Features; Special Features; Special Function "Electrode Gun Life; Cutter Change - Bosch Rexroth PRC 7 00-L /W 300 Serie Typspezifische Anleitung

R911342600 | PRC 7x00-Lx/Wx-0300
7

Features

Sequence standard 1000 Hz (sequence parameters in milliseconds)
I/O Module and programming interface: ProfiNet I/O
(Details refer to Tab1. Required and supplementary documentation, Rexroth
PRC7000 Process Resistance Welding Control Instructions).
7.1

Special features

The welding controller features the following specifics:
• The control is prepared for the administration of up to 10000 welding tasks.
• No function: "Weld without command".
• The "Stop circuit open / no 24 V" fault is automatically reset..
• The DC link voltage is verified outside the sequence, the fault message is
automatically reset.
• The time within the current has to exceed a minimum threshold is adjustable. If
this threshold is not exceeded on average, the sequence is stopped and an
error message occurs.
• With start tip dress request function
7.1.1

Special function "Electrode gun life""

Each electrode is assigned a gun life counter. With each spot welded, this
counter is incremented by the proper wear value. The monitoring parameters of
the gun life are input for each electrode by programming the additional values
"gun wear warning" and "maximum gun wear". When the gun wear reaches the
"gun wear warning" or "maximum gun wear" values, a suitable status message
will be output. If "maximum gun wear" = 0 has been programmed, the function is
not active and wear is not registered.
7.1.2

Cutter change

The timer has additional counters that count each tip dress performed on each
electrode. These counters may be reset through the PRI7000 user interface. If a
counter exceeds a programmed prewarning value, the "Prewarning dresser
blade" output will be set. When the programmed maximum value is reached, the
"End of stepper dresser blade" output will be set. The function is switched off if
the value "0" is specified as maximum value.
Bosch Rexroth AG 43/50
Features