INVERTER ROCKER ARM SPOT WELDER
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JANDA’s DC Inverter with constant power and current control ensures high quality welds on aluminum alloys and stainless steels

FEATURES
  • Three phase high frequency inverter power supply operates at 1000 hz with primary and secondary constant current
  • Fully rectified DC secondary – virtually no secondary inductive loss
  • Controls incorporate Constant Current feedback to ensure exceptional reliability and the highest quality welding
  • Built-in weld checker simultaneously monitors current, voltage, power, welding time and detects problems
  • Remote programming unit displays 15 functions including trouble data and error codes
  • Heavy-duty reinforced frame’s withstand heavy pressures required for certifications
  • Compact design allows for full three phase power in a single phase frame size
  • Retraction

OPTIONAL

  • Tip Dress & Forge

 

JANDA MODEL MFDC-R3-130-36RF

  • 130 KVA 3 Phase Inverter 48,000 amp Secondary 1000 Hertz with 36” Throat. Machine has Retraction, Tip Dress, Forge, Precision Air Regulators and lower Arm Brace.
  • Both weld transformer and Inverter weld Control are mounted inside machine!
  • Program box is mounted on right-side of hood.
  • Machine will certify to Class A mil. Spec. .125 to .125 aluminum

STANDARD SPECIFICATIONS

Model

Throat Depth

KVA

Secondary Amps

Capacity Mild Steel

Capacity Aluminum

R2MF-40-18

18

40

15,000

.078 to .078

 

R2MF-40-24

24

40

15,000

.078 to .078

 

R2MF-40-30

30

40

15,000

.078 to .078

 

R2MF-85-18

18

85

28,000

.125 to .125

.065 to .065

R2MF-85-24

24

85

28,000

.125 to .125

.065 to .065

R2MF-85-30

30

85

28,000

.125 to .125

.065 to .065

R2MF-85-36

36

85

28,000

.125 to .125

.065 to .065

R3MF-170-24

24

170

50,000

3/16 to 3/16

.125 to .125

R3MF-170-30

30

170

50,000

3/16 to 3/16

.125 to .125

R3MF-170-36

36

170

50,000

3/16 to 3/16

.125 to .125

R3MF-170-42

42

170

50,000

3/16 to 3/16

.125 to .125

Bosch 800 amp 1000 Hertz Inverter Power Supply mounted under the weld transformer

130 KVA 3 Phase Inverter Transformer

Power supply connects to Inverter Transformer and secondary is rectified to D.C. This control system compensates on each pulse after the first pulse is detected, which means that compensation is 16.6 times more than that of conventional A.C. (60 HZ). Most generally, welding controls are set by using the peak values set by the AWS. RMS current is a more accurate method of setting up welding current. By using RMS values, the actual current flowing through a weld can be determined, which is much more reliable than measuring only the point at which current is at it’s peak.

Model R2MF-85-30R Inverter Rocker Arm with WTC Inverter control, 85 KVA Inverter transformer and Tip Dress
 

Model R3MF-170-42RF

170 KVA, Three Phase, 50,000 amp Secondary with 42"Tthroat, Tip Dress, Forge and Precision Air System.

Transformer and WTC 1000 amp Inverter Control are mounted inside machine. Program Box is mounted on right side of hood.

 

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Quality Assurance with Secondary Constant Current Voltage

Variations in resistance during welding are detected and fed back to the control unit. The advantage of this type of control is that reliable welds can be achieved regardless of fluctuations in power source voltage or weld defects that occur due to plating, oxides, oil or other contaminants, but with the high frequency inverter, weld current remains the same due to the ability to detect and correct current fluctuations at very high speeds. If unable to reach weld current, machine will “shut down”.

Model R4MF-85-24RTDF Size 4 Rocker Arm with retraction, tip dress, forge and WTC Inverter control mounted INSIDE frame