Sanhua SEC Series Manual/Installation Instructions
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Sanhua SEC Series Manual/Installation Instructions

Eev controller
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SEC series EEV Controller
Manual/Installation Instructions
II-SEC61-EN-R2010

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Summary of Contents for Sanhua SEC Series

  • Page 1 SEC series EEV Controller Manual/Installation Instructions Copyright © SANHUA 2019 II-SEC61-EN-R2010 Subject to change without notice...
  • Page 2 10. The sensor wire and signal wire should be away from the power and load wires using conduits separately installed. 11. Please avoid using the product near a device generating strong high frequency noise (high frequency welding machine, high-frequency sewing machine, high-frequency radiotelegraph, high capacity SCR controller) Copyright © SANHUA 2019 II-SEC61-EN-R2010 2 / 17...

  • Page 3: Basic Specifications

    Temperature sensor RUN signal Passive switch signal Relay output 30Vdc/5A Output EEV (uni-polar) output Communication RS 485 Operation -30~55 C, Humidity≤95%RH Storage -30~55 C, Humidity≤95%RH Protection level IP20 Copyright © SANHUA 2019 II-SEC61-EN-R2010 3 / 17 Subject to change without notice...

  • Page 4: Installation Notes

    / temperature sensor at each evaporator outlet. We recommend to install the temperature and pressure sensors within 0.5m from the evaporator to prevent ambient temperature and pressure drop interference for the superheat calculation. Copyright © SANHUA 2019 II-SEC61-EN-R2010 4 / 17...

  • Page 5: Wire Connections

    YCQB: +5V (RED) YCQC: 10-30Vdc YCQB: 0.5-3.5V Pressure sensor P-SENS (White) YCQC: 4-20mA YCQB: GND (Black) YCQC: N/A terminal Temp. sensor T-SENS NTCSK/B3970 EEV output EEV MOTOR Copyright © SANHUA 2019 II-SEC61-EN-R2010 5 / 17 Subject to change without notice...
  • Page 6 4. If you use a transformer, please ensure the minimum power is 15 VA (for 1 controller + 1 EEV). 5. Min/max wire diameter: 0.2 ~1.3 mm² 6. 24Vdc or 24Vac for SEC611, 24Vdc only for SEC612. Copyright © SANHUA 2019 II-SEC61-EN-R2010 6 / 17...

  • Page 7: Dip Sw Setting

    1-2 phase, 500 steps, 30pps DIP SW2: OFF, DIP SW3: ON 2phase, 2000 steps, 100PPS DIP SW2: ON, DIP SW3: ON Custom mode, set by parameter table 3 Copyright © SANHUA 2019 II-SEC61-EN-R2010 7 / 17 Subject to change without notice...
  • Page 8 Note: 1. While using the manual /drive mode, keep the compressor RUN signal always ON. 2. n drive mode, external 4-20mA or 1-5V analog signal is input through the pressure sensor port. Copyright © SANHUA 2019 II-SEC61-EN-R2010 8 / 17...
  • Page 9 Buttons introduction Enter the parameter setting interface / return parameter list Switch screen display parameters, increase/decrease parameters Confirm key, parameter switch in parameter table, long press save parameter Copyright © SANHUA 2019 II-SEC61-EN-R2010 9 / 17 Subject to change without notice...
  • Page 10 7. After finish modifying, long press for 3s will save all settings and return to the operating interface. Copyright © SANHUA 2019 II-SEC61-EN-R2010 10 / 17 Subject to change without notice...
  • Page 11 Start open ratio b 1r 40004 Start open ratio duration time When controller receives compressor RUN signal, EEV will keep the start opening ratio for the duration time. Copyright © SANHUA 2019 II-SEC61-EN-R2010 11 / 17 Subject to change without notice...

  • Page 12: Alarm Mode

    Low temperature freezing alarm Note StP is not alarm, just reminding the compressor RUN signal is disconnected. Alarm manual reset button is on side face of SEC (EEV driver) shell. Copyright © SANHUA 2019 II-SEC61-EN-R2010 12 / 17 Subject to change without notice...

  • Page 13: Parameters Table

    1) Alarm setting When alarm setting is ON, if system pressure/temperature exceeds/below the set alarm value and keep more than the delay time, the controller will generate an alarm and act accordingly Copyright © SANHUA 2019 II-SEC61-EN-R2010 13 / 17...
  • Page 14 40078 CommunicationID setup 40079 Communication speed setup 48(0)=4800 96(1)=9600 192(2)=19200 384(3)=38400 Reset 1) set rSt to password value (default 5), and then long press the controller will factory reset. Copyright © SANHUA 2019 II-SEC61-EN-R2010 14 / 17 Subject to change without notice...
  • Page 15 250(7)=250PPS 500(8)=500PPS 1) Parameter Table 3 is usually not use, SANHUA standard EEV can directly set by the DIP SW. If you want modify parameters table 3, please change DIP SW first. (See page 5) 2) Because the controller screen display maximum value is 999, so 40043 EEV total steps pulse 50 means 500 steps.

  • Page 16: Communication Protocol

    INT 16 ×10 40113 Present pressure Analog INT 16 -1.0~1.0 ×10 40114 Present temperature Analog INT 16 -100.0~100.0 ×10 40116 EEV open ratio Analog INT 16 0.0~100.0 ×10 Copyright © SANHUA 2019 II-SEC61-EN-R2010 16 / 17 Subject to change without notice...
  • Page 17 Copyright © SANHUA 2019 II-SEC61-EN-R2010 Subject to change without notice...

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