SEC711 - Controller for bipolar electronic expansion valves

The SEC711 series is an electronic controller designed for the advanced management of bipolar electronic expansion valves , used in HVAC/R and refrigeration systems.

Thanks to the advanced PID algorithm, the device allows for precise automatic superheat regulation, optimizing evaporator usage and improving overall system efficiency. Continuous control ensures operational stability under all load conditions, reducing energy consumption and improving performance.

The controller supports multiple operating modes, adapting to multiple applications and system configurations, including superheat, pressure and temperature regulation.

• Type: Controller for bipolar electronic expansion valves
• Diet:
• 24 Vac (20–28 Vac, 50/60 Hz)
• 24 Vdc (20–28 Vdc)
• Operating temperature: -30°C ÷ +60°C
• Storage temperature: -40°C ÷ +70°C
• Relative humidity: ≤95% RH
• Installation: DIN rail mounting
• Communication: RS485 with Modbus RTU protocol
• Certification class: CE (EMC)

Inputs and outputs

Entrances:

• 1 pressure sensor input (current or voltage)
• 1 temperature sensor input
• 1 RS485 communication input
• 1 Run/Stop input
• 1 digital input (DI)
• 1 backup power input

Outputs:

• 1 output for 4-wire electronic expansion valve (bipolar)
• 1 relay output

Compatible sensors

• Temperature sensors: NTC, PT1000
• Pressure sensors: Voltage type (YCQB), Current type (YCQC)

Accessories available

• Power supply (model TM02)
• Supercapacitor module for backup (SP02)
• Dedicated temperature and pressure sensors

• Commercial air conditioning systems
• Industrial refrigeration
• Heat pumps
• Advanced HVAC systems
• Evaporator control in direct expansion systems