Io Modules; Special Features; Start Tip Dress; I Warning - Bosch PRC 7 00-L /W 402 Serie Typspezifische Anleitung

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7.1.2

IO modules

I/O Module : ProfiNet/IO
(Details refer to Tab1. Required and supplementary documentation,
Rexroth PRC7000 Process Resistance Welding Control Instructions).
MGDM: Sercos
(Details refer to Tab1. Required and supplementary documentation, Rexroth
PRC7000 MGDM).
7.2

Special features

7.2.1

Start tip dress

The function start tip dress is activatable via a timer parameter.
If the start tip dress is activated for one electrode, then after acknowledge of a tip
change will be done immediately a tip dress request.
7.2.2

%I warning

After each welding schedule a phase angle monitoring will be done. The mean
phase angle will be compared with the electrode parameters
• Upper %I limitation
• Upper %I warning
• Lower %I warning
If one of the limits will be exceeded, then will be output a warning.
This warning remains present until the next tip dress / tip change or until reset of
the %I actual values via the user interface.
7.2.3

Transformer temperature

The input transformer temperature (MGDM) will be monitored during the
schedule.
Low-level lead to error message.
7.2.4 Monitoring „ Pressure monitor air"
Outside of the welding schedule the inputs „ Pressure monitor air" will be
monitored (source: both IO modules HIP).
If one of the inputs change to 0, then will be set an error, which will be
automatically reset, as soon as the input change again to 1.
If the stop circuit is open (US2 missing), then will be set no fault.
7.2.5

Lamp test

With active lamp test the following outputs will be set:
• Tip dress warning gun position 1 / 2
• End of stepper gun position 1 / 2
R911381739 | PRC 7x00-Lx/Wx-402