Sanhua SEC Series Manuale utente
Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
SEC series EEV Controller
Manual/Installation Instructions
Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
CAUTIONS
1. This product may cause an electric shock in handling. Please do not attempt to open it with power turned on.
2. This product should be installed in a place fixed secured by a rack or panel.
3. This product can be used under the following environmental conditions:
• Indoor • Pollution Degree 2 • At an altitude of 2000m or below
4. Power input must be within the designated ranges.
5. To turn on or turn o power supply for this product, please use the circuit breaker or switch of a standard product of
IEC 60947-1 or IEC 60947-3 product and install it within a close distance allowing convenient operation by user provided.
6. An output wire to be used for this product should be inflammable grade FV1(v-1 grade or above). The thickness of the wire
should 0.08mm²~1.3 mm²
7. In order to prevent it from an inductive noise, please maintain the high-voltage wire and power wire separated.
8. Please avoid installing the product in a place where a strong magnetism, noise, severe vibration and impact exist.
9. When extending the sensor wire, use a shield wire and do not extend it unnecessary long.
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)
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Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
1. Basic specifications
Items Description
Dimension 87(W)mm x 114(H)mm x 30 (D)mm
Power supply
24Vac +10%/-15%, 50/60Hz (SEC611)
24Vdc+10%/-10% (SEC611 & SEC612)
Class II
Power consumption Max 4W at 24Vdc
Connection
Pluggable terminal: Screw M2
Min/Max wire diameter: 0.08²~1.3 mm²
XHP terminal
Input
Pressure sensor
Temperature sensor
RUN signal Passive switch signal
Output Relay output 30Vdc/5A
EEV (uni-polar) output
Communication RS 485
Operation -30~55 oC, Humidity≤95%RH
Storage -30~55 oC, Humidity≤95%RH
Protection level IP20
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Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
2. Installation Notes
a. DIN slide rail mounting
Mount the controller on the DIN rail by the snap on the back of the controller.
Installed in the electric control cabinet to avoid moisture and dust.
b. Sensors installation
Pressure transmitter / temperature sensor installed on the tube of evapora tor outlet. If the system is divided
into several eva porators, install pressure transmitter / 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.
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Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
Type Function Label Description
Pluggable
terminal
Power supply 24Vac/Vdc
+24V AC24V / DC24V+
-24V AC24V / DC24V-
Compressor signal
and comm port
RUN
GND Passive swithcing signal, open or close
synchronously with the compressor, close when
using manual mode
S/W
RS485
GND GND
B- TRX-(B)
A+ TRX+(A)
Auxiliary relay output AUX-RLY
N.O. Normally Open contact
COM Common
N.C. Normally Open contact
XHP
terminal
Pressure sensor P-SENS
Vcc
Power: YCQB: +5V
(RED) YCQC: 10-30Vdc
S1
S1 YCQB: 0.5-3.5V
(White) YCQC: 4-20mA
GND
GND YCQB: GND
(Black) YCQC: N/A
Temp. sensor T-SENS
S2
NTCSK/B3970
GND
EEV output EEV MOTOR
A
B
A
B
COM
3. Wire Connections
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_
_
0.2 ~ 1.3 mm²
Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
Safety Tips:
1. Do not turn on the power before completing the wiring, cut o the power before changing the wiring.
2. The RUN port (compressor signal) is a passive port. If add a voltage it may cause the controller burn out.
3. Ultracapacitor please series connected to the power supply wire. (Coming soon)
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.
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Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
4. DIP SW Setting
1
ON
234
1
ON
234
1
ON
234
1
ON
234
All DIP switches are OFF in default mode (suitable for most applications). There are 4 DIP switches, 2, 3 used
as a group for selecting EEV type, 1, 4 used as a group for selecting controller operating mode.
(Default mode)
DIP SW2: OFF, DIP SW3: OFF
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
a. EEV type selecting
EEV total steps, excitation speed and excitation mode is determined by the DIP SW2, 3
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Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
DIP SW position Description Schematic
- DIP SW1: OFF, DIP SW4: OFF
- Superheat control (Default mode)
- Temp./pressure signal ensures
system SH stable
- DIP SW1: ON, DIP SW4: OFF
- Manual operation
- Use Button directly
controls the valve opening ratio
- DIP SW1: ON, DIP SW4: ON
- Drive mode
- Use 4-20mA or 1-5Vanalog
signal control
- DIP SW1: OFF, DIP SW4: ON
- Hot gas bypass
(temperature control)
1
ON
234
1
ON
234
1
ON
234
1
ON
234
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.
b. Control method selecting
Control method determined by the DIP SW1, 4
8 / 17
Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
5. Buttons and operation
LED Description
SH Display current superheat
PRESS Display pressure sensor value
OPEN Display current EEV opening
TEMP Display temperature sensor value
oC /bar Unit of temp./pressure
Lighting when alarming
Flickering at communication mode
POWER Lighting at power up
TX,RX Flickering at communication
a. Screen introduction
Use button can switch the display on screen among superheat/
pressure/valve opening/temperature (current display is indicated by the cursor
pointer)
b. 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
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Copyright © SANHUA 2019
Subject to change without notice
II-SEC61-EN-R2010
c. Set/change parameters
Operation Status
Parameter 1
•
•
•
Parameter N
Parameter 1
•
•
•
Parameter N
Press for 3 seconds to input password
When display this screen, press untill display 5 (original password).
Then press to set parameters
Parameter 1
•
•
•
Parameter N
1. During operating status, long press for more than 3s, enter parameter setting mode
2. When screen show , press until screen display 5 (original password), then press enter parameters table list
3. means parameters table1, press can select or (switching parameter table)
4. After selected parameters table, press enter the table, if you want to switch other parameter tables, press return to the
parameter table select list
5. In parameters table, screen will directly display the parameter code, press can switch the code in parameters table
6. When the screen displays the parameter code which you want to modify, press can modify parameters directly,
and press will turn to next parameter or press return to the parameter table select list
7. After finish modifying, long press for 3s will save all settings and return to the operating interface.
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