Shandong Luneng Control Co., Ltd.'s partial intelligent collection front-end performance list
Serial number | user | Unit capacity | Signing date | Remark |
Electricity Customers |
1 | Huadian International Electric Power Co., Ltd. Zouxian Power Plant | 1000MW | 2022 |
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2 | Zhangjiagang Shazhou Electric Power Co., Ltd. | 1000MW | 2021 |
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3 | Guodianfei County Power Generation Co., Ltd. | 2*600MW | 2022 |
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4 | Datang Huangdao Power Generation Co., Ltd. | 2*600MW | 2022 |
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5 | Liaoning Fushun Oriental Power Generation Co., Ltd. | 2*660MW | 2021 |
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6 | Huadian Longkou Power Generation Co., Ltd. | 2*300MW | 2018 |
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7 | Shandong Jimin Luneng Coal and Electricity Co., Ltd. Yangcheng Power Plant | 2*150MW | 2022 |
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8 | … | … |
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Chemical Users |
1 | Inner Mongolia Changxin Chemical Co., Ltd. | Chemical plant | 2021 |
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2 | Guizhou Zhenfeng County Jiusheng Energy Co., Ltd. | Chemical plant | 2021 |
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3 | Hancheng Heli Coal Coal Co., Ltd. | Chemical plant | 2021 |
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4 | Inner Mongolia Qitai Chemical Co., Ltd. | Chemical plant | 2020 |
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5 | Shaanxi Zhonghui Coal Coking Co., Ltd. | Chemical plant | 2020 |
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6 | … | … |
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1 Product Overview
The front end of the LK200 series intelligent acquisition adopts a dual redundant RS485 communication interface, supports MODBUS-RTU protocol, can connect to PLC, DCS and various configuration software at home and abroad, and is widely used in power, chemical, petroleum and metallurgy industries. It is mainly used in temperature measurement during the production process. It adopts wall-mounted grounding installation, saves cables, works stably, does not require calibration, and has built-in operating keys and LCD display screen for convenient on-site debugging.
2 Product Features
1 High precision
The front end of the LK200 series intelligent data acquisition uses a 24-bit AD sampling chip, with higher sampling accuracy
2 High stability
LK200 series intelligent data acquisition front end is equipped with a watchdog circuit to prevent the device from crashing. Moreover, the intelligent front end has been running on site for a period of time, and the device operates stably during the period and there is no crash.
3 types vary
The front end of the LK200 series intelligent data acquisition includes four types of products: LK200-A, LK200-B, LK200-C, and LK200-DS. The LK200-B type products can be divided into three types of products: LK200-B1, LK200-B2, and LK200-B3. Users can choose suitable products based on the on-site situation.
4 Power down protection in working mode
When the device powers down and then powers back on and runs, the device will run in the working mode saved by the device before the power down
4 Good human-computer interaction performance
The front end of the LK200 series intelligent data acquisition is equipped with LCD display and film buttons, which facilitates on-site personnel to view and collect data and configure the front-end equipment.
Three Product parameters
name | parameter |
Product Classification | LK200-A |
LK200-B | LK200-B1 |
LK200-B2 |
LK200-B3 |
LK200-C |
LK200-D |
Signal type | Thermocouple | J, S, E, T, K |
Thermal resistance | EA2, Ba2, Ba1, G, Cu50, Cu100, Pt100 |
mV | 0-65.535mV |
V | 0-5V |
mA | 0-10mA, 4-20mA |
Channel parameters | Number of channels | LK200-A | Route 20 |
LK200-B |
LK200-C | 24 routes |
LK200-D |
Thermocouple cold terminal Compensation method | Ambient temperature compensation |
Constant temperature compensation |
Other channel compensation |
Measurement method | 3/2 wire system |
Common mode suppression | 120dB |
Differential mode suppression | 70dB |
Resolution | 24-bit, measurement accuracy level 0.1 |
Communication parameters | Number of interfaces | 2-way redundancy |
Communication Protocol | MODBUS protocol RTU mode, half-duplex asynchronous communication |
Communication medium | Shielded twisted pair wire |
Communication rate | 9.6K, 19.2K, 38.4K can be set |
Data format | 1 start bit, 8 data bits, and one stop bit. The verification includes three types: none, odd, and even. |
Communication distance | 1.2Km |
Communication verification | CRC cyclic redundancy verification |
Number of main websites on the Internet | 1~2 units |
Front-end address | 0~63 |
Main site type | DCS, industrial control machines, compatible machines, etc. |
Number of network slave stations (i.e. the number of front-ends that can be attached to a network) | ≤50 |
Network topology | Linear bus, if the distance is long, there is a terminal (match resistor) at both ends, the short line is ≤0.3m, no branches |
Other parameters | Appearance size | LK200-A | 252×240×33mm |
LK200-B | 210×99×65mm |
Power supply | 165-250VAC |
Environment parameters | Temperature -20~70℃, humidity ≤85% RH |
Four module measurement signal description
| LK200-A | LK200-B1 | LK200-B2 | LK200-B3 | LK200-C | LK200-D |
Thermocouple | 1-20 channels can be measured | 1-8 channels are measurable | All channels are unmeasurable | 1-24 channels can be measured |
Thermal resistance |
mV |
V |
mA | All channels can be measured, but 24V power supply is not provided. In addition, if the user needs to measure the mA signal, please add instructions when ordering. | 9-20 channels are measurable and can provide 24V power supply | All channels are measurable and can provide 24V power supply | All channels can be measured, but LK200-D does not provide 24V power supply, LK200-C provides on-board 24V; in addition, if the user needs to measure the mA signal, add instructions when ordering, |
