RESISTANCE WELDING CONTROLLER

The Resistance Welding Controller is a high-precision control unit designed to manage and optimize the welding parameters of resistance welding machines such as spot, projection, or seam welders. It enables operators to monitor, program, and adjust critical welding parameters in real-time, ensuring consistent weld quality, repeatability, and energy efficiency.

Modern controllers use digital microprocessor or PLC technology, providing millisecond-level control over welding current, electrode force, and weld duration. These controllers are essential for applications where high-volume production, tight tolerances, and material-specific welding profiles are required.

By integrating a Resistance Welding Controller, manufacturers can reduce scrap, prevent equipment overloading, and improve overall welding performance, making it indispensable in automotive, electrical, appliance, and general fabrication industries.

Key Features

Suitable for single phase AC spot/projection welder and seam welder.
CPU carries out the Feedback control during welding. It ensures the stable welding current even the fluctuation of power supply there. Guaranteed the welding quality.
Count the welding spots. Detect the actual voltage of the power supply. Detect the actual welding current (CC mode).
Two type of current feedback: Welding transformer primary side and secondary side.
Automatic self-diagnosis, display Error number for any abnormal condition.
Power limit interface for convenient limiting the power capacity.

SPECIFICATION

Model Items	KCT01
Control factor / times	4/15 parameters / 3 times pulse control
Pressure valve drive	2 pressure valves, DC 24V
Feedback mode	Welding transformer primary side / secondary side
Rated input voltage (V)	415V / 1 phase, ±10%
Frequency (Hz)	50/60
Control parameter range – Pressure	Pressure valve 1
Parameter	1 – 15
Initial pressure delay (cycle)	0 – 199
Initial pressure time (cycle)	1 – 199
Current upslope time (cycle)	1 – 199
Pre-heat time (cycle)	0 – 199
Pre-heat current (×100A)	20 – 199
First cooling time (cycle)	0 – 199
Welding time (cycle)	0 – 199
Welding current (×100A)	20 – 199
Second cooling time (cycle)	0 – 199
Temper time (cycle)	0 – 199
Temper current (×100A)	20 – 199
Current downslope time (cycle)	0 – 199
Hold time (cycle)	1 – 199
Off time (cycle)	0 – 99
Transformer turn ratio (M)	1 – 99
Number of welding circuits	1 – 4
Over current limit	5 – 99%
Under current limit	5 – 99%
Adding weld control under current limit	1 / 1 time adding weld allowed, 0 / No adding weld
Suitable welding power source	Thyristor
Start mode	Pulse, Normal
Welding mode	Spot / Projection, Seam
Keep ending signal	Built-in
Power signal	Built-in
Power control signal	Built-in
Monitor function	Weld spot count, welding current, current ratio, etc.
Count function	Count welding spots
Switch running mode	Welding/Adjustment, Discontinuous/Continuous