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- ABB
- PM554-T 1TNE968900R0100
- CPU Processor Unit
- Sweden (SE)
- 74 × 135 × 82 mm
- 0.281 kg
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The ABB PM554-T (1TNE968900R0100) is a compact CPU Processor Unit designed for the ABB AC500-eCo PLC platform. It integrates processing, communication, and onboard I/O handling into a single controller, making it suitable for small to medium industrial automation systems.
It is widely used in machine control, building automation, and distributed control applications where reliable real-time operation and compact design are required.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | ABB |
| Model | PM554-T |
| Part Number | 1TNE968900R0100 |
| Product Type | CPU Processor Unit |
| System Compatibility | ABB AC500-eCo PLC |
| Function | PLC CPU for automation and control |
| Program Memory | 128 kB |
| Data Memory | 64 kB |
| Digital Inputs | 8 × 24 V DC |
| Digital Outputs | 6 × transistor outputs |
| Communication | RS485 (Modbus RTU / ASCII support) |
| Expansion Capability | Supports AC500-eCo expansion modules |
| Power Supply | 24 V DC |
| Programming Standard | IEC 61131-3 |
| Diagnostics | LED status indicators |
| Installation Type | DIN rail mounting |
| Dimensions | 74 × 135 × 82 mm |
| Weight | 0.281 kg |
Function and Working Principle
The PM554-T operates as the central controller of an AC500-eCo PLC system.
Its main functions include:
- Executing PLC user programs in real time
- Processing digital input signals from field devices
- Controlling digital outputs for actuators and relays
- Managing internal logic for machine and process automation
- Handling communication via RS485 (e.g., Modbus RTU)
- Coordinating expansion I/O modules
- Performing continuous system diagnostics
The controller works in a cyclic scan process:
Input scanning → Program execution → Output update → Communication exchange
Role in Industrial Control Systems
Within ABB AC500-eCo systems, the PM554-T functions as:
- The primary CPU for small automation systems
- A controller for machine-level sequencing and logic execution
- A communication node for industrial field networks
- A central unit for I/O processing and control coordination
- A diagnostic unit for system health monitoring
Industrial Applications
The PM554-T is widely used in:
- Packaging machines
- Conveyor systems
- HVAC and building automation
- Water and wastewater treatment systems
- Food and beverage production lines
- Material handling equipment
- General industrial machinery
- OEM machine control systems
Installation and System Integration
- Mount on DIN rail inside a control cabinet
- Connect 24 V DC power supply
- Wire sensors and actuators to onboard I/O terminals
- Configure logic using ABB AC500 engineering software
- Integrate RS485 communication for Modbus RTU systems
- Add expansion modules if additional I/O is required
Compatible System Components
- ABB AC500-eCo digital I/O modules
- ABB AC500 communication modules
- HMI operator panels
- Industrial sensors and actuators
- Modbus RTU devices
- Relay and contactor systems
Recommended Alternative Models
| Model | Product Type | Key Feature | Application |
|---|---|---|---|
| PM554-T | CPU Processor Unit | Compact PLC with onboard I/O | Small automation systems |
| PM554-RP | CPU Processor Unit | DC-powered variant | Flexible industrial control |
| PM554-RP-AC | CPU Processor Unit | AC-powered version | Cabinet-based automation |
| PM564-T | CPU Processor Unit | Higher performance PLC CPU | Medium complexity systems |
Key Advantages
- Compact all-in-one PLC design
- Integrated I/O reduces external wiring
- Reliable real-time control performance
- RS485 communication for industrial networking
- Easy DIN rail installation
- Supports IEC 61131-3 programming
- Expandable system architecture
- Suitable for continuous industrial operation
Technical FAQs
Q1: What is the main function of the PM554-T?
It is a PLC CPU that executes control programs and manages I/O for industrial automation systems.
Q2: What communication does it support?
It supports RS485 communication, commonly used for Modbus RTU.
Q3: Does it include onboard I/O?
Yes, it typically includes 8 digital inputs and 6 digital outputs.
Q4: What is its power supply requirement?
It operates on 24 V DC power supply.
Conclusion
The ABB PM554-T (1TNE968900R0100) is a compact and efficient CPU processor unit for the AC500-eCo PLC platform. With integrated I/O, reliable real-time processing, and flexible communication capabilities, it is well suited for machine automation, building systems, and general industrial control applications.