PED III Series

PED III & FED III
Torque Control Systems

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

Torque Drivers

The systems table shows the torque range for the M-Series (hand operated). The RPM is automatically selected in accordance with the torque value you program in the controller.

Each model has the ability to switch to either standard or high speed using the customized software.

If you require any specific RPM for a certain fastening torque, please feel free to contact a customer service representative. We need to know your specific fastening torque in use, so we can determine if the RPM you require can be achieved.

M-Series Drivers
with automatic recognition

The M-Series driver units have a forward/reverse with a lever type on/off switch that activates the motor. The M-Series drivers can be connected to both the PED III and FED III controller and is used in hand operated applications. The M-Series drivers are equipped with a 1/4 female quick-change chuck. The FH model is equipped with a bit cushion mechanism. The bit has a moveable range of 10mm in the axis direction. The driver unit can keep the same bit pressure anywhere within the moveable range.

S-Series Drivers
with automatic recognition

The S-Series driver units have a forward/reverse with a lever type on/off switch that activates the motor. The S-Series drivers can be connected to both the PED III and FED III controller and is used in hand operated applications. The S-Series drivers are equipped with a 4mm diameter D-Cut quick-change chuck. The FD model is equipped with a bit cushion mechanism. The bit has a moveable range of 10mm in the axis direction. The driver unit can keep the same bit pressure anywhere within the moveable range.

A-Series Drivers
with automatic recognition

The A series driver is intended for application of remote control operation installed in robotics.  It is designed to minimize particles, static charge and magnetic noise emission.  It is suitable for cleanroom application. Vacuum suction for screw pick-up also collects particles emitted during screw fastening. Optional bit cushion mechanism minimizes shock to delicate work-piece.

Continuous Bit Grounding Mechanism (see ESD solution) is also available optionally for most ESD-sensitive environments.

Two types of bit mount are prepared in standard : 4 mm diameter. D-cut (half-moon) shank bit mount (for M1 to M3 small screws) and 6.35 mm (1/4 inch) HEX shank bit mount (for M4 to M5 screws). Both adopts one-touch quick change chucking mechanism.

The A-Series driver unit's power and direction are controlled by either the PED III or the FED III controller and are used for automatic applications. The FD and FH models are equipped with a bit cushion mechanism. The bit has a moveable range of 10mm in the axis direction and +/- 1 mm (from bit center) in the circumference direction (360°). The driver unit can keep the same bit pressure anywhere within the moveable range.

For most critical ESD sensitive environments, what we can offer optionally is Continuous Bit Grounding Mechanism. Conductivity of the bit is continuously maintained even during the driver motor and bit rotation, with less than one ohm.

Available for A series, S series and M series driver units.

Model Number Configuration

The product line-up offers several choices to meet your requirements. The following will explain how to specify a model.

System (a controller + a driver unit) =

	Controller Models: PED III and FED III
	Model Series: M, S and A
	Driver Unit Models: 1200, 2200, 3600, 8500, 12K, 15K, 20K and 30K
	Configurations: SD, FD, SH, and FH

Example: PED III-M 8500-SH

Bit Sleeve & Guide
A bit sleeve is unique to the application. In order to complete the order for your system, we require:

• Sample of a fastener or dimensions of fastener
• Specific driver style being used
• Shank diameter
• Special requirements i.e. space restrictions

Custom Options and Settings

User-friendly Windows 95/98/NT^® based software is available to customize the functions and parameters of the PED III or FED III controller.

Custom Functions

• LED (for M and S drivers)
• Screw binding release
• Trigger switch and forward/reverse switch (for M and S drivers)
• Dual torque: Manual or Auto change-over (for PED III)
• Slow start for initial engagement to minimize shock and cross threading of fasteners.

User Parameter Settings

• Changeable unit measure (kgf.cm, N.m, Lbf.in)
• Driver unit LED functions
• Standard speed fastening setting
• High speed fastening setting
• Holding time of peak torque (0-200ms)
• Screw binding release function parameters
• Reversing parameters (FED III only)
• Idle mode parameters (FED III only)
• ATC (Auto Torque Compensation) fine-tuning to adjust the mechanical characteristics of the driver unit.

Multi-Sequence Operation

A programmable multi-sequence operation without a PLC (FED III) is available with the customized software.