Bosch Rexroth PRC 7 00-L-0301-Serie Typspezifische Anleitung Seite 64

64/92 Bosch Rexroth AG
Input/output array
Number PRC7000 inputs
7 Reset fault with WC
8
External ignition off
9
Gun resistance adjustment
10
New data for spot selection
11
Not used_Byte_1_Bit3
Description
• This signal is used to reset a pending fault message.
• If the system is error-free, the error status of the system is reset and
no process repeat is started.
• The output Weld Complete is only set if the "Start 1" signal is present
and the welding cycle is not active.
• Note: As long as the stop circuit is open, e.g. due to the opening of
safety doors, the error reset is ignored, i.e. the timer remains in the
error state.
With the safety door closed, this self-acknowledging error is reset.
Movements of the gun actuators possible!
Bruises possible!
Therefore, make sure that can be damaged by movements of the

gun actuators no one.
This signal indicates to the timer that the next welding cycle must be
performed without current, (weld = off).
• If this signal is set during a weld start, the gun resistance is readjusted
as long as it remains within the monitoring limits.
• The gun resistance is updated in the gun parameters "Current gun
resistance" and in the "Test value gun resistance" (if this was set to
0).
• The reference value is also updated in the resistance monitor block of
the active Weld job.
• Note: In the selected spot
the spot usage "Tip check" is set,
–
a corresponding monitor block must be available in the WeldJob
–
and the electrode wear = 0.
–
• The robot first selects a new spot number at the corresponding timer
inputs.
• Then it sets the input "New spot selection".
• This input requests the timer to read out the new spot number, to
prepare the corresponding welding program and to set the program
dependent timer outputs ("Without welding process monitoring or
without stepper", "With ignition", "Force setpoint, "Sheet thickness",
"Start tip dress request", "Tip dress request", "Prewarning", "End of
stepper") accordingly.
• Then the weld timer sets the output "Data for spot selection valid".
• If the timer was able to find the spot number in the spot table or a
sequence was selected directly, the welding timer also sets the output
"Spot selection valid", otherwise it is reset.
• If the robot recognizes the output "Spot selection data valid", it can
evaluate the relevant outputs of the welding timer. In addition, it must
remove the "New spot selection" input.
• The welding timer will then remove the outputs "Spot selection data
valid" and "Spot selection valid".
• After execution of a service program, the spot selection must be
carried out again.
• Otherwise the error message "PLC Spot selection changed" will be
displayed.
R911405013 | PRC 7x00-Lx/Wx-0301
CAUTION