FED III
Torque Control Systems

• Powerful processing and control thanks to 32 bits RISC processor onboard

• Automatic recognition of connected driver unit and its individual characteristics (when used together the same generation three A, S or M series driver unit)

• Current controlled Servo motor

• Programmable digital torque setting

• Preset data memory (available in FED only)

• Real-time monitoring and feedback control of operating parameters such as driver motor current, load and rpm

• Stable and reliable power supply to driver unit

• Self-diagnostics and overheat protection

• High Speed board onboard in standard for export

• Virtually shock-free operation

• Low noise, vibration and maintenance

• Reliable regardless of joint characteristic

• Built-in optical encoder

• Custom software

• Two standard interfaces : 24-pin photo-coupler interface for full remote control from your PLC, and serial RS-232C modular jack for flexible customizing of functions and parameters from your PC

• Comprehensive error messages

• Suitable for clean room uses (Class 100)

They are comprised of a 32-bit RISC processor. Both controllers adopt the same fastening process control technology. An optical encoder inside each screwdriver monitors the rotation of the driver motor from the initial rotation until the completion of the fastening cycle. The torque coefficient or factors which influence the torque, is calculated by the controllers software from the continuously monitored electric current to the screwdriver motor and the time factor. The electric current from the controller to the screwdriver motor is based on that continuous analysis, controlled instant by instant. The screwdrivers torque output is in proportion to the controllers electric current output to the screwdrivers motor. The screwdrivers torque curve takes 0.1 seconds and is calculated by a functional circuit until it reaches the target torque. Once the target torque has been reached, it holds that torque for 0.2 seconds to stabilize the torque output.

• PED controller has one channel for setting the torque output as a standard (two channel controller optional). Suitable for control of driver unit in manual operation. It is also applicable for robotics auto application of simple screw tightening.
  

• FED controller installed on a robot can catch and loosen an already seated (fastened) screw, and has a memory for 8 preset fastening torque settings and 8 preset angle settings. Suitable for robotics auto applications. It is also applicable for control of driver unit in manual operation, utilizing memory facility and/or with remote control combined. Facilities available in FED III are :

  • Preset memory

  • Reversing parameter setting and control

  • Idle mode (low torque & slow speed) to engage with already seated screw

  • Multi-sequence program mode
    

• Both controllers can be used for manual and automatic application

1. STATE-OF-THE-ART MULTIPLE FEEDBACK CONTROL
   Technart’s state-of-the-art multiple feed back control technology makes best use of 32 bits RISC processor for real-time monitoring and control of screw tightening torque and process.
2. RELIABLE CONTROL OF TIGHTENING TORQUE AND PROCESS
   PEDIII (PEDIII-h) monitors and controls motor current, motor voltage and motor rpm, to control screw tightening torque and process. It guarantees reliable repeatability of torque applied to screws, regardless joint characteristics and frictional differences in actual applications.
3. COMMUNICATION WITH DRIVER
   PEDIII (PEDIII-h), when powered on, automatically recognizes the connected driver and its individual mechanical characteristics. A particular matching of a controller and a driver does not need to be maintained.
4. MEMORY FOR DRIVER TORQUE FAMILY DATA
   PEDIII (PEDIII-h) can contain three different data of driver torque family. When, for instance, PEDIII (PEDIII-h) contains torque family data 3600/8500/12K, any of 3600, 8500 or 12K family driver can be connected and used with it right away, without any manipulation.
5. DIGITAL TORQUE SETTING
   Set a tightening torque digitally, and all the rest are taken care by PEDIII (PEDIII-h) automatically, for best control of screw tightening at the torque for most applications.
6. SELF-DIAGNOSTICS AND OVERHEAT PROTECTION
   PEDIII (PEDIII-h) protects herself from any damage caused by overheat due to repeated high load operations in too short an interval.
7. COMPREHENSIVE ERROR MESSAGES
   Every part inside the system and every stages of screw tightening process are under comprehensive monitoring.
8. TWO STANDARD INTERFACES
   Two interfaces are available in standard : a 24-pin photo-coupler interface and a serial RS-232C modular jack, for control and monitoring the system from external PLC or PC.
9. CUSTOMIZING OF FUNCTIONS AND PARAMETERS
   Many of functions and parameters can be customized, to best suit your specific applications, via RS-232C interface from Technart Customizer software running on your PC.
10. HIGH SPEED TIGHTENING CONTROL
    Model PEDIII-h carries High Speed control board (standard specification for export) and provides high speed screw tightening, effective for most applications.