Table of Contents
Advertisement
Electrical connection
<Current Scaling, Primary>
7-30
This function is designed to allow a simplified current scaling process.
With this function, only the primary current is scaled to an external current meter. Unlike
the "standard" current scaling function, the secondary current is not taken into account
here. The automated sequence corresponds to "standard" current scaling. A new <Cur-
rent Scaling, Primary> input has been provided in the I/O assignments for this function.
Prerequisites:
-
Standard current scaling for the respective electrode must have been per-
formed previously.
-
The external weld current meter must have been connected to the 24V inter-
face.
Sequence:
-
The electrode must be selected in the I/O field.
-
The gun assigned must be closed.
-
The <Current Scaling, Primary> input signal must be set.
Now, the timer is in <Current Scaling, Primary> mode. No starts or pro-
gram selections entered in the I/O field will be accepted.
This sequence is the same as the sequence of standard current scaling.
However, only the primary and secondary currents are measured with the
weld current meter. The current of the weld current meter is used as the ref-
erence current to which the primary current is scaled.
-
Upon correct completion of the primary current scaling process, the <Cur-
rent scaling/check finished> signal becomes high and is held until the
<Current Scaling, Primary> input signal is reset.
Primary current scaling involves the re-determination of 1 value.
Toroid sensitivity: Scaling of the primary current to the external weld current meter. This
value is shown under Basic Setup - Electrode Setup in the BOS.
You can view the results of the last primary current scaling operation for the respective
electrode in the "Scaling Results" window under the "Electrode Setup" window in the
BOS. Standard scaling results will be overwritten.
No WC signal is output during a reduced current scaling operation.
If an error occurs:
The notes under "Current Scaling" apply correspondingly.
PSI 6XXX.350 L1
1070 080 067-101 (2001.03) GB
Advertisement
Table of Contents
