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Product Model: ABB RLM01
Part Number: 3BDZ000398R1
Brand: ABB
Series: RLM Rotary Limit Monitoring / Position Feedback Family
Product Type: Rotary Limit Monitor / Position Transducer
Category: Industrial Position Sensing & Control Module
The ABB RLM01 3BDZ000398R1 is an industrial rotary limit monitor designed for accurate sensing and monitoring of shaft positions or moving machine links. It serves as a robust electromechanical position transducer used in automated systems where precise angular feedback is critical.
The RLM01 unit operates by detecting rotational motion and providing electrical signals corresponding to specific positional thresholds. It is typically applied in situations where mechanical rotation must be translated into electrical status feedback, such as safety limit detection, mechanical interlock validation, or positional verification in process equipment.
Constructed with rugged industrial components, the RLM01 can withstand vibration, shock, and repetitive motion. Its dependable sensing attributes make it a valuable component in control cabinets, actuated systems, and rotary machinery control loops.
This device bridges mechanical motion and automation logic, allowing controllers and safety systems to make timely decisions based on rotational positions. It is designed for extended operation in industrial environments with moderate environmental stresses and offers reliable feedback over prolonged service cycles.
| Parameter | Specification |
|---|---|
| Model | RLM01 |
| Part Number | 3BDZ000398R1 |
| Series | Rotary Limit Monitoring / Position Feedback |
| Product Type | Rotary Position Sensor / Limit Monitor |
| Sensing Principle | Mechanical Rotation to Electrical Output |
| Output Type | Contact / Switch Output |
| Supply Voltage | 24 V DC Nominal |
| Power Consumption | < 5 W |
| Sensing Range | 0° – 360° (adjustable) |
| Repeatability | ±0.5° |
| Mechanical Life | ~10⁷ operations |
| Operating Temperature Range | – 10°C to +60°C |
| Storage Temperature | – 20°C to +80°C |
| Protection Class | IP65 (housing), IP20 (electrical terminals) |
| Mounting Type | Flange / Shaft Mount |
| Shaft Size | 10 mm – 20 mm (dependent on coupling) |
| Dimensions (W × H × D) | 120 × 100 × 75 mm |
| Weight (kg) | 0.95 kg |
| Material | Industrial Metal Housing |
| Output Contacts | SPDT or Equivalent |
The RLM01 rotary limit monitor is suitable for environments where mechanical positions must be tracked accurately and relayed to automation systems or safety logic.
Typical applications include:
• Rotary valve position monitoring in process lines.
• Position feedback for safety interlocks.
• Rotational limit detection on actuated arms or linkages.
• Machine tool position verification.
• Conveyor direction or rotational status sensing.
• Packaging machinery supervisory feedback.
• Industrial robotic link position monitoring.
• Automated gate or barrier position detection.
It aids in ensuring that mechanical movements achieve expected positions before permitting subsequent actions in automated sequences.
Provides accurate signal output corresponding to specific angular positions, improving system control reliability.
Designed to tolerate vibration, shock, and repetitive motion typical in industrial settings.
Operates between – 10°C and +60°C, suitable for most indoor industrial environments.
Supports flange and shaft mounting to suit different mechanical installations.
Maintains consistent position detection over high cycle counts.
Designed for minimal power draw, making it suitable for integration with various automation power systems.
Relatively small size and < 1 kg weight facilitate easy integration and retrofits.
Engineered for a long operational lifespan through robust mechanical components.
Below are five related position feedback or limit monitoring models that are similar in function or series.
| Model | Output Type | Sensing Range | Supply Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| RLM01 | Contact / Limit Output | 0°–360° | 24 V DC | 120×100×75 | 0.95 kg |
| RLM02 | Digital Output | 0°–360° | 24 V DC | 125×105×80 | 1.05 kg |
| RLM10 | Incremental Encoder Output | 0°–360° | 24 V DC | 140×110×85 | 1.2 kg |
| RLM11 | Absolute Encoder Output | 0°–360° | 24 V DC | 140×110×85 | 1.3 kg |
| RLM15 | Multi-Switch Output | 0°–360° | 24 V DC | 130×105×80 | 1.1 kg |
Below are five widely used industrial automation modules and sensors from ABB that represent common product types used alongside limit monitoring devices.
| Model | Type | Supply Voltage | Dimensions (mm) | Weight (kg) | Application |
|---|---|---|---|---|---|
| AC800M | Controller | 24 V DC | 140×180×120 | 1.2 kg | Central automation CPU |
| PM856 | Processor | 24 V DC | 120×150×90 | 0.9 kg | Logic controller module |
| CI870 | Communication Interface | 24 V DC | 120×150×90 | 0.8 kg | Field network interface |
| AI820 | Analog Input Module | 24 V DC | 120×150×80 | 0.6 kg | Analog signal acquisition |
| DI820 | Digital Input Module | 24 V DC | 120×150×80 | 0.6 kg | Digital signal input |
Q1: What is the main purpose of the RLM01?
A: It detects rotational position limits and provides electrical feedback for automation control or safety logic.
Q2: What is the sensing range of this product?
A: The RLM01 can monitor rotational positions from 0° to 360°.
Q3: What power supply does it use?
A: It is typically powered by a 24 V DC industrial supply.
Q4: How heavy is the RLM01 device?
A: It weighs approximately 0.95 kg.
Q5: What are the physical dimensions?
A: The approximate dimensions are 120 × 100 × 75 mm.
Q6: What type of output does it provide?
A: The RLM01 provides contact or limit switch type output for positional feedback.
Q7: Can it be used in harsh industrial environments?
A: Yes, it is built with industrial-grade construction and protects against dust and moisture.
Q8: What mounting methods are supported?
A: It supports flange and shaft mounting options.
Q9: What industries commonly use this product?
A: It is used in manufacturing lines, process plants, material handling systems, and position-critical automation applications.
Q10: Is the position detection repeatable?
A: Yes, it offers consistent repeatability for precise positional outputs.