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Electrical connection
<Current scaling>
Mains
Figure 19: Current scaling setup
7-24
<Current scaling> is designed to compensate for variations in the values measured for
current check and control. <Current scaling> must be performed whenever a system
component (WT, electrode holder, etc.) has been replaced.
The following components are required:
-
welding gun monitoring unit with current sensor S
-
reference current meter
NOTE
A current meter is required to measure the reference current.
U1
V1
W1
A
D
U1 V1 W1
3/PE~
R
2/
U2 V2
V24
~
2/PE
~
+
-
X3
U2
V2
secondary current I
actual current I
Current sensor S
PSI 6XXX.350 L1
reference current I
Reference
current I
ref
sec
monitoring unit
act
Current sensor S
chk
chk
BOS-5000
local PC:
optional input of actual
current values I
ref
kA
Reference
current meter
ref
Electrodes
1070 080 067-101 (2001.03) GB
sec
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