Desoutter CVI3 Function, User Manual, Page: 20 / 44

Appendix - I/O and events_02/2017 - 20 -
Name Description Raising condition Falling condition
Tool main start
trigger
Reflects the raw state of tool main course start trigger,
independently from the Tightening Unit state.
Trigger is pushed. Trigger is released
Tool push start
or front start
trigger
Reflects the raw state of tool push start or front start trigger,
independently from the Tightening Unit state.
Trigger is pushed. Trigger is released
Manual reverse
in progress
The operator has selected the reverse direction on the tool and
is running the tool.
Manual runreverse
selected and trigger
pushed.
Stays on as long
as the operator is
running the tool
Fastener
loosened
There is a fixed minimum torque value to declare that the
fastener was "loosened".
Run reverse
Result generation.
New start (tool trigger
or external start)
Tube nut open Indicates that the tube nut is open.
The tool can be removed from the assembly.
- Tool running
Tool
maintenance
alarm
Reflects the different tool maintenance alarm state with or
condition.
Tool maintenance
alarm 1 or 2 is active.
No tool maintenance
alarm is active.
Invalid spindle
settings
Tool characteristics does not match Pset parameters (e.g.
negative jog times or contradictions, torque over the maximum
tool torque range, speed over the maximum tool speed,
maximum tool torque range, etc…)
Pset selection or tool
connection.
Tool disconnection or
new Pset selected.
Span failure When starting a tightening, before running the tool, the
controller checks the torque span.
"Span failure" indicates that the span drifts by ±3% or more,
causing a tool lockout.
This fault can be due to the torque transducer or the tool
electronics.
The only solution is to replace the tool.
Span failure detection. Disconnecting tool
or new check without
fault.
Offset failure Indicates the offset (0 point) drifts by 50 % of full scale or
more.
This error exists when, at the beginning of the Pset, the torque
transducer is seen to have 50 % or more of full-scale torque
prior to even starting the motor. With an "Offset failure", the
controller cannot adequately compensate for this transducer
error and, therefore, will not allow a tightening operation to
occur.
The only solution is to replace the tool.
Offset failures can come from a severely damaged torque
transducer, a bad field cable or a bad controller.
Offset failure detection Disconnecting tool
or new check without
fault.
Motor over
temperature
Indicates that the temperature of the tool motor windings has
exceeded the temperature threshold.
An error message remains.
Temperature
threshold:
- 100°C for fixed tools
- 60°C for portable
tools
The signal turns
off as soon as the
temperature returns
below the threshold
(minus hysteresis =
10°C).
Angle
measurement
fault
Drive detected angle sensor fault.
It can be an angle sensor fault, a tool electronic fault or a
combination of both.
The communication is tested permanently.
As soon as the fault disappears, the signal turns off.
Angle fault detection. Disconnecting tool
Angle
measurement
fault
Drive detected angle sensor fault.
It can be an angle sensor fault, a tool electronic fault or a
combination of both.
The communication is tested permanently.
As soon as the fault disappears, the signal turns off.
Angle fault detection. Disconnecting tool
No tool
connected
Indicates that the controller is not detecting the tool.
Controllers are designed to work with a range of fastening
tools. The tools have an Intelligent Tool Interface (ITI) board
which is continuously sending status information to the
controller. If the controller requests status information from the
tool and gets no response, the controller software turns on the
"No tool connected" output.
This output resets immediately upon successful
communication with a tool.
No tool connected or
tool not recognized
Tool connected and
recognized.
Redundancy
error
Redundancy error in case of operational control transducer
and faulty monitoring transducer.
Result generation Use of "reset of
redundancy error"
input, change of tool
free of this error