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Sensor and accessories
Location Position：Home > Products & ApplicationsDK2000-ECF1116435
Product overview
"Single key operation, module control" is the design concept of Shanghai Di Kong HVAC products. It is hoped to provide users with a variety of temperature control options efficiently by using simple button operation. This digital temperature controller is a hidden installation, uses NTC temperature sensing components, contains S.P.S.T relays to control valve opening and closing, and uses built-in proportional, integral (PI), delay and dead zone control characteristics to accurately control room temperature. It is used in fan coil system, office, conference room, restaurant, hotel. DK2000-ECF** is mainly used in environmental heating and cooling control equipment. The controller itself includes: temperature sensing system, electric valve control system, fan speed control system, etc.
Product characteristics
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Supply power 220 Vac.
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Heating/cooling.
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16-bit MCU
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Suitable for 2 - and 4-tube systems.
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RS485 communication protocol Modbus RTU
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Two-line communication is adopted.
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Communication rate: 9600bps.
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Maximum communication range 4000 feet (ft).
Product characteristics
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Set point control
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On/off control
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Adopt external temperature sensing device
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Dial switch
input
NTC 10K ohm/25 °C negative resistance temperature coefficient sensing assembly, sensing indoor return air temperature, control valve opening and closing and fan speed (AI1, terminal 14; 15) · Antifreeze contact, dry contact input (terminal CON4, DI1: yellow wire; DM: Blue line)
output
Control valve proportional output 0-10Vdc (AO1:14; 16)
Fan high speed output, relay contact, contact rated capacity 220Vac, 7 amp (DO1, terminal 3; 6)
Fan medium speed output, relay contact, contact rated capacity 220Vac, 7 amp (DO2, terminal 4; 6)
Fan low speed output, relay contact, contact rated capacity 220Vac, 7 amp (DO3, terminal 5; 6)
Ice water control valve output (three-wire - valve open), relay contact, contact rated capacity 220Vac, 7 amp (DO4, terminal 7; 10)
Ice water control valve output (three-wire - valve close), relay contact, contact rated capacity 220Vac, 7 amp (DO4, terminal 8; 10)
Hot water control valve output (two-wire valve), relay contact, contact rated capacity 220Vac, 7 amp (DO5, terminal 9; 10)
Main engine remote control output, relay contact, contact rated capacity 220Vac, 7 amp (DO6, terminal 11; 12)
Product wiring
Product specification
Power Use/Power consumption 220 Vac / 10 VA (plus loads)
Analog input 1NTC negative resistance temperature coefficient sensing assembly,10 KOhm/25°C, accuracy: 0.1% full scale
Digital input 1 digital anti-freezing input, no voltage dry contact input (interference protection: optical coupling mode isolation)
Analog output 1 Analog output 0~20mA or 0~10v, proportional valve control
Digital Output 6 relay SPST n.o. Capacity :250 Vac,7 A
Control setting range 15-35 °C
Control scale belt factory set 2°C
Fan Output Mode 3 speeds - Automatic (high-Medium-low - Automatic)
The guard dog device automatically resets
Indicating device 2 green LED, power, communication / 1 red LED, communication
Case protection IP40
Weight 600g
Operating environment 0to 50 °C; 10 to 80% rh
Storage environment -20 to 70 °C; less then 90% rh
Product size
