Product manual

PIB Process Interface Board
44
PIB-M2001_eng.fm
The start of the running of the program is blocked until acknowledged. Trying to
start before acknowledgement will result in the Run Chain relay opening and the
G-stop chain breaking. The reset procedure must then be repeated.
To prevent the PIB remaining in the reset function - due to circuit interruption, for
example - and to ensure that a further collision will stop the robot, the reset time is
limited to 1 minute. After that the G-stop is interrupted again and the reset proce-
dure must be repeated.
What is said above applies both to manual running of the robot and to running by
way of the program. When running the robot by way of the program there appears
an additional error message, expressly indicating that the collision sensor has been
activated.
The error messages are:
Message 1: PIB error, warning:
Welding Gun has crashed. If gun still crashed, reset from wire
feed.
Move robot with joystick. Not allowed to start prg.
Message 1 comes up in combination with a G-stop with the welding gun remaining
in the wrong position.
Message 2: PIB error, warning:
Welding Gun has been reset.
Message 3: PIB information:
Gun back to normal position after being down.
Messages 2 and 3 will come up after restart in this order. If the collision is of short
duration and the gun breaks only momentarily and springs back again, message 1
will not be displayed. Messages 2 and 3 will be displayed, however.
6.11.3 Machine Safety - Electronics
PIB is designed to withstand the short-circuiting of the outputs and overloading of
the motor regulator.
The overloaded output is switched off. The function resumes when the power sup-
ply is switched on again after the power supply to the PIB has first been cut and the
overload eliminated.
The motor regulator is protected by a current limiter on the drive stage.
Units connected to the PIB are also protected as the max. and min. data can be con-
figured, for example, max. reference for the power source, max. speed of the con-
nected wire feed unit.
As evident from the section Diagnostics – Error Handling on page 40 an error
message is displayed to demand a proposed action.The weld process is not inter-
rupted.