ABB LDMUI-01 61320946 High Performance LD MU I/O Module

ABB LDMUI-01 61320946 High Performance LD MU I/O Module

Product Overview

The ABB LDMUI-01 (order number 61320946) high-performance LD MU I/O module is a core signal processing unit launched by ABB in the field of industrial automation control. It belongs to the LD series modular product system and is mainly used to achieve signal acquisition, conversion, and transmission between various sensors, actuators, and control systems (such as PLC, DCS) in industrial sites. This module, with its precise signal processing capability, stable operating performance, and flexible expansion characteristics, can adapt to the diverse signal requirements in complex industrial scenarios. It is widely used in automation control systems in industries such as power, metallurgy, chemical, and intelligent manufacturing, providing key signal interaction guarantees for precise control and efficient operation of the system.

As a "bridge" connecting field devices and upper level control systems, the LDMUI-01 I/O module has the comprehensive processing capability of analog and digital signals. It can convert analog signals such as temperature, pressure, and flow in the field with high precision, and reliably collect and output digital signals such as device switch status. It effectively solves the problems of complex signal types and large transmission interference in industrial fields, and improves the response speed and control accuracy of the control system.

Core Features

1. Compatible with multiple types of signals and highly adaptable

This module adopts a modular signal processing architecture, supporting multiple analog inputs (such as 4-20mA, 0-10V and other standard signals), analog outputs, and digital input/output signal types, and can flexibly configure signal channels according to actual on-site needs. Whether it is temperature sensor signals such as thermocouples and thermal resistors, or standard signals from pressure transmitters and flow sensors, accurate acquisition and processing can be achieved without the need for additional dedicated conversion modules, greatly improving the adaptability to different field devices.

2. High precision signal processing, high data reliability

The module is equipped with a high-precision signal acquisition chip and anti-interference processing circuit, with an analog signal acquisition accuracy of up to 0.1 level, which can effectively capture small changes in on-site signals and ensure the accuracy of data transmission. At the same time, in response to the common electromagnetic interference problems in industrial sites, the module adopts multiple anti-interference technologies such as differential input and optoelectronic isolation. The isolation voltage can reach 2500V AC, effectively suppressing the influence of external interference on signal transmission and ensuring the stability and reliability of data in complex electromagnetic environments.

3. Flexible modular design, easy to expand

Following the ABB LD series standardized module design specifications, the LDMUI-01 I/O module adopts a compact structure, supports rail mounted installation, and can be flexibly combined with other functional modules in the same series (such as power modules and communication modules) to form a complete signal processing unit. The module supports hot swappable functionality, allowing for installation and replacement of modules without shutting down the system, greatly improving the convenience of equipment maintenance and reducing production downtime caused by module replacement.

4. Powerful self diagnosis and fault tolerance capabilities

The module has a complete self diagnostic function, which can monitor the power status, channel signal abnormalities (such as disconnection, overtravel, etc.), and internal circuit faults of the module in real time. The fault information is fed back to the upper control system through the status indicator light or communication interface, making it easy for operators to quickly locate the fault point and reduce maintenance difficulty. At the same time, the module has a built-in fault tolerance mechanism, which ensures that when a channel fails, it will not affect the normal operation of other channels, thus guaranteeing the overall stability of the system operation.

5. Wide temperature and pressure operation, excellent environmental adaptability

In response to the complex operating environment of industrial sites, the module has been designed with a wide range of working voltage and temperature. The working voltage supports 24V DC ± 20% fluctuation, and the working temperature can cover -20 ℃ to+60 ℃. It can adapt to extreme working conditions such as high temperature, low temperature, and unstable voltage. In addition, the module has good dust and moisture resistance, with a protection level of up to IP20, meeting the installation and use requirements inside industrial control cabinets.

6. Standardized communication protocols for convenient integration

The module supports mainstream industrial communication protocols such as PROFINET and Modbus, enabling seamless integration with ABB AC500 series PLCs, third-party control systems, and human-machine interfaces (HMI) without the need for complex protocol conversion configurations. The communication interface adopts high-speed transmission technology to ensure real-time transmission of signal data and meet the strict requirements of industrial automation systems for real-time performance.

Key technical parameters

Model/Order Number

LDMUI-01 / 61320946

Module Type

High performance hybrid I/O module (analog+digital)

Analog input (AI)

8 channels, supporting 4-20mA, 0-10V, thermocouple (K/J/T, etc.), thermistor (Pt100/Pt1000)

Analog Output (AO)

4-channel, supports 4-20mA, 0-10V, output accuracy ± 0.1%

Digital Input (DI)

8 channels, optional PNP/NPN, response time ≤ 1ms

Digital Output (DO)

4-channel, relay output/transistor output optional, rated current 2A/channel

Collection accuracy

Analog input ± 0.1% FS, analog output ± 0.1% FS

Isolation level

Optoelectronic isolation between channels and between channels and power supply, with an isolation voltage of 2500V AC (1 minute)

working power supply

24V DC ± 20%, power consumption ≤ 15W

Working temperature range

-20℃ ~ +60℃

Storage temperature range

-40℃ ~ +85℃

communication protocol

PROFINET V2.3、Modbus RTU/TCP

Installation method

35mm DIN rail installation

Protection level

IP20 (installed inside the control cabinet)

Dimensions (W × H × D)

45mm × 120mm × 110mm (approximately)

Installation and usage precautions

-Module selection confirmation: Before installation, it is necessary to confirm that the module model and order number are consistent with the actual requirements based on the on-site signal type (analog/digital, signal range) and channel quantity requirements. At the same time, check that the module appearance is not damaged, the interface is not deformed, and the accessories (such as wiring terminals and fasteners) are complete.

-Installation environment requirements: The module should be installed in a control cabinet with good ventilation, no direct sunlight, no corrosive gases or dust, and should not be installed in areas with severe vibration or near high-temperature heat sources; During installation, it is necessary to reserve at least 5mm of heat dissipation space on both sides of the module to ensure good heat dissipation.

-Wiring specification operation: Before wiring, the module power supply must be disconnected, and the power terminals and signal input/output terminals should be distinguished according to the module wiring diagram to ensure correct wiring; The wiring of analog signals should use shielded twisted pair cables, with the shielding layer grounded at one end to reduce signal interference; The wiring terminals need to be tightened to avoid signal abnormalities or module failures caused by poor contact.

-Power configuration requirements: The module needs to use a 24V DC power supply that meets the specifications, and a fuse (recommended 2A) should be installed in the power circuit to prevent damage to the module due to power overcurrent; When multiple modules are used in parallel, it is necessary to ensure that the power capacity meets the total power consumption requirements and avoid voltage fluctuations that affect module operation.

-Communication parameter configuration: According to the communication protocol adopted by the control system, configure the communication parameters of the module (such as IP address, slave address, baud rate, etc.) through ABB dedicated configuration software (such as Control Builder Plus) to ensure normal communication between the module and the control system; After the configuration is completed, communication testing is required to verify the accuracy of data transmission.

-Debugging and Calibration: After the module installation and wiring are completed, signal calibration is required. The analog input channel is calibrated using a standard signal source to ensure that the acquisition accuracy meets the requirements; Simultaneously test the digital input/output channels to verify the reliability of signal response; During the debugging process, it is necessary to record the calibration data of the module for later maintenance.

-Maintenance and Inspection: Regularly inspect modules and check if the module status indicator lights (power, communication, channel faults) are functioning properly; Clean the dust on the surface of the module and the wiring terminals, and check if the wiring is loose; By monitoring the signal acquisition and output data of the control system monitoring module, if any abnormal data is found, it is necessary to promptly troubleshoot (such as sensor faults, wiring problems, or module failures).