Electric screwdriver control unit TPU-A3

with displayfor vizualization of process and manufacturing dataregulating

CONTROL UNIT TPU-A3
The TPU-A3 control unit manages and controls all functions of paired eTensil brushless electric screwdrivers with integrated torque transducer and hall-angle sensors. Torque and angle are detected electronically to ensure process traceability and inline verification.

MAIN CAPABILITIES

• In-process torque adjustments via the operator panel.
• End-of-cycle display: detected TORQUE, measured ANGLE, OK/NOK status and tightening TIME.
• Process anomaly detection (e.g. stripped threads, pre-tightened screws) by monitoring cycle parameters.
• Remote control and communication with PLCs or external devices.
• Poka Yoke functionality to verify presence of elastic gaskets, rubber elements or similar during assembly.
• Phase and system status reporting for integration into production lines.

FUNCTIONS

• 8 programs for tightening control.
• 1 programmable sequence up to 8 steps.
• Retention function: programmable wait interval between programs.
• Automatic tool recognition and configuration.
• Screw counting for Poka Yoke verification.
• Min/Max tightening time control – Poka Yoke system.
• Adjustable untightening speed.
• 2-level password protection for parameter safeguarding or full system lock.
• Unit calibration.
• Selectable measurement units: Nm / Lb / In. / Kgf.cm.
• Language selection: IT, EN, DE, FR, ES, TR.
• Serial communication (RS232).
• Stores results of last 99 tightenings.
• Interfacing with workstations and peripheral devices.
• Remote program selection via I/O.
• Min/Max tightening angle control – Poka Yoke system.
• "Program Source" mode to manage program selection from external devices.

SMART FUNCTIONS

• SMART THREAD: for self-threading, self-tapping or self-drilling screws and cases where final torque is lower than thread-forming torque.
• SMART SPEED: two-phase tightening strategy — high speed until set angle, then reduced speed for accurate final torque control; improves repeatability on very rigid joints.

ADDITIONAL FEATURES

• Tightening direction: clockwise or counterclockwise.
• Front illumination LED with adjustable intensity 0–100%.
• Soft start: adjustable acceleration ramp for easier screw engagement.
• Tool speed adjustable within min/max range.

TIGHTENING STRATEGIES

• Torque control.
• Torque control with tightening time monitoring.
• Torque control with tightening angle monitoring.
• Torque control with time and angle monitoring.
• Angle control with torque and time monitoring.
• Time control with torque and angle monitoring (stop-by-time tightening).
• Prevailing torque monitoring.
• Average (rolling) torque monitoring.

SPECIAL STRATEGIES

• PRE-AUTO UNTIGHTENING: set untightening angle and pause before subsequent tightening.
• POST-AUTO UNTIGHTENING: configure untightening angle and pause after tightening end.
• STOP-BY-TIME TIGHTENING: control cycle by set tightening time for depth-based tightening.
• SMART TORQUE PROGRAMMING: torque limit that halts cycle to prevent unsafe conditions.
• PREVAILING TORQUE: average-torque monitoring over threading angle with configurable thresholds; can report Peak and/or Average Torque.
• AVERAGE TORQUE MONITORING (ROLLING): angle-based test function for component integrity checks (e.g. bearings).

FEATURES (SUMMARY)

• I/O ports: 8 inputs / 8 outputs programmable (21+22 signal types).
• 7 LEDs for immediate process status display.
• ESD certified.
• Power cable included.
• Supply: 230 Vac ±10% 50-60 Hz (technical data: 100–240 Vac).
• Extended warranty: 2 years or 1,000,000 cycles.

APPLICATIONS
Designed for industrial environments requiring high-accuracy tightening and full process control. Reduces post-process inspections and supports inline quality assurance on assembly lines.

Technical specifications

• Model: TPU-A3
• Code: 686200116
• Cable length: 3 m
• Dimensions: L 185 x P 150 x H 105 mm
• Compatible tools/units: eTensil E8CA...A
• Input: 8
• Operating voltage: 32 Vdc
• Output: 8
• Supply voltage: 100 - 240 Vac - Available 120V too
• Type: Control unit
• Weight: 0.8 kg (1.76 lb)