ENDA ET4402-230 is a compact 48x48 mm digital PID temperature controller designed for electric heaters, machinery and industrial heating processes.

The controller supports selectable J, K and L thermocouple inputs, allowing the same device to be configured for different temperature applications.

Available measuring ranges are:

• J thermocouple: -30...600 C
• K thermocouple: -30...999 C
• L thermocouple: -30...600 C

Specified measurement accuracy is +/-0.5% of full scale +/-1 digit.

The ET4402 supports selectable:

• On-Off
• P
• PI
• PD
• PID control

An automatic Self-Tuning function assists with PID setup, while Soft-Start provides progressive startup for heating applications.

Control outputs

The controller provides:

• 12V DC / 20mA SSR output
• C/A2 relay: 250V AC, 5A resistive, NO+NC
• A1 relay: 250V AC, 5A resistive, NO

C/A2 can be configured for temperature control or Alarm2, while A1 can operate as Alarm1 or cooling control.

Main specifications

• Manufacturer: ENDA
• Model: ET4402-230
• Type: digital PID temperature controller
• Supply: 230V AC +10% / -20%, 50/60Hz
• Power consumption: 5VA
• Dimensions: 48 x 48 x 53 mm
• Panel mounting
• 14.2 mm LED display
• Selectable J, K and L thermocouples
• On-Off / P / PI / PD / PID control
• Self-Tuning
• Soft-Start
• Sensor offset adjustment
• Manual control option in case of sensor failure
• SSR output: 12V / 20mA
• C/A2 relay: 250V AC / 5A, NO+NC
• A1 relay: 250V AC / 5A, NO
• 12-bit A/D converter
• 100ms sampling time
• Control period: 1...125 seconds
• Adjustable hysteresis: 1...50 C/F
• Output power adjustment: 0...100%
• IP65 front protection
• IP20 rear protection
• Operating temperature: 0...+50 C
• Plug-in terminals
• CE marked.

Typical applications include cartridge heaters, band heaters, tubular heating elements, heated molds, injection molding machines, extruders, industrial ovens, packaging equipment and other industrial heating systems.