Sanhua SEC61X SERIES - User Manual

PRODUCT DATA
Copyright © SANHUA 2020 1 DS-SEC61X-NA-EN-0620
Subject to change without notice
The Sanhua SEC61x Series controller is a
standalone controller for refrigeration and air
conditioning systems. The controller can be
used to operate an electronic expansion valve to
control superheat or discharge air temperature.
It can also be used as an electronic valve driver
(positioner) by accepting an external signal
from a main system controller.
FEATURES
• ADVANCED PID ALGORITHM TO ENSURE ACCURATE AUTOMATIC ADJUSTMENT OF SUPERHEAT
• ALARM FEATURE FOR LOW AND HIGH SUPERHEAT
• EASY TO INSTALL; DIN RAIL OR SURFACE MOUNT
• MAXIMIZES SYSTEM EFFICIENCY WITH PRECISE SUPERHEAT CONTROL
• ALTERNATE USE AS AN ELECTRIC VALVE DRIVER
• OPERATES SANHUA LPF OR DPF(S03) SERIES EEVS
SEC61X SERIES | Electronic Expansion Valve Controller
NOMENCLATURE
SEC 6 13 R4
“R4” = Controller includes RS485 Modbus communication
Pressure Transducer Type: “13” = Voltage Type, “14” = Current Type
“6” = Sixth Generation
Sanhua Electric Expansion Valve Controller

Summary

Product Features

Nomenclature Explanation

SEC Controller Specifications

Connected Components List

Temperature Sensor Specifications

Pressure Transducer Specifications

Product Dimensions and Diagrams

System Placement Overview

Electrical Connection Diagram

Controller Operation

LED Display and Button Functions

Explains the function of the LED display and physical buttons on the controller.

Menu Navigation and Parameter Setting

Details the process of navigating through menus and setting parameters using buttons.

DIP Switch Configuration

EEV Type Selection via DIP Switches

Describes how DIP switches configure the EEV type and steps.

Control Method Selection via DIP Switches

Explains DIP switch settings for different control methods like Superheat or Manual.

Primary Control Modes

Superheat Control Mode

Details the Superheat control mode and its application parameters.

EEV Driver (Positioner) Mode

Describes the EEV Driver mode for external signal control and its wiring.

Advanced Control Modes

Discharge Air Temperature Control

Explains controlling discharge air temperature and associated parameters.

Manual Control Mode Operation

Details how to manually control the valve opening ratio using DIP switches and buttons.

Parameter Settings: Menu 1

Superheat and Alarm Parameters

Lists parameters for Superheat set-point, start-up, alarms, and freeze prevention.

Parameter Settings: Menu 2

Refrigerant and Communication Settings

Covers refrigerant selection, sensor calibration, and communication setup.

Parameter Settings: Menu 3

Valve Excitation and Speed Settings

Details parameters for valve excitation type, pulses, and drive speed.

Alarm Modes

Important Cautions

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

The Sanhua SEC61x Series is an electronic expansion valve controller designed for refrigeration and air conditioning systems. It functions as a standalone controller capable of operating an electronic expansion valve to manage superheat or discharge air temperature. Additionally, it can serve as an electronic valve driver (positioner) by receiving an external signal from a main system controller.

Function Description:

The controller utilizes an advanced PID algorithm to ensure accurate automatic adjustment of superheat, maximizing system efficiency through precise control. It includes an alarm feature for both low and high superheat conditions, enhancing system safety and reliability. The device is designed for easy installation, supporting both DIN rail and surface mounting options. It is compatible with Sanhua LPF or DPF(S03) series electronic expansion valves (EEVs). The controller can also be configured for alternate use as an electric valve driver, accepting external signals for valve positioning.

Important Technical Specifications:

• Dimensions: 2.83" (72mm) × 4.49" (114mm) x 1.14" (29mm).
• Supply Voltage: 24VAC/DC +10%/-15%, 50/60Hz, minimum 15 VA.
• Connections: Features removable screw terminals (28 to 16 AWG) and XHP plug-in terminals.
• Inputs: Supports pressure transducers, temperature sensors, and a RUN signal.
• Outputs: Provides a relay output (250VAC/30VDC/5A) and an EEV (unipolar) output.
• Operation Temperature: -13°F (-25°C) to 140°F (60°C), with humidity ≤ 95%RH.
• Storage Temperature: -22°F (-30°C) to 140°F (60°C), with humidity ≤ 95%RH.
• Pressure Transducer Compatibility:
  • YCQB (Voltage Type): Supply Voltage 5 ± 0.25 VDC, Output 0.5 to 3.5 VDC, Measure Range 0 to 290 PSI, Test Pressure 761 PSI, Accuracy ±0.8% F.S. (140 to 104°F), Protection Class IP 67. Connector types include 1/4" ODM Solder or 1/4" SAE Flare, with JST-XHP Connector and attached cable.
  • YCQC (Current Type): Supply Voltage 10 to 30 VDC, Output 4 to 20mA, Measure Range -14.5 to 174 PSI, Test Pressure 761 PSI, Accuracy ±0.8% F.S. (140 to 104°F), Protection Class IP 67. Connector type is 1/4" SAE Flare, with Packard Connector and separate cable.
• Temperature Sensor (NTC 5K): Sensor type NTC 5KΩ, Cable 2 x 20 AWG, Protection class IP 67, Accuracy ±0.5°F @ 77°F, Measuring range -58°F to +122°F. Resistance values vary with temperature (e.g., 347 kOhms at -58°F/-50°C, 1.8 kOhms at 122°F/50°C).
• Communication: "R4" in the model number indicates the controller includes RS485 Modbus communication. Communication speed setup (bdr) supports 4800, 9600, 19200, and 38400 bits/s.

Usage Features:

• Nomenclature: Model numbers like SEC613-R4 or SEC614-R4 indicate the pressure transducer type ("13" for Voltage, "14" for Current) and the inclusion of RS485 Modbus communication ("R4"). "6" signifies the sixth generation of the Sanhua Electric Expansion Valve Controller.
• LED Display: The LED display shows Superheat, Pressure, Open%, Temperature, and F/PSIG units. It also indicates alarming (lighting), manual mode (flickering), power-up (lighting), communication (flickering), and parameter change mode.
• Operating Buttons: Includes PRG (program), UP, DOWN, and SEL (select/save) buttons for navigation and parameter adjustment.
• Menu Navigation: Access parameters by pressing PRG for 3s, entering a password (default is 5), and using UP/DOWN buttons to navigate menus. SEL button is used to enter menus, cycle through parameters, and save changes.
• EEV Type Selection (DIP SW):
  • Default Mode (SW2 OFF, SW3 OFF): 1-2 phase, 500 steps, 30PPS.
  • 2 Phase, 2000 steps, 100PPS (SW2 OFF, SW3 ON).
  • Custom Mode (SW2 ON, SW3 ON): Set by parameters in table 3.
• Control Method Selection (DIP SW):
  • Default Mode (SW1 OFF, SW4 OFF): Superheat control, automatic mode, uses temp./pressure signals, and can operate via RS485 comm.
  • Manual Operation (SW1 ON, SW4 OFF): Allows direct control of valve opening ratio using UP/DOWN buttons, also operable via RS485 comm.
  • Drive Mode (SW1 ON, SW4 ON): Uses 4-20mA or 1-5V analog signal control.
  • Hot Gas Bypass (Temperature Control) (SW1 OFF, SW4 ON): Precise temperature control by managing discharge air temperature.
• Control Modes:
  • Superheat Control: Parameters include Superheat set-point (SH), Start open ratio (BIR), Start open ratio duration time (SDT), Proportional gain (DFR), Integral time (IRT), and Derivative time (DRT).
  • EEV Driver (Positioner): Operates in drive mode using external 4-20mA or 1-5V reference signals.
  • Discharge Air Temperature Control: Similar parameters to superheat control, but SH becomes the set point for the control target.
  • Manual Control Mode: Users can arbitrarily set the valve open ratio.
• Alarm Mode: Includes alarms for RUN signal disconnected (SEP), MOP high pressure (nop), LOP low pressure (LoP), pressure transmitter disconnected (PoP), pressure transmitter short circuit (PSE), high superheat (HSH), low superheat (LSH), and temperature sensor disconnected (toP).

Maintenance Features:

• Password Reset: The device can be reset to factory settings by entering a password (default is 5) in Menu 2 (parameter 40080).
• Self-Hold Technology: Sanhua's self-hold technology allows the stator to be de-energized while maintaining a constant valve position, potentially reducing power consumption.
• Safety Precautions:
  • Do not open the device with power on to avoid electric shock.
  • Install in a fixed, secured place (rack or panel).
  • Ensure power input is within designated ranges.
  • Use a circuit breaker or switch (IEC 60947-1 or IEC 60947-3) for power on/off.
  • Output wires should be inflammable grade FV1 (v-1 grade or above), with a thickness of AWG No. 20 (0.50mm) or more.
  • Separate high-voltage and power wires to prevent inductive noise.
  • Avoid strong magnetism, noise, severe vibration, and impact.
  • When extending sensor wires, use shielded wire and avoid excessive length.
  • Keep sensor and signal wires separate from power and load wires.
  • Avoid installing near devices generating strong high-frequency noise (e.g., welding machines, sewing machines, radio, SCR controllers).

Sanhua SEC61X SERIES Specifications

General

Brand	Sanhua
Model	SEC61X SERIES
Category	Controller
Language	English