Information contained in this document is the property of ATI Industrial Automation, Inc. and shall not be reproduced in
whole or in part without prior written approval of ATI Industrial Automation, Inc. The information herein is subject to
change without notice and should not be construed as a commitment of ATI Industrial Automation, Inc. This manual is
periodically revised to reect and incorporate changes made to the F/T system.
In consideration that ATI Industrial Automation, Inc. (ATI) products are intended for use with robotic and/or automated
machines, ATI does not recommend the use of its products for applications wherein failure or malfunction of an ATI
component or system threatens life or makes injury probable. Anyone who uses or incorporates ATI components within
any potentially life-threatening system must obtain ATI’s prior consent based upon assurance to ATI that a malfunction
of ATI’s component does not pose direct or indirect threat of injury or death, and (even if such consent is given) shall
indemnify ATI from any claim, loss, liability, and related expenses arising from any injury or death resulting from use of
ATI components.
All trademarks belong to their respective owners. EtherCAT® is a registered trademark and patented technology, licensed
by Beckhoff Automation GmbH, Germany.
Note
Please read the manual before calling customer service. Before calling, have the following
information available:
1. Serial number (e.g., FT01234)
2. Transducer model (e.g., Axia80, etc.)
3. Calibration (e.g., US-120-95, etc.)
4. Accurate and complete description of the question or problem
5. Computer and software information. Operating system, PC type, drivers, application
software, and other relevant information about your conguration.
Compound LoadingAny load that is not purely in one axis.
Coordinate FrameSee point of origin.
DINTA 32-bit data type representing a signed integer.
DoFDegrees of freedom. See six degrees of freedom.
EtherCATAn industrial automation eldbus.
FoE
ForceThe push or pull exerted on an object.
FSFull-Scale.
F/TForce/Torque.
F/T TransducerThe device that converts force and torque into an electrical signal.
FxyThe resultant force vector comprised of components Fx and Fy.
Full-Scale Error
Hysteresis
IP60Ingress protection rating “60” designates protection against dust.
ISRInterrupt service routine.
MAP
MAX. Single-Axis Overload
Measurement Uncertainty
MomentAn object that receives a torque has a moment applied to that object.
Offset Compensation
Overload
PDO
The act of measuring a transducer’s raw response to loads and
creating data used in converting the response to forces and torques.
A statement that says the equipment measures correctly. These
statements mean the equipment has been tested against national
standards. The statements are produced as a result of calibration or
re-calibration.
CANopen over EtherCAT is the preferred embedded protocol for
conguring EtherCAT devices. Used within SDO to encode the
conguration data.
File access over EtherCAT, the preferred embedded protocol for
uploading new rmware to EtherCAT devices.
A measurement of sensing error. For example, if the calibrated
measurement range of a sensor is 100 Newtons and the sensor is
accurate to within 1 Newton, that sensor will have a Full-Scale Error of
1% (1% = 0.01 = 1 N / 100 N).
A source of measurement error caused by the residual effects of
previously applied loads.
The Mounting Adapter Plate (MAP) is the transducer plate that attaches
to the xed surface or robot arm.
The largest amount of load in a single axis (all other axes are unloaded)
that the transducer can withstand without damage.
The maximum expected error in measurements, as specied on the
calibration certicate.
Correction of errors that change the zero point of a transducer’s
readings.
The condition where more load is applied to the transducer. This will
result in saturation.
Process Data Object, a protocol for reading and writing real-time
process information cyclically.
Point of OriginThe point from which the transducer measures all forces and torques.
The way the continuously variable transducer signal is converted into
Quantization
discrete digital values. Usually used when describing the change from
one digital value to the next.
RAMRandom access memory.
Torque applied that does not result in movement. For example, if a user
Reaction Torque
twists a screw or bolt but the fastener does not move. ATI transducers
sense reaction torque.
The periodic verication of measurement equipment, like transducers,
Re-Calibration
calipers, and voltmeters, to prove it still measures correctly. The
equipment may be adjusted if it doesn’t measure correctly.
Resolution
The smallest change in load that can be measured. This is usually
much smaller than accuracy.
Torque resulting in something moving. Generally this refers to the
Rotary Torque
torque on things like drive shafts. ATI transducers cannot sense
rotational torque.
Saturation
SDO
The condition where the transducer has a load or signal outside its
sensing range.
Service Data Object, a protocol for reading and writing conguration
information acyclically.
Six Degrees of FreedomFx, Fy, Fz, Tx, Ty , and Tz.
SGStrain Gage.
STRING(8)A data type representing (8) characters, using (8) bytes.
STRING(30)A data type representing (30) characters, using (30) bytes.
TAP
Tool Adapter Plate (TAP) is the transducer surface that attaches to the
load to be measured.
TorqueThe measurement of force exerted on an object causing it to rotate.
Transducer
Transducer is the component that converts the sensed load into
electrical signals.
TxyThe resultant torque vector comprised of components Tx and Ty.
UDINTA (32) bit data type representing an unsigned integer.
UINTA (16) bit data type representing an unsigned integer.
USINTAn (8) bit data type representing an unsigned integer.
The safety section describes general safety guidelines for the product(s), an explanation of the notications found
in this manual, and the safety precautions applicable to the product(s). More specic notications are embedded
within the sections of the manual where they apply.
1.1 ExplanationofNotications
The notications included here are specic to the product(s) covered by this manual. The user should heed
all notications from the robot manufacturer and/or the manufacturers of other components used in the
installation.
DANGER: Notication of information or instructions that if not followed will result in
death or serious injury. The notication provides information about the nature of the
hazardous situation, the consequences of not avoiding the hazard, and the method for
avoiding the situation.
WARNING: Notication of information or instructions that if not followed could result
in death or serious injury. The notication provides information about the nature of the
hazardous situation, the consequences of not avoiding the hazard, and the method for
avoiding the situation.
CAUTION: Notication of information or instructions that if not followed could result in
moderate injury or cause damage to equipment. The notication provides information
about the nature of the hazardous situation, the consequences of not avoiding the
hazard, and the method for avoiding the situation.
NOTICE: Notication of specic information or instructions about maintaining, operating,
installation, or setup of the product that if not followed could result in damage to equipment. The
notication can emphasize but is not limited to specic grease types, good operating practices,
or maintenance tips.
1.2 General Safety Guidelines
The customer should verify that the transducer selected is rated for maximum loads and torques expected
during operation. Because static forces are less than the dynamic forces from the acceleration or declaration
of the robot, be aware of the dynamic loads caused by the robot.
WARNING: Performing maintenance or repair on the sensor, while circuits (e.g. power,
water, and air) are energized could result in serious injury. Discharge and verify all
energized circuits are de-energized in accordance with the customer’s safety practices
and policies.
CAUTION: Modifying or disassembly of the sensor could cause damage and void the
warranty. Use the supplied mounting adapter plate and the provided tool side mounting
bolt pattern to mount the sensor to the robot and customer tooling to the sensor. Refer
to Section 9—Drawings for more information.
CAUTION: Using fasteners that exceed the customer interface depth penetrates
the body of the sensor, damages the electronics, and voids the warranty. Refer to
Section 9—Drawings for more information.
CAUTION: Probing openings in the sensor causes damage to the instrumentation.
Avoid prying into openings of the transducer.
CAUTION: Do not overload the transducer. Exceeding the single-axis overload values
of the transducer, causes irreparable damage.
CAUTION: Do not contact the IP60 seal. Contacting the seal can cause the sensor to
malfunction.
CAUTION: The sensor should be protected from impact and shock loads that exceed
rated ranges during transport as the impacts can damage the sensor’s performance.
Refer to Section8—Specications for more information about rated ranges.
CAUTION: Avoid damage to the sensor from Electro-Static Discharge. Ensure proper
grounding procedures are followed when handling the sensor or cables connected to
the sensor. Failure to follow proper grounding procedures could damage the sensor.
The Axia80 EtherCAT F/T sensor system measures (6) components of force and torque (Fx, Fy, Fz, Tx, Ty, Tz) and
streams data to customer devices that use EtherCAT eldbus. Refer to Section 5.1—PDO Interface.
The mounting side attaches to a mounting adapter plate, which mounts to the customer robot. The tool side attaches
to the customer tooling. Both the mounting and tool sides have a 71.12 mm bolt circle pattern with (6) M5 tapped
holes. Refer Section 9—Drawings for more information. The sensor is IP60 rated. A M8 6-pin male connector is for
power and EtherCAT. For the pin assignments, refer to Section 3.5—Pin Assignment for the EtherCAT and Power
Connection.
The Axia80 sensor provides the following features:
•Resolved force and torque data (refer to Section 5.1—PDO Interface)
•Set bias and clear bias
•Programmable low-pass ltering
•LED indicator for Run, EtherCAT Link, and Transducer Status. Refer to Section 2.1—LED Self-Test
The EtherCAT F/T provides (3) LEDs for EtherCAT Link, Run, and Sensor Status. When the user applies
power, the sensor completes a self-test, during which the LEDs under rmware control individually turn on.
2.1.1 LED Self-Test Sequence
When the user applies power to the sensor, the sensor completes a self-test, during which the LEDs
under rmware control individually turn on in the following sequence: