Chapter 1 Outline
PAGE 1-3
1-2. Outline of Functions
The Handheld Nutrunner is a flexible fastening tool equipped with a compact, high-performance
servomotor developed especially for this product. Like the usual high-performance nutrunner system, it
is designed to accommodate various tool models and provide useful functions for fool-proofing, data
management, data communication, etc.
☆ Compact Design
The Unit operates on single-phase 100V ~ 240V, making installation work related to the primary
power source easy.
☆ Screw Fastening
Screw fastening can be performed by the torque method or the angle method. An angle monitor
and a torque rate monitoring function are provided as functions for fool-proofing. Also, a fastening
counting function is interlocked with line control to prevent neglecting of fastening.
☆ Internal storage of 64 set value types
Full digitization was pursued to achieve volume reduction.
64 types of fastening set values can be input from the front panel and stored in the Unit.
Also, changing work (parameters) can be performed by external signals.
A backup battery is not used and there is thus no need to worry about problems such as battery
run-out, etc. (There is no need to worry about disappearance of the set values and other data).
☆ Data Communication
An RS-232C interface is incorporated to enable date communication with external devices.
A connector that enables communication with a PC with a dedicated software installed is provided
on the bottom. Connectors enabling sending of result data to a PLC or other external device are
provided on the bottom.
As an optional function, a D-NET, P-BUS or other fieldbus can be installed.
☆ Motor
Reduced equipment size and improved protection against dust and oil have been achieved by
adoption of a permanent magnet motor.
Also, accommodation of poor-condition environments has been made possible by adoption of a
resolver system.
☆ Preamplifier
Modularized high-precision torque signal amplification and transmission functions and a TOOL-ID
function are incorporated in the tools.
The weak signal of the torque transducer is amplified to minimize the effects of electrical noise, etc.,
on the signal.
☆ Self-Check Function
Each time a fastening operation starts, a calibration check of the torque transducer is performed to
check functions including those of the Unit and the cables to prevent abnormal fastening of bolt nuts,
tool breakage, etc.
☆ Abnormal Condition Display
When an abnormality occurs, the corresponding abnormal state No. is displayed on the front panel.
S0140185-H
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