Shangfang SF-102 User manual

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Stand Cover Panel
Model: SF-I02 Digital Temperature Controller
Refrigeration LED Defrollt LED
Features of Function
• It is a mini-sized and integrated intelligent controller and applicable to the compressor of one HP.
• Main functions: Temperature Display/ Temperature Control/ Manual, automatic defrost by
turning off compressor / Light Control Value Storing/ Self Testing /Parameter Locking'
Specifications
l. Output of the outside sealed transformer: 12VAC(one transformer matched with one temp. controller)
2. Temperature sensor: NTC, doublc sensors (for cold-room temp.& defrost control),2m(L)
3. Rangeoftemperaturedisplay:-45~+150'C (-45-+150r); Accuracy:±I'C (±2r)
4. Range of set temperature: -45~+45'C (-45-+ 113r); Factory default :O'C (32r)
5. Dimension:77(Length) X 35(Width) X 60(Depth)mm
Mounting hole dimension:71 (Length) X 29(Width)mm
6. Temperature of the operating environment:-10~60'C (14~ 140r);
Relative Humidity:20%-90%(Non-condensing)
7. Relay output contact capacity
• Compressor: N.O. 20A/250VAC
(applicable to one HP Compressor, ifmore it needs to connect an toAC contactor)
• Light: N.O. 5A/250VAC
Front Panel Operation
I . Set temperature
• Press ~ button, the set temperature is displayed.
• Press ~ or ~ button to modify and store the displayed value. Press ~ button to exit the adjustment
and display the cold-room temperature.
• Ifno more button is pressed within 10 seconds, the cold-room temperature will be displayed.
2. Light: Press ~ button, it lights; Press again, it stops.
3. Manual start/stop defrost: Press ~ button and hold for 6 seconds to defrost or stop defrost.
4. Display the evap. Temperature: Press ~ button and hold for 6 seconds, the evap. temp. is displayed,
after 10 seconds the cold-room temp. is resumed to be displayed.
5. Refrigeration LED: During refrigeration, the LED is on; When the cold room temp. is constant, the LED
is off; During the delay, the LED flashes.
6. Defrost LED: during defrosting, the LED is on; When it stops defrosting, the LED is off. During the delay
display of defrost, the LED flashes.
7. Parameter setup
• Press ~ button for 6 seconds to enter parameter setting, at the same time "PAS" will be displayed and
flash; press ~or ~ to enter a tens digit and press ~ button to confirm;and then press ~ or ~ to enter
a single digit and press ~ button to confirm. Ifit is correct, parameter code EI will be displayed (when
it is set to 00, the password will be cancelled).
• Press again~button to select sequentially from the parameters: E2,E3,E4,E5,E6,Fl ,F2,F3,F4,CI.
• Press ~ or ~ button, the value of parameter will be displayed and can be modified and stored.
• Ifno more button is pressed within 10 seconds, it will return to normal operation mode.
Parameter
Function Set range Default
Parameter
Function Set range Default
PAS assword
00-99
E6 Offset on evap. Temp. -20-20 "C 0
36-36'F
EI Lower setpoint limit 4S"C-Settemp
22C
-4SF .
-8'F FI Max. Defrost duration 1-60Min 20Min
E2 Higb~r setpoint limit 4S"C 10"C F2
Defrost interval time 0-24Hr 4Hr
Settemp'-113'F
SOF
F3 Defrost termination temp.
0-4SC
8"C
l-lO"C S"C 32-113'F 46'F
E3 Temp. hysteresis
1
18 'F 9'F O-Normal display
E4 Camp. start delay time O-IOMia 2Mia F4 Display during defrost I
= Last value 0
20-20"C before defrost
ES Offset on room temp. -36-36'F 0CI Temperature unit Celsius= C Fahr.= F 'C

8. Parameter locking:
Press ~ button for 6 seconds, when "OFF" is displayed and flashes, it means set temperature is locked,
the set temperature just can be checked and can not be modified; when 0 "is displayed and flashes, it
means unlocking.
Function details
I. Temperature Control
• After turning on for the delay time ,the compressor starts operating when cold-room temperature;::': (set
temperature+ Hysteresis), and will be off when cold-room temperature ~ set temperature.
• To protect the compressor, it can not be re-started unless the time when the compressor stops every time is
longer than the delay time(Parameter E4).
2. Defrosting Functions
• It defrosts only if the temp.ofthe evap.sensor is less than the defrost termination temp.(Parameter F3)
• Operating after a defrost interval time it will automatically enter the status of defrost. If the temperature
of evap. sensor is less than the defrost termination temperature, the defrost LED will turn on, and the
compressor will stop.
• When the temp. of the evap. Sensor is over the temp. of defrost termination; or the defrsot duration ends,
the compressor will exit the defrost status. After two minutes dripping time it will enter in the normal
status of refrigeration.
• When the defrost interval time is set to "00" , the function of automatic defrost will be cancelled.
3. Display during defrost
• When setting the parameter F4= l,the room temp. is locked during defrost, and the last value before
defrost is displayed. When defrost ends, normal display will be resumed after 20 minutes delay of room
temp. display. The defrost LED flashes during the delay.
4. Abnormal work mode
• When the room sensor is short-circuited or overheated (more than ISO'C / lS0r) "HH" is displayed;When
the room sensor is open-circuited or temperature is too low (less than -4S'C / -4Sr) "LL" is displayed.
At that time the compressor automatically works by the cycle of 4S minutes on and IS minutes off.
• When the Evap. sensor fails or over the displayed range, the defrost termination will be just controlled by
the defrost duration.(Parameter F I)
S. Circuit Diagram
20A5A /250VAC
AC
LINE
Notes for Installation
I. The sensor cable leads must be kept separately from main voltage wires in order to avoid high frequency
noise induced. Separate the power supply of the loads from the power supply of the controller.
2. When install the sensor, it shall be placed with the head upward and the wire downward; The evaporator
sensor must be installed between the fins of the evaporator in the area, where probably the ice is the
thickest. Don't place the evaporator sensor near the electric heater.
3. In case of long-distance sensor installation from the controller, the sensor cable may be prolonged up to
100 m max. without any re-calibration.
4. The temperature controller can not be installed in the area with water drops.
Accessories for the temperature controller
I. One attached transformer
2. Two temperature sensors
3. One installation stand
4. One cover panel and I <I>3 X I Omm screw