The HollySys LTp series distributed high-protection I/O modules deliver reliable industrial automation controls through standardized point-to-point communication and intelligent diagnostics. Designed to optimize efficiency and minimize maintenance costs, this hardware lineup ensures real-time data transmission across complex factory environments.
Modern industrial automation demands distributed I/O architectures that minimize wiring complexity while maintaining high signal integrity in harsh plant environments. The HollySys LTp series addresses these challenges through a modular IP67-rated construction, eliminating the requirement for traditional control cabinets in localized machine zones. By integrating support for leading industrial communication protocols such as EtherCAT, Profinet, and EtherNet/IP, these modules facilitate seamless integration into diverse PLC control architectures. The system architecture utilizes robust M12 connections and advanced IO-Link master/slave capabilities, enabling decentralized data collection from sensors and actuators directly at the machine level. This topology significantly reduces copper cabling, simplifies installation workflows, and enhances overall system responsiveness for high-speed manufacturing equipment.
Technical Specifications
Series Name: LT-p series IO @ Standard Operating Conditions
Model Number: LT-p-IO @ Product Family Identification
IP67 IO-Link Master Module EtherCAT Protocol: LT-pCM01 @ EtherCAT bus protocol, 8 IO-Link ports (default 8 Class A, configurable to 8 Class B), max 8DI PNP, max 8DO NPN/PNP configurable, metal housing, CE, FCC, ROHS @ 60 x 225 x 24 mm
IP67 IO-Link Master Module PROFINET Protocol: LT-pCM02 @ Profinet-RT bus protocol, 8 IO-Link ports (default 8 Class A, configurable to 8 Class B), max 8DI PNP, max 8DO NPN/PNP configurable, metal housing, CE, FCC, ROHS @ 60 x 225 x 24 mm
IP67 IO-Link Master Module EtherNET/IP Protocol: LT-pCM03 @ EtherNet/IP bus protocol, 8 IO-Link ports (default 8 Class A, configurable to 8 Class B), max 8DI PNP, max 8DO NPN/PNP configurable, metal housing, CE, FCC, ROHS @ 60 x 225 x 24 mm
IP67 IO-Link Slave Module CLASS A Interface: LT-pDIO01 @ IO-Link slave, CLASS A interface type, COM3 (230.4 kbps) transmission rate, 16 channels, 8 x M12, PNP configurable input/output, metal housing, CE, FCC, ROHS @ 60 x 160 x 22 mm
IP67 IO-Link Slave Module CLASS B Interface: LT-pDIO02 @ IO-Link slave, CLASS B interface type, COM3 (230.4 kbps) transmission rate, 16 channels, 8 x M12, PNP configurable input/output, metal housing, CE, FCC, ROHS @ 60 x 160 x 22 mm
IP67 Bus Coupler Module EtherCAT Protocol: LT-pIM01 @ EtherCAT bus protocol, 24 VDC power supply, max 16 A current, 16 PNP configurable input/output channels grouped by 2, metal housing, CE, FCC, ROHS @ 60 x 225 x 24 mm
IP67 Bus Coupler Module PROFINET Protocol: LT-pIM02 @ Profinet bus protocol, 24 VDC power supply, max 16 A current, 16 PNP configurable input/output channels grouped by 2, metal housing, CE, FCC, ROHS @ 60 x 225 x 24 mm
IP67 Bus Coupler Module EtherNET/IP Protocol: LT-pIM03 @ EtherNet/IP bus protocol, 24 VDC power supply, max 16 A current, 12 PNP configurable input/output channels located in metal housing, CE, FCC, ROHS @ 60 x 225 x 24 mm
System Integration and Hardware Setup
Deploying the LT-p series requires strict adherence to industrial wiring standards to ensure signal fidelity and operational safety. Field technicians must utilize shielded twisted-pair cables for network connections, terminating shields properly at both metallic connector housings to mitigate electromagnetic interference from nearby variable frequency drives. Power distribution relies on a stable 24 VDC source capable of delivering up to 16 A total current across connected modules. The physical installation utilizes M12 industrial circular connectors, which provide secure, vibration-resistant mating for both power feeds and signal lines. Grounding points on the die-cast metal enclosures must be tied directly to the machine frame using low-impedance copper straps to prevent ground loops and protect internal transceiver circuits against electrical transients.
Reliability and Environmental Durability
Engineered for demanding factory environments, the LT-p series features an IP67 protection rating, rendering it completely dust-tight and resistant to temporary water immersion. The rugged metal housing provides excellent mechanical strength and thermal dissipation without requiring external cooling fans. Operating parameters are optimized for standard industrial temperature ranges, while internal galvanic isolation protects sensitive logic circuits from high-voltage spikes and common-mode noise. Comprehensive diagnostic LED indicators offer immediate visual feedback regarding module power status, network communication state, and individual channel short-circuit faults, facilitating rapid troubleshooting and maximizing system uptime.
Selection Guidance and Engineering Deployment
Selecting the appropriate LT-p configuration involves mapping the required field device interface types, power demands, and master controller protocols. For applications utilizing EtherCAT networks, the LT-pCM01 master paired with LT-pIM01 couplers provides deterministic performance. Systems standardized on Profinet or EtherNet/IP should utilize the corresponding LT-pCM02/03 and LT-pIM02/03 variants. Engineers can leverage regional technical resources from Beijing Zhongping Technology to assist with complex cross-reference selections, hardware matching, and inventory replacement support. Integration into the PLC programming environment is accomplished by importing the vendor-supplied GSD or XML configuration files into the engineering software, followed by mapping the cyclic input and output data words to the respective controller tags.
Typical Application Scenarios and Operational Value
The distributed topology of the LT-p series brings substantial efficiency gains to automated manufacturing sectors, including 3C electronics assembly, lithium battery production lines, and high-precision CNC machinery. By mounting the I/O nodes directly onto machine frames close to sensors and actuators, original equipment manufacturers can eliminate extensive wire ducts and reduce total cable length. This decentralized approach minimizes voltage drop across long wire runs, decreases control cabinet footprint requirements, and accelerates on-site mechanical assembly. Furthermore, the built-in diagnostic capabilities and flexible IO-Link port configurations streamline sensor parameterization and reduce mean time to repair during maintenance cycles.
Frequently Asked Questions (FAQ)
1. What are the primary communication protocols supported by the LT-p series remote I/O modules?
The LT-p series supports three major industrial communication protocols: EtherCAT, Profinet, and EtherNet/IP, allowing flexible integration into various programmable logic controller environments.
2. How does the IO-Link master module handle Class A and Class B port configurations?
Each master module features 8 default Class A IO-Link ports that can be individually configured as Class B ports to supply additional auxiliary power for actuators and high-current devices.
3. What is the maximum current rating for the bus coupler power distribution?
The bus coupler modules support a 24 VDC power supply with a maximum total current handling capacity of 16 A across the connected system segments.
4. Are the LT-p series modules suitable for installation outside of control enclosures?
Yes, the modules feature an IP67-rated metal housing designed for machine-mount applications directly on the plant floor without requiring secondary protective enclosures.
5. What type of physical connectors are utilized for signal and power input?
The system utilizes standardized M12 industrial circular connectors to ensure secure, vibration-resistant, and watertight signal and power distribution.
6. How are short-circuit conditions or channel faults diagnosed on the hardware?
Each module incorporates onboard diagnostic LED indicators that provide real-time visual status updates for power rails, network communication health, and individual channel faults.
7. What engineering files are required to configure the modules in a third-party PLC?
Engineers must import the corresponding GSD or XML configuration files specific to the protocol variant (EtherCAT, Profinet, or EtherNet/IP) into the controller programming software.
8. Can IO-Link slave modules be expanded to accommodate additional I/O points?
Yes, the system supports a two-tier extension architecture where slave modules can be connected downstream to expand channel density and save primary master ports.
9. What are the lead times and shipping policies for ordering these units through regional distribution channels?
Order fulfillment timelines depend on active inventory levels and specific regional logistics; Beijing Zhongping Technology maintains local stock reserves to ensure rapid dispatch and reliable delivery schedules.
10. What warranty and technical support terms apply to purchases of the LT-p series hardware?
All supplied hardware components are backed by standard manufacturer warranty coverage, complemented by dedicated engineering support for selection, deployment, and troubleshooting.
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
