Miller PipeWorx 400, Руководство пользователя

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OM-236 891 Page 61
6-8. Preflow And Postflow Adjustment
.
Postflow will not function without an arc initiation.
Preflow and Postflow times can be configured for each of the TIG, Wire Feeder Left and Wire Feeder Right outputs. These times are global settings (i.e.
all memory slots share the same three preflow and postflow settings; it is not possible to set different postflow times between memory slots).
The unit is shipped in the standard configuration (“Std” appears on the display). In the standard configuration preflow and postflow times are automatic-
ally calculated as follows:
Preflow
Preflow is only active when in the HF start mode. For TIG, the preflow time is set to 0.1 seconds when in the standard configuration.
For wire processes, the preflow times are fixed at 0.25 seconds which is the default setting in the weld programs.
Postflow
For TIG, the postflow time is a function of output current where the minimum time is 8 seconds from 0 to 175 amps and increases linearly from 8 seconds
at 175 amps to 16 seconds at 350 amps.
For wire processes, the postflow time is a function of wire feed speed where the minimum time is 8 seconds from 0 to 390 ipm and increases linearly for 8
seconds at 390 ipm to 16 seconds at 780 ipm.
Pre
Std
PSt
Std
252 614-A