Troubleshooting
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02.00 | FT-AXIA 80 EtherCat | Assembly and operating manual | en | 1009369
8 Troubleshooting
The information in this section should answer many questions that
might arise in the field. Customer service is available for problems
or questions not addressed in the manuals.
8.1 Errors with Force and Torque Readings
Inaccurate data from the transducer’s strain gages can cause er-
rors in force/torque readings. These errors can result in problems
with transducer biasing and accuracy. Listed in the following table
are the basic problems of inaccurate data.
Problem
Solution
Noise
Jumps in force torque data readings (with the sensor unloaded)
greater than 0.05% of full scale counts is abnormal. Noise can be
caused by mechanical vibrations and electrical disturbances, pos-
sibly from a poor ground. Noise can also indicate component fail-
ure within the system. Make sure that the DC supply voltage for
the Axia80 sensor has little to no noise superimposed. The sensor
should be grounded through installation construction.
Drift
After a load is removed or applied, the raw gage reading does not
stabilize but continues to increase or decrease. A shift in the raw
gage reading is observed more easily in the resolved data mode
using the bias command. Some drift from a change in temperat-
ure or mechanical coupling is normal.Mechanical coupling occurs
when a tool plate contacts the sensor body, for example, debris
between the tool adapter plate and the sensor body or in applica-
tions such as hoses and wires attached to a tool.
Hysteresis
When the sensor is loaded and then unloaded, gage readings do
not return quickly and completely to their original readings. Hys-
teresis is caused by mechanical coupling (explained in Drift sec-
tion) or internal failure.
Sensor not streaming
measurement data to
the customer devices
that use EtherCAT
fieldbus.
Verify the sensor is correctly installed. Ensure the robot mounting
and tool adapter plates are installed on the proper side of the
sensor
Installation
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