. The operator can click on Torque/Angle/Pulse to enter the corresponding statistics window to view details.

Database and tool management

The QC and AA versions have built-in tool databases that support:

New tool: Create a new tool and copy all the settings of the current tool

Select tool: Select the current measurement tool from the list

Delete tool: Delete the selected tool and all its measurement data

Clear all measurements: Clear all tool measurement data (automatically archive historical statistics to History)

Backup tool: Before adjusting the tool, backup the current tool data (including all tightening records and history), add the suffix "[#]" to the backup tool name, and it cannot be used for measurement

Information: View the total number of tools in the database, the number of tools containing measurement data, remaining/total memory, etc

The History function saves the historical records of mean (X), range (R), and standard deviation (σ) after clearing measurement data each time. Each tool can store up to 5 sets of historical data for tracking tool performance trends.

Tool calibration - closed-loop quality assurance

The tool calibration function of ACTA is used to compare the deviation between the tool/controller combination and the reference sensor, and calculate new calibration coefficients.

6.1 Manual Calibration Process

Connect ACTA with the target tool/controller to complete synchronization settings

Select the tool to be calibrated in Datab → Select tool, press SHIFT+CI to clear old data

Perform at least 25 tightening cycles (recommended quantity) and record the results

Go to Conf → Calibration → Tool to view the mean deviation

Select Read (read current coefficient), Edit (manually modify coefficient), or Store (store new coefficient) based on the controller type

The system automatically creates a backup tool (original tool name+[0]), and retains the original data for comparison