To enhance the quality of manufacturing as responsibility, build national brand of measurement!
To enhance the quality of manufacturing as responsibility, build national brand of measurement!
OneSummary
DC distributed I/O sub station is an important part of DMC300 distributed control system based on the concept of digital front-end, mainly used to detect back detection switch control switch, and a variety of industrial field such as auxiliary contact or other low speed switch, as the terminal of the remote monitoring system.
DC series of I/O sub station’s input, output, power supply, communication lines between the establishment of a high reliability of electrical isolation, to ensure the safe use of sub stations, and can effectively suppress a variety of electromagnetic interference.
can effectively suppress a variety of electromagnetic interference. Communication system uses optical fiber transmission, has the strongest anti-interference ability.
Each DC series distributed I/O sub station includes independent power supply, communication system and microprocessor, each sub station has a strong independence, a sub station damage does not affect the normal operation of any other sub stations.
TwoSchematic diagram
DC series distributed I/O sub station working principle as shown in the following figure:
OneNaming rules
4 channel switch quantity detection 4 channel relay control module:
TwoList of commonly used sub stations
| Model | Performance index | Physical map |
| DC0602 | Function: 6 channels switch detection and 2 channels relay control Input signal type: 6 passive input Output signal type: 2 relay output, 220V/1A Communication interface: optical fiber |
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| DC0404 | Function: 4 channels switch detection 4 channels relay contro Input: 4 passive input Output: 4 relay output, 220V/1A Communication: optical fiber |
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| DC1204 | Function: 12 channels switch detection and 4 channels relay control Input: 12 passive input Output: 4 relay output, 220V/1A Communication: optical fiber |
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| DC0400 | Function: 4 channels switch detection Input: 4 passive input Output: None Communication: optical fiber |
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| DC0800 | Function: 8 channels switch detection Input: 8 passive input Output: None Communication: optical fiber |
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| DC0008 | Function: 8 channels relay control Input: None Output: 8 relay output, 220V/1A Communication: optical fiber |
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| DC0016 | Function: 16 channels relay control Input: None Output: 16 relay output, 220V/1A Communication: optical fiber |
OneElectrical isolation
1500Vrms isolation between input signal and power supply;
110kV isolation between fiber output and input and power supply.
TwoElectromagnetic compatibility
Digital transmission, with strong anti-interference ability.
When the output is transmitted by optical fiber, the transmission is not affected by electromagnetic interference.
ThreeIndependence
Each sub station uses an independent power supply, communication system and microprocessor, each sub station has a strong independence, a sub station does not affect the normal operation of any other sub station.
The host can display the online terminal in real time.
FourCommunication protoco
The AnyBus asynchronous serial communication protocol which is suitable for synchronous high speed sampling is adopted.
China's leading enterprise in variable frequency power measurement and metering
National variable frequency power measuring instrument (metering station) founder
Research and development unit of national variable frequency power metering standard