118
Parameters of CMT characteristics
General
Ignition
In CMT processes, the ignition process is generally initiated with SFI (Spatter-Free Igni-
tion). Regardless of the CMT characteristic, subsequent ignition behaviour in the CMT pro-
cess is controlled by the following parameters:
NOTE!
The creation and editing of CMT characteristics is a complex task and
therefore a core skill of Research & Development. Special measurement technol-
ogy (e.g. a high-speed camera, oscilloscope) as well as extensive background
knowledge is required for the creation and editing of CMT characteristics.
The modification of CMT characteristics on-site simply optimizes the application
in question.
-
vd_ignition
or
-
slaghammer On_1/Off_0
-
I_ignition
-
I_ignition
-
t_ignition
-
t_ignition
-
U_hotstart
-
t_hotstart
vd_ignition
Wire feed speed command value [m/min] before welding begins (-30 - +30)
-30
=
backward movement of the wire electrode at 30 m/min
+30
=
forward movement of the wire electrode at 30 m/min
I_ignition
Command value for the ignition current [A], set when welding begins. The ignition current
depends on the filler metal and wire diameter.
t_ignition
Length of time [ms] that the parameters Vd_ignition and I_ignition are active when weld-
ing begins.
0
=
no ignition current, no wire feed speed
99.98
=
max. duration for ignition current and wirefeed speed command value
U_hotstart
Parameter [V] for changing the arc length when welding starts
10
=
short arc
40
=
long arc
t_hotstart
The length of time [ms] that the change in the arc length is active when welding begins.
0
=
no change in the arc length
654.98 =
max. duration for the change in arc length
Summary of Contents for RCU 5000i
Page 2: ...2 ...
Page 4: ...4 ...
Page 200: ...200 Backup screen All data from the remote control unit are sa ved onto the memory card ...
Page 202: ...202 Restore screen The last Data screen called up appears ...
Page 207: ...207 EN Machine pre sets MIG MAG screen MIG MAG screen appears ...
Page 210: ...210 Machine pre sets e g MIG MAG screen The last Data screen called up appears ...
Page 242: ...242 ...
Page 243: ...Appendix ...
Page 244: ...244 Spare parts list RCU 5000i ...
Page 245: ...245 ...
Page 246: ...246 ...
Page 247: ...247 ...