The HollySys LT series RTU delivers robust, highly reliable remote intelligent control tailored specifically for oilfield beam pumping units. Engineered with a domestic ARM processor and an open-source Linux embedded operating system, this controller ensures complete technological autonomy across harsh onshore extraction fields. Beijing Zhongping Technology facilitates direct industrial distribution of this specialized hardware to optimize automated field management.
Operating within upstream oil and gas production infrastructure demands ruggedized hardware capable of withstanding extreme environmental stressors while executing precise remote monitoring. The HollySys LT series integrates advanced pumping unit control algorithms, encompassing rod-pumping optimization, intermittent extraction management, and automated power-saving operations during peak-valley electrical intervals. Field technicians leverage its multi-protocol connectivity via Modbus RTU and Modbus TCP to seamlessly bridge legacy telemetry equipment with modern IoT monitoring frameworks. Dual-network segment redundancy alongside diverse wireless networking options such as 4G, Zigbee, WiFi, and LoRa guarantees uninterrupted telemetry data transmission across distributed well pads.
Technical Specifications
Device Model: LT-CU-101 @ Standard Configuration
Device Model: LT-CU-102 @ Extended Configuration
Module Structure: Integrated @ Single Unit
Power Supply: 24 VDC @ 1.5 W Static Power Consumption
Power Supply: 220 VAC ± 30% / 24 VDC @ 3.0 W Static Power Consumption
Processor: 32-bit ARM9 @ 300 MHz Embedded Linux Operating System
Integrated Memory: 64 MB SDRAM @ System Runtime
Retentive Memory: 256 MB FLASH @ Non-Volatile Data Storage
Digital Inputs (DI): 4 Channels @ Isolated Terminal Block
Digital Outputs (DO): 2 Channels @ Relay / Transistor Output
Digital Outputs (DO): 4 Channels @ Relay / Transistor Output
Analog Inputs (AI): 2 Channels @ Standard Signal Range
Analog Inputs (AI): 4 Channels @ Standard Signal Range
Analog Outputs (AO): Not Applicable @ Base Unit
Analog Outputs (AO): 4 Channels @ Expansion Card Integration
Module Expansion: Not Applicable @ Base Unit
Module Expansion: Embedded 4AI + 4AO Expansion Card @ Dedicated Slot
RS485 Interface: 1 Port @ Screw Terminal
RS485 Interface: 2 Ports @ Screw Terminal
RS485 Communication Protocol: Modbus RTU / ASCII @ Serial Bus
RS232 Interface: 1 Port @ Standard DB9 / Terminal
RS232 Interface: 2 Ports @ Standard DB9 / Terminal
RS232 Communication Protocol: Modbus RTU / ASCII @ Serial Bus
Ethernet RJ45: 1 Port @ 10/100 Mbps
Ethernet RJ45: 2 Ports @ 10/100 Mbps
Ethernet Communication Protocol: Modbus TCP @ Network Layer
Dual-Network Redundancy: Not Supported @ Single Line Mode
Dual-Network Redundancy: Supported @ Dual-Network Segment Redundancy
Wireless Networking: Integrated Chipset @ 4G, Zigbee, WiFi, LoRa
USB Interface: 1 Port @ Maintenance and Logging
Operating Temperature: -40 °C - +80 °C @ Extended Thermal Range
Operating Humidity: 5% - 95% @ Non-Condensing Conditions
Operating Altitude: Less than or equal to 3,000 meters @ Standard Derating
Electrical Parameters: Not Applicable @ External Transducer Required
Electrical Parameters: Integrated 1-Well Electrical Parameter Acquisition @ Direct Input
Display Screen: Not Applicable @ Headless Operation
Display Screen: Integrated 320 x 240 Dot Matrix LCD Screen @ Local HMI
Module Dimensions: 135 mm x 100 mm x 40 mm @ Width x Height x Depth
Module Dimensions: 164 mm x 212 mm x 50 mm @ Width x Height x Depth
Mounting Method: Standard DIN Rail @ 35 mm Profile
Intermittent Pumping Control: Empty Stroke Control, Intermittent Pumping, Auto-Start @ Oilfield Logic
Remote Firmware Update: Supported @ Main Unit and Connected Sensors
System Integration and Hardware Setup
Deploying the HollySys LT series RTU in remote oilfield installations requires adherence to rigorous electrical installation practices. The unit mounts directly onto standard 35 mm DIN rails within NEMA-rated field control cabinets, ensuring mechanical stability under continuous vibration from reciprocating sucker rod pumps. System integrators must utilize shielded twisted-pair cables for all RS485 serial communication runs utilizing the Modbus RTU protocol to mitigate electromagnetic interference induced by variable frequency drives and high-voltage power lines. Grounding terminals on the chassis require a dedicated low-impedance path to the cabinet grounding bar to suppress transient voltage surges and prevent ground loops across distributed wellhead instrumentation. Power supply inputs must incorporate external lightning surge arresters, protecting the internal DC regulation circuitry from lightning strikes common in open-field environments. Sensor wiring for digital and analog inputs should be segregated physically from power distribution conduits to maintain signal integrity during high-speed data acquisition cycles.
Reliability and Environmental Durability
The hardware architecture of the HollySys LT series is engineered to endure harsh industrial environments without active cooling components. By utilizing a low-power design framework that maintains operational power consumption below 5 W, the unit minimizes internal thermal accumulation and eliminates the need for failure-prone cooling fans. Its wide-temperature operation range spanning from -40 °C to +80 °C allows seamless deployment across sub-zero northern oilfields and scorching desert extraction sites alike. Component selection complies strictly with rigorous industrial standards, ensuring long-term resistance to hydrogen sulfide corrosion and extreme humidity levels reaching up to 95%. Non-volatile flash memory guarantees absolute parameter retention during unexpected grid power failures, safeguarding historical production logs and configuration profiles. This high level of physical resilience significantly extends the mean time between failures across remote unattended installations.
Selection Guidance and Alternative Options
Selecting the appropriate RTU model depends on the specific monitoring density and communication requirements of the wellhead. Engineers dealing with basic single-well extraction can deploy the LT-CU-101 variant, which provides streamlined I/O counts and a single RS485 port suitable for standard Modbus RTU meter integration. For complex multi-parameter well sites requiring local LCD visualization, integrated electrical parameter acquisition, and dual Ethernet redundancy, the LT-CU-102 model serves as the optimal engineering choice. Beijing Zhongping Technology maintains a responsive regional technical inventory to assist engineering teams with cross-reference selection, model matching, and prompt component deployment for ongoing automation upgrades.
Frequently Asked Questions (FAQ)
1. What is the standard lead time for procuring HollySys LT series RTU units from regional stock?
Standard stock items are typically processed and dispatched within 3 to 5 business days, backed by comprehensive pre-shipment inspection protocols.
2. What warranty coverage applies to these industrial automation controllers?
All supplied units include a standard 12-month manufacturer warranty covering structural and operational defects under normal industrial use conditions.
3. How does the device handle communication over long distances in remote fields?
The unit integrates native RS485 interfaces supporting Modbus RTU over extended cable runs, alongside onboard 4G and LoRa wireless options for cellular and long-range radio telemetry.
4. Can the firmware of connected sensors be updated remotely?
Yes, the system architecture supports remote firmware upgrades for both the main RTU controller body and attached smart sensing devices via network links.
5. What programming environment or configuration tool is utilized for the LT series?
Configuration is executed via specialized embedded software tools designed for parameter mapping, logic adjustments, and oilfield-specific control algorithm tuning.
6. Is external power conditioning required for the 220V AC power supply option?
The unit features an internal wide-tolerance power supply operating at 220 VDC/AC ± 30%, though standard industrial surge protection is recommended for site safety.
7. How are historical production data protected during sudden power outages?
Critical operational parameters and logged historical data are written directly to internal retentive flash memory, ensuring zero data loss during power interruptions.
8. What is the maximum operating altitude for standard deployment?
The hardware operates reliably at altitudes up to 3,000 meters without requiring derating adjustments for standard thermal dissipation thresholds.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
