Sanhua SEC61X SERIES Operation 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

PRODUCT DATA
Copyright © SANHUA 2020 2 DS-SEC61X-NA-EN-0620
Subject to change without notice
SEC61X SERIES | Electronic Expansion Valve Controller
SEC Controller
Items Description
Dimension 2.83” (72mm) × 4.49” (114mm) × 1.14” (29mm)
Supply Voltage 24VAC/DC +10%/-15%, 50/60Hz, minimum 15 VA
Connections Removeable screw terminals (28 to 16 AWG)
XHP plug-in terminals
Input Pressure transducer
Temperature sensor
RUN signal
Output
(250VAC/30VDC/5A)
Relay output (250VAC/30VDC/5A)
EEV (unipolar) output
Operation Temperature: -13°F (-25°C) to 140°F (60°C), Humidity: ≤ 95%RH
Storage Temperature: -22°F (-30°C) to 140°F (60°C), Humidity: ≤ 95%RH
Connected Components
Items Model Description
Controller SEC613-R4 Available for voltage pressure sensor, °F/psig
SEC614-R4 Available for current pressure transducer, °F/psig
Temp. Sensor NTC2A1 6.5 ft Temperature Sensor
NTC5A1 16 ft Temperature Sensor
NTC9A1 30 ft Temperature Sensor
Pressure Tranducer YCQB02H01-1 Voltage with ¼” ODM Solder connection, 6.5 ft cable
YCQB02L12-1 Voltage with ¼” SAE Flare connection, 6.5 ft cable
YCQB02H18-1 Voltage with ¼” ODM Solder connection, 16 ft cable
YCQB02L28-1 Voltage with ¼” SAE Flare connection, 16 ft cable
YCQC02L18 Current with ¼” SAE Flare connection, Packard connection
Packard Cable YCQB02-013054 For YCQC02L18 with 20 ft cable
YCQB02-013055 For YCQC02L18 with 30 ft cable

PRODUCT DATA
Copyright © SANHUA 2020 3 DS-SEC61X-NA-EN-0620
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SEC61X SERIES | Electronic Expansion Valve Controller
Temperature Sensor
Items Description
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
Connection Kit
NTC 5K
TEMPERATURE VS. RESISTANCE
Temperature Resistance
°F °C (k ohms)
-58 -50 347
-40 -40 173
-22 -30 90.2
-4 -20 40.2
14 -10 2 7.9
32 0 16.4
50 10 10.0
68 20 6.3
86 30 4.0
104 40 2.7
122 50 1.8
Pressure Transducer
YCQB (Voltage) YCQC (Current)
Supply Voltage 5 ± 0.25 VDC 10 to 30 VDC
Output 0.5 to 3.5 VDC 4 to 20mA
Measure Range 0 to 290 PSI -14.5 to 174 PSI
Test Pressure 761 PSI 761 PSI
Accuracy ±0.8% F.S. (140 to 104°F) ±0.8% F.S. (140 to 104°F)
Protection Class IP 67 IP 67
Connector Type 1/4” ODM Solder or
1/4” SAE Flare 1/4” SAE Flare
Electrical Connector JST-XHP Connector with attached Cable Packard Connector, Cable Separate

PRODUCT DATA
Copyright © SANHUA 2020 4 DS-SEC61X-NA-EN-0620
Subject to change without notice
SEC61X SERIES | Electronic Expansion Valve Controller
DIMENSIONS
SYSTEM PLACEMENT DIAGRAM
* The reset button on the side of the device performs a power-cycle of the device. No settings are changed by the reset button.

PRODUCT DATA
Copyright © SANHUA 2020 5 DS-SEC61X-NA-EN-0620
Subject to change without notice
SEC61X SERIES | Electronic Expansion Valve Controller
CONNECTION DIAGRAM
Pressure sensor
EEV
Temperature
sensor
24VAC/DC
15 VA

PRODUCT DATA
Copyright © SANHUA 2020 6 DS-SEC61X-NA-EN-0620
Subject to change without notice
SEC61X SERIES | Electronic Expansion Valve Controller
LED Display and Operating Buttons
MENU NAVIGATION
Definition Description
LED Display
Super Heat Display Superheat
Press Display pressure
Open% Display valve open ratio
Temperature Display temperature
F/PSIG Display the unit of
temp./pressure
Lighting when alarming
Flickering at
manual mode
Power Lighting at power up
TX, RX Flickering at
communication
Button
Parameter change mode
Increase or upward
Decrease or downward
Select and save
1) Press PRG button for 3s to begin, enter password (default is 5) by
pressing the UP button, then press SEL button to enter the menu
options (if password is incorrect, system enters “view only” mode)
2) Use UP/DOWN buttons to move between the 3 menus, press SEL to
enter the menu, then press SEL button to cycle through the parameter
options;
3) Change the parameter value with UP/DOWN button, press SEL to move
to the next parameter;
4) Press SEL for 3s to save all parameters and exit the parameters setting
mode.
OPERATION

PRODUCT DATA
Copyright © SANHUA 2020 7 DS-SEC61X-NA-EN-0620
Subject to change without notice
A. EEV Type Selection
B. Control Method Selection
SEC61X SERIES | Electronic Expansion Valve Controller
SETTINGS | DIP SW switch settings
DIP SW Position Description
(Default mode)
DIP SW2: OFF, DIP SW3: OFF
1-2 phase, 500 steps, 30PPS
DIP SW2: OFF, DIP SW3: ON
2 phase, 2000 steps, 100PPS
DIP SW2: ON DIP SW3: ON
Custom mode, set by parameters table 3
DIP SW Position Description Schematic
(Default Mode)
-DIP SW1: OFF, DIP SW4: OFF
- Superheat control
-Automatic mode. Temp./pressure signal
ensures system SH stale
-Possible to operate valve via RS485 comm.
-DIP SW1: ON, DIP DW4: OFF
-Manual operation
-Use buttons directly
to control the valve opening ratio
-Possible to operate valve via RS485 comm.
-DIP SW1: ON, DIP SW4: ON
-Drive mode
-Use 4-20mA or 1-5V analog signal control
-DIP SW1: OFF, DIP SW4: ON
-Hot gas bypass (temperature control)
-Precise temp. control by controlling
discharge air temperature

PRODUCT DATA
Copyright © SANHUA 2020 8 DS-SEC61X-NA-EN-0620
Subject to change without notice
SEC61X SERIES | Electronic Expansion Valve Controller
CONTROL MODES
1) Superheat control (DIP SW1:OFF, DIP SW4:OFF)
2) EEV Driver (Positioner) (DIP SW1:ON, DIP SW4:ON)
Function Code Min. Mx. Default*
Superheat set-point SH 0.5 30 10.8 (108)
Start open ratio BIR 0 100 0
Start open ratio duration time SDT 0 300 0
P: Proportional gain DFR 0.1 99.9 3.0 (30)
I: Integral time IRT 0999 20
D: Derivative time DRT 0999 4
Application Parameters
*Default as displayed on controller menu.
Modbus address value in parenthesis
Change operation mode to drive mode, using external reference signal of
4-20mA or 1-5V to drive the EEV. At this time, the RUN signal should be ON.

PRODUCT DATA
Copyright © SANHUA 2020 9 DS-SEC61X-NA-EN-0620
Subject to change without notice
SEC61X SERIES | Electronic Expansion Valve Controller
CONTROL MODES (CONTINUED)
3) Discharge Air Temperature control
(DIP SW1:OFF, DIP SW4:ON) Function Code Min. Mx. Default*
Set point for control target** SH 0.5 30 10.8 (108)
Start open ratio BIR 0 100 0
Start open ratio duration time SDT 0 300 0
P: Proportional gain DFR 0.1 99.9 3.0 (30)
I: Integral time IRT 0999 20
D: Derivative time DRT 0999 4
* Default as displayed on controller menu.
Modbus address value in parenthesis
**Parameter will be changed and applied from superheat
set point to temperature set point of control object.
Application Parameters
4) Manual control mode (DIP SW1: ON, DIP SW4: OFF)
Users can maintain valve open ratio arbitrarily. Change the DIP SW
switch and then press UP/DOWN button, the valve will change the
open ratio as the screen displayed.
At this time all LED on the left side will be flickering.
Run signal should be ON in this mode, if the Run signal is OFF, EEV
will be closed immediately.
It will be used when controlling temperature of the discharge air of an evaporator.
CAUTION! This mode will not help safeguard the compressor from liquid refrigerant.

PRODUCT DATA
Copyright © SANHUA 2020 10 DS-SEC61X-NA-EN-0620
Subject to change without notice
MODBUS
Address Description Code Unit Step Min. Max. Default*
40001 Superheat set-point SH °F0.1 0.5 99.9 10.8 (108)
40003 Start open ratio bIr % 1 0 100 0
40004 Start open ratio duration time Sdt Sec 1 0 600 0
40005 P:Proportional gain dFr %0.1 0.1 99.9 3.0 (30)
40006 I: Integral time Irt Sec 1 0 999 20
40007 D: Derivative time drt Sec 1 0 999 4
40008 Low SH alarm mode LS 0=No use , 1= automatic return, 2=manual return 1
40009 Low SH alarm value LSH °F0.1 0.5 30 0.9 (9)
40010 Low SH alarm delay time LSd Sec 1 1 300 15
40011 Clear low SH alarm LSF °F0.1 1 30.5 5.4 (54)
40012 MOP alarm mode mP 0=No use , 1= automatic return, 2=manual return 1
40013 MOP alarm pressure moP PSIG 0.1 -15 999 130
40014 MOP alarm delay time mPd Min 1 1 15 1
40015 Clear MOP alarm mPF PSIG 1 -15 129 116
40016 High SH alarm mode HS 0=No use , 1= automatic return, 2=manual return 0
40017 High SH alarm value HSH °F 1 10 40 54
40018 High SH alarm delay time HSd Sec 1 1 15 3
40019 Clear high SH alarm HSF °F 1 7 37 49
40021 Freeze prevention alarm mode Fr 0=No use , 1= automatic return, 2=manual return 0
40022 Freeze prevention alarm value FrE °F 1 -40 40 32
40023 Freeze prevention alarm delay time Frd Sec 1 5 200 30
40024 Clear freeze prevention alarm FrF °F 1 35 109 37
40025 Select pumpdown function and delay time Pd Sec 1 0 180 OFF (-1)
40026 Pressure set-point for stopping pumpdown PdP PSIG 1 -7 261 7
40027 Pressure low limit alarm mode LP 0=No use , 1= automatic return, 2=manual return 0
40028 Pressure low limit alarm value LoP PSIG 1 -12 256 0
40029 Low limit pressure alarm delay time LPd Sec 1 5 200 5
40030 Clear low limit pressure alarm LPF PSIG 1 3 261 4
SEC61X SERIES | Electronic Expansion Valve Controller
PARAMETERS
Menu 1 = 1.Pr
*Default as displayed on controller menu. Modbus address value in parenthesis.