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Address
Room 593, Building A, No. 9 Fengxiang East Street, Yangsong Town, Huairou District, Beijing
Product Categories
Beijing Eklens Electric Co., Ltd
Supply of energy-saving automatic control system for central air conditioning
NegotiableUpdate on 05/14
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Overview
The rated working voltage of the central air conditioning energy-saving automatic control system is 12VDC, with 16 thermistor input channels, of which 12 are used to detect 10K Ω thermistors and 4 are used to detect 100K Ω thermistors; 12 12V DC input switch channels and 15 24V DC/220V AC relay output channels; 4-channel electronic expansion valve (Sanhua, Lugong, etc.) drive interface.
Product Details
Central air conditioning energy-saving automatic control systemThe rated working voltage is 12VDC, with 16 thermistor input channels, of which 12 are used to detect 10K Ω thermistors and 4 are used to detect 100K Ω thermistors; 12 12V DC input switch channels and 15 24V DC/220V AC relay output channels; 4-channel electronic expansion valve (Sanhua, Lugong, etc.) drive interface.
Central air conditioning energy-saving automatic control systemProduct performance
Body I/O: 12 channels of 12V DC input
15 relay outputs, relay rated current is 10A (AC220V)
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Storage capacity: 120K bytes in the program area; 10K bytes in data N area and 5K bytes in data M area; Power down hold area 2K bytes
Timer: 1 hardware timer, 0.1ms~500ms, software timer unlimited point (minimum unit 1ms)
Counter: 16 bits, unlimited points
Calculation speed: 0.06 μ s (Boolean operation instruction)
Communication interface: 1 RS232, 2 RS485
Communication protocol: MODBUS RTU protocol, free protocol
Power parameters
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Power parameters |
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power supply voltage |
12V DC |
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permissible range |
11～13VDC |
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Maximum current |
2000mA |
Digital input and output
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Digital input |
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input type |
prototype |
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input signal |
Rated voltage 12V DC |
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Allowable range 0-13V DC |
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Input ON signal |
8～13V DC， Allow a minimum current of 3mA |
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Input OFF signal |
0～5V DC， Maximum allowable current 1mA |
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digital output |
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output type |
relay |
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output voltage |
0-24V DC or 24-230V AC |
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Total output current of the common terminal |
<10A |
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Switch delay |
<10ms |
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Isolation voltage between coil and contact |
3000VAC， 1 minute, leakage current 1mA |
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Isolation voltage between contacts |
750VAC， 1 minute, leakage current 1mA |
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Mechanical lifespan of relay |
When there is no load, it can reach more than 10000000 times When the rated resistive load is 10A, it can reach more than 100000 times |
Analog input
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Analog input |
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number of channels |
16 way NTC |
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input type |
Thermistor, B value optional At R25 ℃, 12 channels are 10K Ω and 4 channels are 100K Ω |
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Input accuracy |
0.2% FS@25 ℃ (voltage) (FS represents full scale, @ 25 ℃ represents at 25 ℃) |
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Temperature resolution |
0.1℃ |
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Sampling refresh time |
100ms (full channel) |
Electronic expansion valve drive
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Electronic expansion valve drive |
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Output channel |
4 routes |
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Scope of application |
5-core 12V series electronic expansion valve |
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