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Bosch Rexroth AG | Electric Drives and Controls
7
Features
Schedule standard 1000 Hz (schedule parameters in milliseconds)
Fieldbus module: Ethernet IP
(Details refer to Tab1. Required and supplementary documentation,
Rexroth PRC7000 Process Resistance Welding Control Instructions).
7.1
Special features
The timer has the following features:
• Timer has been prepared for networking with an Ethernet IP module
• The „Stop circuit open / no 24 V" fault is automatically reset.
• The DC link voltage is always checked, the fault message is automatically
reset.
• With start dressing function.
7.1.1
Rewelds
Rewelds are not done in UIR- mode, sondern im KSR- bzw. PHA-Betrieb
geschweißt (betrifft Messung, Regelung, Überwachung und Nachstellung).
KSR-current monitoring is futher active, with UI-monitoring without UI-regulation.
7.1.2
KSR selection
When calling up welding programs with
electrode nos.1 through 9, output KSR selection 1 is
•
simultaneously activated.
electrode nos.10 through 19, output KSR selection 2 is
•
simultaneously activated.
electrode nos.20 through 29, output KSR selection 3 is
•
simultaneously activated.
For all other electrode numbers, the KSR selection outputs are not changed.
7.1.3
Output A09 „ New electrode"
The output is set if the welding program selected via the spot selection has an
electrode with the counter state "0" and the electrode parameter
"Dressing new electrode" = Off.
7.1.4
Tip dresser change
The timer has additional counter, which count every tip dress.
This counter can be reset via the programming terminal.
If one counter exceed the programmed prewarning value, then the output "Tip
dresser warning" will be set.
If the programmed maximal value has been reached, the the output "Tip dresser
at end of life" will be set.
If the maximal value "0" is programmed, then the function is disabled.
R911381576 | PRC 7x00-Lx/Wx-403
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