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Example
30 V
PEH
+--
LAF / TAF
28 V
{
Welding head
The value shown in the PEH is 30V. The measured value at the welding head is 28V.
The value for Voltage at head % will in this case be 107% (30/28 = 1,07⇒ 107).
Adjusting the Voltage at head % resultsinanincreaseofthevalueshowninthe
PEH. The Voltage at PEH % must therefore be adjusted.
In order to reduce the value shown on the screen, indicate for
instance 30/32 = 0,94% 94%.
Current at PEH % 100
Voltage at PEH % 94
Current at head % 100
Voltage at head % 107
T ravel speed % 100
Wire speed % 100
Before changing the CALIBRATION MENU, make sure all connectors are properly
fitted.
IMPORTANT!
S In order not to affect the voltage answer through inductance, the voltage
reference cable shall not be laid together with the current cable.
S The calibration shall be carried out by way of the existing cables at a known
load.
In order to get reliable measurement test results a measuring device in accordance
with the British standard BS 7570:2000 must be used.
Note that the system need not be linear within its working r ange.
The linearity is affected by induction and other disturbing factors coming up when
using different welding parameters.
The same adjustment in per cent within the whole range signifies that high values
are more affected than low ones.
GB
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