Design and function
Voltage reducing device
099-000188-EW501
22.02.2016
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5.9.6
Expert menu (MMA)
The expert menu includes functions and parameters which are either not set on the machine control, or
which do not require regular setting.
ENTER
3s
EXIT
3s
Figure 5-23
Display
Setting/selection
Hotstart current
Hotstart current setting
Hotstart time
Hotstart time setting
Pulse balance
Percentage of time from pulse cycle Tpuls for pulse current
Setting range 1% to 99%, ex works: 30%
Pulse frequency
Setting range 0.2 Hz to 50 Hz, 1.2 Hz ex works.
Pulse current
Setting range 1% to 200%, ex works: 142%
5.10 Voltage reducing device
The voltage reducing device is a requirement in some countries and in many internal company safety
guidelines for power sources.
The voltage reduction device is only active on VRD machine versions.
To increase safety, particularly in hazardous environments (like shipbuilding, pipe construction or mining),
the machine is equipped with the VRD (Voltage-reducing device) voltage reduction device.
The VRD signal light is illuminated, when the voltage reduction device is operating without fault and the
output voltage is reduced to a value specified in the relevant standard (see technical data).
- See 4.3 Machine control
– Operating elements chapter
- See 8 Technical data chapter