Controller Whicepart EL-974 (Microprocessor 2-Sensor) 220V 10A

Controller Whicepart EL-974 (Microprocessor 2-Sensor).

The Whicepart EL-974 temperature controller (microprocessor) is designed for ventilated refrigeration systems with medium to low temperatures (-45/+10°C), refrigeration chambers, displays, and freezer cabinets.

It features inputs for two temperature sensors, either RTD or NTC (for controller and evaporator), three digital output relays for compressor, fan, and defrost control, and one multifunctional input that can serve as both a digital input and a temperature sensor. Additionally, a TTL port is provided for using a copying card for quick device programming.

Defrost cycle duration can be determined based on programmed time intervals as well as by the sensor reaching a defined value on the evaporator. The sensor's reading is displayed on a 3-digit display (with a minus sign). Temperature adjustment within the device ranges from -50 to +110°C.

Technical Specifications:

• 1 Fan Relay: Max 5(2)A at 250V AC;
• 1 Compressor Relay: UL60730 (A) 2 HP (12FLA – 72LRA) max 240V AC;
• Analog Inputs: 2 inputs for NTC (default)/PTC/PT1000 (configured by parameter H00);
• NTC Indication Range: -50°C to +110°C; PT1000: -55°C to +150°C; PTC: -55°C to +140°C;
• Accuracy: NTC +/- 0.5°C (-30...50°C), other sensors +/- 1°C (-30°C...50°C), other +/- 2°C;
• Digital Inputs: 2 voltage-free inputs ("dry contacts");
• Digital Outputs: 1 defrost relay: normally open 8(4)A – normally closed 6(3)A max 250V AC;
• Display Resolution: 1°C/0.1°C with switching between whole and decimal values.

Operating Conditions:

• Voltage: 230V AC 50/60 Hz.
• Temperature: -5°C to 55°C, humidity 10% to 90% (non-condensing);
• Storage Temperature: -30°C to 85°C.

Specifications:

• Dimensions: 72mm x 34mm x 60mm.
• Sensor Length: 2 meters.

Compatible Brand : Whicepart

Manufacturer : Whicepart

Brands for customs : Whicepart

Number of sensors : 2

Voltage, V : 220

Manufacturer for customs : Whicepart

Current strength, A : 10

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