Rtf Start Ramp - EWM Tetrix 451 AC/DC AW FW Operating Instructions Manual

Design and function
Remote control

5.12.8.1 RTF start ramp

The RTF start ramp function prevents the energy input at the start of welding from being too high and too
fast should the user press the remote control pedal too fast and too strongly.
Example:
The user sets the main current at the welding machine to 200 A. The user presses the remote control
pedal very quickly down by approx. 50% of the pedal travel.
•
RTF switched on: The welding current increases in a linear (slow )ramp to approx. 100 A.
•
RTF switched off: The welding current immediately jumps to approx. 100 A.
The RTF start ramp function is activated/deactivated by the parameter
menu > see 5.17 chapter.
Symbol
Display
90
Meaning
Actuate foot-operated remote control (start welding process)
Operate foot-operated remote control (set welding current according to
application)
Release foot-operated remote control (end welding process)
Setting/selection
RTF start ramp > see 5.12.8.1 chapter
------- Welding current rises to the specified main current level in a ramp function (ex
works)
------- Welding current immediately jumps to the specified main current level
Gas pre-flow time
Ignition current (as percentage, dependent on main current)
End-crater current
Setting range in percent: depending on main current
Setting range, absolute: Imin to Imax.
Gas post-flow time
Figure 5-82
in the machine configuration
099-000115-EW501
20.11.2017