Design and function
Access control
42
299-020200-TWD01
14.07.2017
Item Pin
Signal shape Designation
1
A
Output
Connection for cable screen (PE)
2
B/L
Output
Current flowing signal I>0, galvanically isolated (max. +- 15V/100mA)
3
F
Output
Reference voltage for potentiometer 10V (max. 10mA)
4
C
Input
Control voltage specification for main current, 0
–10V (0V = I
min
/10V =
I
max
)
5
D
Input
Control voltage specification for secondary current, 0
–10V (0V =
I
min
/10V = I
max
)
6
J/U
Output
Reference potential 0V
7
K
Output
Power 15V, max. 75mA
8
V
Output
Power supply -15V, max. 25mA
9
R
Input
Start/Stop welding current
10
H
Input
Switching between main and secondary welding currents (pulses)
11
M/N
Input
Activation of control voltage specification
Signals M and N must be set to reference potential 0V to activate the
external control voltage specification for main and secondary current.
5.7
Access control
The machine control can be locked to secure it against unauthorised or unintentional adjustment. The
access block has the following effect:
• The parameters and their settings in the machine configuration menu, Expert menu and operation
sequence can only be viewed but not changed.
• Welding procedure and welding current polarity cannot be changed.
The parameters for the access block are configured in the machine configuration menu
> see 5.9 chapter
.
Enabling the access block
• Assign the access code for the access block: Select parameter
and select a number code (0
–
999).
• Enable access block: Set parameter to function
.
Disabling the access block
• Enter the access code for the access block: Select parameter
and enter the number code (0
–
999).
• Disable access block: Set parameter to
.
The only way to disable the access block is to enter the selected number code.
Changing the access block
• Enter the access code for the access block: Select parameter
and enter the previously selected
number code (0
–999).
• Change the access block: Set parameter
and assign a new code (0
–999).
5.8
Power-saving mode (Standby)
You can activate the power-saving mode by either pressing the push-button
> see 4.3 chapter
for a
prolonged time or by setting a parameter in the machine configuration menu (time-controlled power-
saving mode
)
> see 5.9 chapter
.
When power-saving mode is activated, the machine displays show the horizontal digit in the
centre of the display only.
Pressing any operating element (e.g. turning a rotary knob) deactivates power-saving mode and the
machine is ready for welding again.