1. Installation and Wiring Screw installation Use 3pcs M4x6 screws through 3 mounting holes to install controller. SEC6X1-HD has fully hermetic design and can be directly installed on the sheet metal of the air cooler (both inside and outside) or other nearby locations in the cold room.
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Cable Length(mm) Print Description Function Remarks SEC611-HD/ SEC621-HD/ SEC631-HD SEC641-HD ( ) ① 220Vac ~ Power Supply ( ) (85Vac 264Vac) 50/60Hz Black START/STOP RUN Connect with GND (Grey) Defrost DEF ( ) Connect with GND Yellow Digital Input ① /RS485 Connect with RUN, defrost ②...
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Figure 1 Figure 2 Figure 3 L / DC24V+ N / DC24V- Figure 4 Passive input connection Figure 5 Active input connection Remote display (optional) wiring diagram shown as above: × × Dimension 84(W) 36(H) 19.4(D)mm × Hole size 71(W) 30(H)mm The communication cable between the remote display and the controller recommends a twisted pair ×...
It is recommended to install the temperature sensor and pressure transmitter on the suction line within 0.5m from the outlet of the evaporator to avoid the interference of the superheat calculation from the environmental temperature and pressure drop. 2. Button and operation ★...
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Definition Description Definition Description ℃ Display temperature/ Display current EEV /bar OPEN pressure unit opening ★ Display current suction Display suction TEMP superheat temperature Display saturated ᅠ Display current temperature PRESS evaporating pressure corresponding to PRESS suction pressure Running state Long press Correct password?
, a. In the power-on state Long press for more than 3s, enter to parameter setting mode. ( ) b. When screen displays , press until screen shows 5 default password , press to enter to parameter list. ᅠ、 ( )...
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Holding Register Working SETUP Description Wire connection Address mode MODE (code) • Valve manual operation mode ( ) Controlling • Control valve opening ratio mode 1 by pressing on the panel • Driving mode ( ) Controlling • Driving by external mode 2 1-5V analog signal •...
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3.2 Refrigerant selection In parameter list 4.Pr Holding Register Address Code Description Default value Range 5 (R507) Refrigerant selection -1~35 14 (R744-CO For SEC631-HD and SEC641-HD, default value of d01 =14(R744). For SEC611-HD and SEC621-HD, default Note: value of d01 =5 (R507). There are a total of 36 refrigerants in the controller for selection Code Refrigerant...
4.5 Model Code (Read-only.) Address Description Code Unit Interval Min. Max. Default Max. suction pressure AD Min. suction pressure AD Refrigerant user-defined A1 Min -20000 Max 20000 parameters A1 A2 Min -20000 Max 20000 (R449A) A3 Min -20000 Max 20000 Refrigerant user-defined A1:9975 When the 40062 refrigerant is set to -1,...
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6. Communication status table RS485 Add. Function Unit Type SEC6X1-HD communication × Present Superheat Analog INT 16 ~ × Present pressure Analog INT 16 -1.0 99.0 ~ × EEV opening ratio Analog INT 16 100.0 ℃ ~ × Present temperature...
7. Communication 1. Support standard RS485 Modbus RTU protocol (2-wire half-duplex), with a maximum of 31 cascades. It is Ω recommended that the last controller be connected to the terminal with a resistance of 120 2. Use twisted-pair shielded cables (2P x 24AWG is recommended) for communication cables. The shielded cables at both ends of the cables must be grounded separately.
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