SEC611-R4 EEV Controller For Refrigeration HVAC

Name: SEC611-R4 EEV Controller For Refrigeration HVAC
SKU: SEC611-R4
Availability: InStock

Original price was: $320.00.Current price is: $300.00.

SEC611-R4 EEV controller provides precise superheat control for HVAC & refrigeration systems, matching electronic expansion valves to stabilize refrigeration cycle performance.

Availability: In stock

SKU: SEC611-R4 Categories: Expansion Valves, Other Refrideration Accessories, Refrigeration Spare Parts Tags: EEV controller, Electronic Expansion Valve Controller, HVAC refrigeration controller, Refrigeration Spare Parts, SEC611-R4, superheat controller

Overview

SEC611-R4 is an electronic expansion valve controller designed to realize accurate superheat regulation for HVAC and refrigeration equipment. The unit collects signals from temperature and pressure sensors to automatically adjust the opening of electronic expansion valves, optimizing system operation efficiency, reducing energy consumption and enhancing operating stability for various refrigeration and heat pump systems.

Key Features

Real-time superheat calculation and continuous valve adjustment
Supports NTC temperature sensor and pressure transmitter signal input
Built-in digital display and physical operation buttons for parameter setting
Equipped with RS485 communication interface for system networking
Multiple protection functions to secure refrigeration system operation
Compact wall-mounted structure, convenient for on-site installation

SEC611-R4 technical specifications table

Item	Specification
Model	SEC611-R4
Product Type	Electronic Expansion Valve Controller for HVAC & refrigeration
Pressure Input Signal	0.5~3.5V ratiometric (match YCQB series voltage pressure sensor)
Power Supply	24V AC +10%/-15% 50/60Hz; 24V DC ±10%
Required Transformer	≥15VA
EEV Output	12V DC ±10%, rectangular wave unipolar drive signal
Input Ports	1 × Voltage pressure sensor input, 1 × NTC temperature sensor input, 1 × RUN passive switch input
Communication	RS485 Modbus
Auxiliary Relay Output	30V DC / 5A
Superheat Control Accuracy	±0.8% F.S.
Supported Refrigerants	R22, R134a, R404A, R407C, R410A, R507, R32, HFO series refrigerants
Operating Ambient Temp	-30°C ~ +55°C
Storage Temperature	-30°C ~ +55°C
Relative Humidity	≤95% RH, non-condensing
Installation	DIN rail snap-in or wall mounting with screws
Compatible Valves	DPF, LPF series electronic expansion valves
Compatible Sensors	YCQB series pressure sensor, NTC series temperature sensor
Protection Class	IP20
Certifications	CE, EMC, UL
Application	Heat pump, air conditioning, commercial refrigeration, cold storage HVAC&R systems

Same Series Display Models

SEC611-R4

SEC611-R0

SEC711

Matching Series Controllers

STGB15

STGB20

STGB25

STGB32

STGB40

STGB50

Supporting System Accessories

NTC2A1

NTC9A1

YCQ802L12

YCQB2L12

YCQC2L18

Application Scope

Model SEC611-R4 electronic expansion valve controller is widely applied in air source heat pumps, water chillers, cabinet refrigerators, cold storage units and other commercial HVAC and refrigeration equipment.

Packaging & Shipping

Neutral safe packaging, shockproof and drop-proof protection
Global shipping via DHL, UPS, FedEx and sea freight options
In stock support for fast delivery
Wholesale, retail and mixed order are acceptable

Our Service

We provide full series of refrigeration and HVAC spare parts, including control display panels, temperature controllers, sensors, power modules and industrial electrical accessories.

For technical parameters, dimension drawing, cross reference model or bulk discount, please feel free to contact us. Cick Contact us.To consult HVAC standard pls click HVAC standard.

Should you need alternative models, kindly reach out to our team. Our company offers a comprehensive lineup of refrigeration accessories to meet diverse application demands.