Functional characteristics
Advanced functions on the wire feed unit control
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Item No.: 099-004833-EWM01
5.10.1.8
Special cycle in the operating modes special latched and non-latched (P5)
In the “normal” cycle of latched/non-latched the system starts with the start program Dvstart and
subsequently enters into the main program DV2.
In the “DV3 cycle” of latched/non-latched, the system starts with the start program Dvstart and
subsequently enters into the reduced main program DV3, remains there for the time T3 and then changes
automatically into the main program DV2. As a result an additional program is available in the cycle.
5.10.1.9
Enabling special JOBs SP1 to SP3 (P6)
This function is not available with machine control M3.71.
The JOB changeover is blocked if the key switch is in the “0” position.
This block can be cancelled for the special JOBs (SP1 - SP3).
5.10.1.10
Correction operation, threshold value setting (P7)
The correction operation is switched on and off for all JOBs and their programs at the same time. A
correction operation is specified for wire speed (DV) and welding voltage correction (Ukorr) for each JOB.
The correction value is saved separately for each program. The correction range can be maximum 30%
of the wire speed and +/-9.9 V welding voltage.
Figure 5-40
Example for the operating point in correction mode:
The wire speed in one program (1 to 15) is set on 10.0 m/min.
This corresponds to a welding voltage (U) of 31.0 V. When the key switch is set to "0" position, welding in
this program can only be carried out with these values.
To allow the welder also to perform wire and voltage correction in program mode, the correction mode
must be switched on and limit values for wire and voltage must be specified.
Setting of the correction limit value
=
WFlimit = 20% / Ulimit = 1.9 V
Now the wire speed can be corrected by 20% (8.0 up to 12.0 m/min) and the welding voltage by +/-1.9 V
(3.8 V).
In the example the wire speed is set on 11.0 m/min. This corresponds to a welding voltage of 32.8 V
Now the welding voltage can be corrected by further 1.9 V (30.9 V and 34.7 V).
The values for voltage and wire-speed correction will be reset if the key switch is moved to the "1"
setting.
