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Electrical connection
<Pressure check>
!
7-34
This function allows you to verify whether the programmed actual force value F
reached at the electrodes.
Additionally, a check is performed as to whether the electrodes reach the programmed
pressure threshold value at the specified command pressure P
time. This allows to identify any mechanical changes that may have occurred in the weld
gun.
If the pressure threshold is not reached in the scheduled time, a warning or error mes-
sage is displayed on the BOS-5000 weld operator interface.
If a deviation from the tolerance band programmed in the BOS-5000 occurs, an error
message is generated and the <Ready> state of the timer is reset.
Various new parameters have been introduced for this function:
<Pressure check tolerance band> (command value)
<Pressure check before weld time> (command value)
<Program number of last check> (actual value)
<Command pressure> (command value)
<Final value of output pressure> (actual value)
<Time to pressure> (actual value)
Additionally: Graphical pressure profile of last pressure check.
CAUTION!
Please make sure that all individuals stay clear of the danger zone of the welding
gun.
NOTE
Please make sure that the electrode pressure is stable during measurement.
Sequence of automatic <Pressure check>:
Prerequisite:
-
The pressure gauge must be connected to the assigned terminals.
Sequence:
-
The spot to be selected must be entered in the I/O field
-
The <Pressure check> input signal must be set.
Now, the timer is in power check mode. No start commands or program selections en-
tered in the I/O field are accepted.
-
The timer waits until the start signal level equals 0 (essential for error han-
dling).
-
The base pressure value of the program assigned to the selected spot is set
and the <Operate> signal is output.
-
The timer waits for the <Start> signal.
PSI 6XXX.350 L1
in kN is
act
within a specified
com
1070 080 067-101 (2001.03) GB
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