Designed to integrate seamlessly into distributed control architectures, the Schneider Electric 171CBU98090 provides high-performance processing capabilities for Modicon Momentum I/O systems. This Unity M1E processor module features versatile communication options, including embedded Ethernet, USB, and serial interfaces, making it an efficient choice for modernizing legacy control systems or implementing new industrial automation networks.
Key Features
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Multi-Protocol Connectivity: Equipped with an RJ45 Ethernet port, a mini-B USB port, and a non-isolated RS232/RS485 serial port.
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Unity Pro Compatibility: Fully compatible with Unity Pro and EcoStruxure Control Expert programming environments.
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Compact Footprint: Space-saving design that mounts directly onto Modicon Momentum I/O bases.
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Robust Diagnostics: Front-panel LED indicators provide real-time status of processor run state, errors, and network activity.
Applications
- Distributed control systems (DCS) in water and wastewater treatment facilities.
- Material handling, conveyor systems, and logistics automation.
- Packaging machinery and assembly line control.
- Remote telemetry units (RTUs) for infrastructure and utility monitoring.
Technical Specifications
| Manufacturer |
Schneider Electric |
| Model / SKU |
171CBU98090 |
| Product Range |
Modicon Momentum |
| Processor Type |
Unity M1E Processor |
| Communication Ports |
1 x Ethernet TCP/IP (RJ45), 1 x USB (Mini-B), 1 x RS232/RS485 (RJ45) |
| Memory Capacity |
512 KB (Program/Data) |
| Programming Software |
Unity Pro / EcoStruxure Control Expert |
| Operating Temperature |
0 to 60 degC |
| Storage Temperature |
-40 to 85 degC |
| Relative Humidity |
5% to 95% non-condensing |
| Shipping Weight (Calculated) |
0.24 kg |
| Package Dimensions (Calculated) |
20.7 x 11.0 x 7.5 cm |
Connections and Interfaces
| Port Type |
Connector / Interface |
Supported Protocols |
| Ethernet |
RJ45 (10/100 Base-TX) |
Modbus TCP/IP |
| Serial |
RJ45 (Non-isolated RS232/RS485) |
Modbus RTU / Modbus ASCII |
| Programming |
USB Type Mini-B |
Local Configuration / Programming |
Alternative Models & Compatibility
The 171CBU98090 serves as a direct upgrade path for older Concept-based Modicon Momentum processors (such as the 171CCC96020 or 171CCC98020). It allows users to transition their existing Momentum I/O hardware into the modern Unity Pro / EcoStruxure Control Expert software platform without replacing field wiring or I/O bases.
Application Pitfalls & Engineering Notes
Note that the onboard RS232/RS485 serial port is non-isolated. When connecting to long-distance serial networks or devices located in electrically noisy environments, the use of an external optical isolator is highly recommended to prevent ground loop currents from damaging the processor's communication interface.
Commissioning & Wiring Tips
Before deploying the processor to an active network, configure the IP address parameters using a BootP/DHCP server or directly via the USB programming interface. Ensure that shielded twisted-pair (STP) Cat5e or Cat6 cabling is used for the Ethernet connection, and verify that the shield is properly grounded at the switch end to minimize electromagnetic interference.
Installation Guidelines
CRITICAL WARNING: Disconnect all electrical power sources before mounting, removing, or wiring the processor module. Failure to de-energize the system can result in severe electrical shock, equipment damage, or unintended machine operation.
1
Align the processor module's interface connector with the mating connector on the Modicon Momentum I/O base unit.
2
Press the processor firmly onto the I/O base until the side locking tabs click securely into place.
3
Mount the combined assembly onto a standard 35mm DIN rail, ensuring the grounding clip makes solid contact with the rail.
4
Connect the communication cables (Ethernet, Serial, or USB) to their respective ports, ensuring proper strain relief is applied.
5
Apply system power and verify the boot sequence via the front-panel LED status indicators.