Danfoss EKE 1B Superheat Controller / EEV Driver (080G5350) | 24V | Modbus RS485

Danfoss EKE 1B (Danfoss code: 080G5350) is a DIN rail electronic controller that drives stepper motor electronic expansion valves (ETS, CCMT, CTR, KVS) and performs superheat control. It measures the superheat at the evaporator outlet with temperature and pressure sensors and continuously adjusts the opening of the expansion valve; this increases efficiency and prevents liquid floodback. Compared with the EKE 1A, it is more advanced with Modbus RS485 communication and a second temperature sensor input.

Electronic Expansion Valve Driver and Superheat Controller

It is a 24V AC/DC powered, DIN rail mounted module with IP40 protection. It has no display; setup and monitoring are done via the optional MMIGRS2 external display or via Modbus.

Key Features

• Superheat control + electronic expansion valve (EEV) driver
• Modbus RS485 fieldbus communication (not available on EKE 1A)
• 2 temperature sensor inputs (superheat + ambient/media temperature)
• 24V AC/DC supply · DIN rail · IP40
• Drives Danfoss ETS, CCMT, CTR, KVS stepper motor valves

Technical Specifications

• Brand / Model: Danfoss / EKE 1B (code: 080G5350)
• Type: Superheat controller / stepper motor EEV driver
• Power Supply: 24V AC and DC
• Inputs: 2 analog (voltage), 2 digital inputs, 2 temperature sensors (NTC), 1 pressure (0.5-4V ratiometric)
• Output: 1 digital output + stepper motor valve driver
• Communication: Modbus RS485 RTU + RJ11 (CAN) user interface
• Display: None — optional external display MMIGRS2
• Valves Driven: ETS 6-400, CCM/CCMT 0-42, CTR 20, KVS 2C-42
• Protection / Mounting: IP40 · DIN rail

Technician Tips

• Module only: A complete application additionally requires a stepper motor EEV (ETS/CCMT), an NTC temperature sensor and a ratiometric pressure transmitter (AKS 2050).
• If you need a display, obtain the MMIGRS2 display separately or connect via Modbus to SCADA/building automation.
• If the EKE 1A is not sufficient (communication/2nd sensor needed), choose the 1B.
• Connect the sensor and valve leads to the correct terminals; set the superheat target according to the refrigerant.