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Establishing QMaster values
Purpose of QMas-
ter values
Q-Master values can be established in the "Documentation" menu item. When storing jobs
these QMaster values are accepted as pre-sets. If during job welding set QMaster value
limits are exceeded over a specific period, one of the following reactions results:
- Power source switches off immediately
- A warning signal is given
- No reaction
Establishing
QMaster values
Establishing QMaster values
Call up the "Documentation" menu
item
Select "QMaster" screen by pressing
the right arrow key (8)
– "QMaster" screen appears
Select the corresponding parameters
using down (6) or up (7) keys
Use the adjusting dial (18) to alter the
parameter value
– A parameter value can only be al-
tered within the defined setting
range. The setting range is high-
lighted
Explanation of
QMaster values
Example:
Storing a job with a welding current of 250 A and a welding voltage of 35 V - the actual
QMaster values are accepted as a pre-set.
The following limit values result for the job:
If the actual welding current during job welding is greater than 275 A or less than 236 A for
more than 0.8 sec, the power source switches off.
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2
3
4
IMPORTANT! If the "Max. duration of current-deviation" and "Max. duration of voltage-de-
viation" are entered as "Off" in the "QMaster" screen, the Q-Master function is deactivated.
Welding current according to job E.g.: 250.0 A
+ value in A for upper current limit + 25.0 A
= upper welding current limit value = 275.0 A
Welding current according to job E.g.: 250.0 A
- value in A for lower current limit - 14.0 A
= lower welding current limit value = 236.0 A
Maximum duration of current deviation E.g.: 0.8 s
Reaction E.g.: Shutdown
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