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Bosch Rexroth AG
Features
Tip dress in status tip dress request:
Tip dress outside status tip dress
Electrode Tip change:
In status "tip dress request" the output "GunX_Motor release" is set. Now a weld
program or a tip dress program can start:
• If the input „Initiator-tip dress" is active, the control selects automatically a tip
dress program with the next start signal independent of the program selection
of the guns (program 4 with gun 1_Start or program 8 with gun 2_Start).
• If the input „Initiator-tip dress" is not activ, the control takes the program
following program selection together with the Start from the selected gun.
In status "Tip dress – Stop" the output "GunX_Motor release" is set. Now only a tip
dress program can get selected. The input "Initiator-tip dress" must be set for
running of the tip dress program.
No other programs will be start able.
The other gun can not get started yet.
The tip dress program finishes following the programmed times or until the
according input "GunX Acknowledge Tip Dress" becomes active if the
acknowledge signal occurs earlier then the programmed time. Thus, this
acknowledge signal can finish the sequence of Tip dress before the programmed
end.
At the end of the sequence (regular or shortened) the output "GunX_ Solenoid
Valve" is reset by the weld control. The output " GunX_Motor Release" remains
for further 1.5 sec before it will be reset. During this time no new start is accepted
from any gun.
After the acknowledge signal and after reset of the output "GunX_Motor Release"
the control resets the output "GunX_ Tip Dress Request". Now, the internal spot
and tip dress counter will be actualized and the normal sequence is available
again.
The tip dress is every time possible via the input „Individual Tip dress" – also out
request:
of the tip dress request mode of the control independent of the status of the
electrodes.
With the input „Individual Tip dress" active the control sets both outputs "Gun X_
Tip Dress Request" continuously high and the weld control is in status "Tip –dress
stop". The outputs "GunX_Motor Release" are also set. With the next start at a
gun the gun the specific tip dress program will run automatically. After the tip
dress procedure the acknowledge signal "GunX Acknowledge Tip Dress" is
necessary for positive confirmation and reset of the internal spot and tip dress
counter. If there is no positive confirmation the counter status of the according
guns remain with the actual values. Without the positive confirmation the
"Individual Tip dress" procedure does not effect the electrode status independent
of the tip dress actions.
The input "GunX Acknowledge Tip Dress" results in a reset of the counters and
the status of the electrode, if the last started program with this according
electrode was the tip dress program (gun 1: prog. 4, gun 2: prog. 8). After a tip
dress program was started, the tip dress acknowledgement is accepted only
once.
The output "GunX_ Tip life Warning/Exp" flashes if the wear counter is at the end
after the last tip dress step of the electrodes entering the prewarning level. If the
welding goes on the wear counter gets to the programmed max. value and the
output "GunX_ Tip life Warning/Exp" is set continuously.
In status prewarning or latest in status max. tip life the electrode tips must be
changed. The executed tip change is acknowledged by the input "GunX
Acknowledge Tip Change". With this acknowledge signal the internal spot and tip
dress counter of the control will be reset.
The input "GunX Acknowledge Tip Change" is only accepted if the according
electrode is in status "prewarning" or "max. tip life". Otherwise the acknowledge
signal is without functionality.
• Change outside of the status „prewarning" or „end of stepper"
R911174862 | PSI 6xCx.179
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