IT 90 AT

Application

Features

Microcontroller – for precise process times, optimal functional reliability and maximum operating convenience
Function monitoring – automatic function test following power-up; monitoring of all internal system functions
Lift test – for gap welding guns and stud welding heads
Library function – automatic specification of welding current and welding time through selection of stud diameter according to welding range (with and without shielded gas); fine adjustment via arrow keys
Process monitoring – recording and analysis of factors affecting the welding process; after each weld, the reference and actual values are compared; display of the welding energy input; switchable automatic welding stop if limits are exceeded
RS232 interface – for data output; data and time of day are stored; welding parameters of each weld are logged)
4 gun connections (optional)

Structure

Extremely easy to operate
Compact
Mobile – highly mobile thanks to compact dimensions and low weight (50 % weight savings vis-à-vis conventional stud welding units)
Robust – metal housing withstands rough treatment in shop and on site

Safety

With integrated mains filter (protection against voltage peaks)
Optimal for construction sites with large mains voltage fluctuations – use even with critical voltage supply (- 10 % + 10 %)
EMC test
High-voltage test with log
Retriggering lock-out – prevents welding on a welding element that has already been set
Thermal monitoring of transformer – automatic shutdown in case of overheating
Temperature-regulated ventilator – reduces noise and dust in the stud welding unit (greater system reliability)
Control unit galvanically separated from welding lines – high degree of functional safety
Optimal protection against external interferences
IP Code: IP 21

Welding

Display – infinitely adjustable power setting; easy monitoring of all functions via LED displays; easy operation via membrane keyboard and digital display; setting of welding parameters, programs, shielding gas, automation and process monitoring possible; digital display of current, welding and gas-preflow time (optional: pneumatic feed time for automation); separate settings for welding current and welding time
Powerful – built-in power reserves
Trouble-free changing of welding voltage polarity possible by reconnecting welding current and ground cables
Outstanding welding quality – very high arc stability even at weak welding currents
High process flexibility – high clock frequency (30 kHz) of stud welding unit allows highly dynamic regulation of welding process

Welding range	M3 to M24, dia. 2 to 22 mm / #4 to 1“, dia. 14 ga to 7/8“
Welding rate	Dia. 22 / 7/8“ = 6 studs/min
Welding current	2 000 A (max.)
Current adjustment range	300 to 2 000 A (stepless)
Welding time	5 to 1 500 ms (stepless)
Primary power	400 V, 3 phases, 50/60 Hz, 63 AT (slow blow) alternative primary power see „Order No.“
Primary plug	63 A (with 400 V mains)
Connected load	100 kVA (with 400 V mains)
Cooling type	F (temperature controlled cooling fan)
IP Code	IP 21
Dimension LxWxH (without handle)	650 x 560 x 1290 mm / 25.6“ x 22“ x 50.8“
Weight	145 kg / 319.67 lbs (1 gun conn.) 165 kg / 363.76 lbs (4 gun conn.)
Suitable guns	PAH-1, KAH 412, KAH 412 LA
Order No.	93-60-12096 (400 V – 1 gun connection) 93-60-42096 (400 V – 4 gun connection) 93-66-12096 (480/460 V – 1 gun connection) 93-66-42096 (480/460 V – 4 gun connection)

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