Micro Processor Based Resistance Welding Controller

Microprocessor Based Seam Welding Controller

Features of Micro Processor Based Seam Welding Controller :

Compact, user friendly microcontroller based circuitry.
Suitable for any capacity thyristorised A. C. seam welding machine.
Non volatile memory to store upto 15 weld schedules.
Easy to program with the help of up/down and enter Keys. Values entered are indicated by two digit LED display.
Individual operations within a weld schedule indicated by LEDs.
Key lock switch is provided for program / run mode locking.
Timing set in terms of ‘Half Cycles’ of mains supply frequency for better resolution.
Precise time and energy control ensures consistent weld quality.
Built-in compensation against fluctuation in mains supply voltage.
Weld / no weld Switch on front panel.
Separately relay contact outputs are provided to actuate pneumatic solenoid valve and motor contactor.
Double initiation foot switch operation.
Adjustment of various parameters possible as per table on reverse.

Specification :

Input supply : 415 A. C., 50 / 60 Hz.
Out put : Gate cathode drive to thyristor upto 2500 Amp.
Capacity.Interlock : Relay contacts to actuate pneumatic valve and motor contactor.
Trigger : Double initiation foot switch Actuates on contacts closure.
Dimension : 100 mm (W) X 192 mm (H) X 300 mm (D) (Standard DIN enclosure)
Weight : Approx. 2.8 Kgs.

Features of Resistance Welding Controller :

Compact user friendly microcontroller based circuitry with built-in power thyristor for upto 415 V / 90 a AC machine.
Three consecutive programmable weld timings (preheat, weld & anneal) with intermediate cool timings in one weld scheduled to achieve high quality splash free welding.
Non-volatile memory to store upto 15 weld schedules.
Easy to program with the help of UP / DOWN and ENTER keys. Value entered are indicate by two digit LED display.
Individual operations within a weld schedules indicated by LED’s.
Selector is provided for program, schedule select and RUN mode.
Timing set in terms of ‘half cycles’ of mains supply frequency to get better resolution.
Precise time and energy control ensures consistent weld quality.
Built in compensation against fluctuations in the mains supply voltage.
Single weld and repeat cycle mode selectable by toggle switch.
Weld / no weld switch on front panel
Relay contact output provided to actuate the pneumatics of the welding equipment.
Adjustment of various parameter possible as per table on the reverse.

Features of Constant Current Secondary Feedback Controller :

By using welding data logger software, welding data can be collected from each controller at real time & the collected data can be stored in excel file on computer
One PC can be linked to maximum 32 units.
Weld current data and scheduled data can be requested to each controller and can be seen & print.
Weld schedule can be changed from PC.
Event monitoring for welding defects, time & weld current data can be checked easily at real time
Opto-isolated RS485 converter (option) is installed in the controllers.
PC can be connected to the controller by 2 electric wires and the maximum length could be 1.2 km.
100 % certainty of welded spot..
Non-confirmation spots are alarmed instantly.
Supplies stable welding current by secondary constant current metho.
Networking of upto 32 machines.
Provided with data acquisition software
Printouts of welding schedules, real-time & of errors
No need of back-up battery as it stores all data to EEPROM.
15 multiple schedules can be called while welding.
Different thickness parts can be welded in the same welding sequence by calling multiple schedules.
In projection welding nuts bears 2 times breaking torque comparing with capacitor discharge method.
Avoids retapping & additional co2 tag: proves as a cost saver.
In seam welding secondary current stability upto 0.1 KA is & served after installation on existing machines.