SF-102S Digital Temperature Controller For Freezer,Chiller, Refrigeration System, Condensing Unit
Features of Function
* Mini-sized and integrated intelligent control and applicable to the compressor of one HP.
* Temperature Display/ Temperature Control/ Manual, automatic defrost by turning off /Light Control/Value Storing/ Self Testing /Parameter Locking.
Specifications
1. Output of the outside sealed transformer:AC12V(one transformer matched with one temp. controller)
2. Temperature sensor: NTC, Double sensors(for cold room temp.&defrost control),2m(L)
3. Range of temperature displayed : -45 ~ 45℃ ; Accuracy:±1℃
4. Range of set temperature: -45 ~ 45℃ ; Factory default :±1℃
5. Temperature of the operating environment: -10 ~ 60℃ ; Relative Humidity:20%~90%(Non-condensing)
6. Relay rated coil voltage:12VDC
7. Relay output contact capacity: -Compressor relay: N.O. 30A/250VAC (applicable to 1 HP Compressor,if more connected to AC contactor) -Light relay: N.O.30A/240VAC
Technical Parameters
Parameter | Function | Set range | Default |
E1 | Lower setpoint limit | -45℃~Set temp. | -35℃ |
E2 | Higher setpoint limit | Set temp.~45℃ | 20℃ |
E3 | Temp.hysteresis | 1~10℃ | 4℃ |
E4 | Comp.start delay time | 0~10Min | 2Min |
E5 | Offset on room temp. | -5℃ | 0℃ |
E6 | Offset on evap. temp. | -5℃ | 0℃ |
F1 | Max.Defrost duration | 1~60Min | 20Min |
F2 | Defrost interval time | 0~24Hr | 6Hr |
F3 | Defrost termination temp. | 0~20℃ | 8℃ |
F4 | Display during defrost | 0=normal display 1= last value before defrost | 0 |
C1 | Temperature unit | 0=℃ | 0 |
Notes for Installation
1. Sensor 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 installation the sensor 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.
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
1. One attached transformer and two relays
2. Two temperature sensors
3. One installation stand