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Output signals to the robot
Arc stable (cur-
rent flow signal)
This signal is set if the arc is stable after welding has started. The signal informs the robot
control that ignition was successful and the arc is present.
Limit signal This signal is only available when connected to the RCU5000i remote control unit. The sig-
nal is set if there is a limit exceed of actual wirefeed speed value, motor current, welding
current and welding voltage.
Process active Robot sets the “Welding start“ signal:
- Gas pre-flow time elapses
- Arc ignites
- Arc goes out.
- Gas post-flow time elapses.
- Robot resets signal
Informs the robot that welding is still in progress. So, for example, to ensure optimum gas
shielding, the length of time the robot remains in position can be synchronised at the end
of the weld seam.
Main current sig-
nal
This signal shows the main current phase.
Collision protec-
tion
For the most part, the robot torch is fitted with a collision cut-off box attached to the front
of the holder on the robot arm. As soon as the robot arm meets a solid obstacle (compo-
nent, clamping device, etc.), contact with the collision cut-off box is interrupted and sig-
nalled to the system. The control must stop the robot immediately.
Power source
ready
If the power source is ready to weld, this output is switched to HIGH. The signal goes out
and error number 38 is output if:
- an error occurs on the power source
- there is no “power source ready” signal
The exact cause of the error is transmitted to the field bus by means of an error number.
Communication
ready
As a rule, the field bus node is supplied externally, e.g. via the robot control. The “Commu-
nication ready“ signal informs the robot control that the power source is ready for data com-
munication.
Error number When an error occurs (“power source ready“ signal not illuminated), the error number can
help to isolate the cause of the error.
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