171CBU78090 Schneider Electric Modicon Momentum Processor
The 171CBU78090 is a processor for the Modicon Momentum series from Schneider Electric. It uses the Spear 320s architecture. This unit runs at 333 MHz with a 32-bit word length. Therefore, it handles complex automation tasks with fast cycle times. The processor supports Multidrop Modbus topology. Moreover, it manages up to 32 Modbus devices. It offers 2048 inputs and 2048 outputs. In addition, it provides 26048 register words for data handling. The 171CBU78090 suits obsolete and legacy control systems. As a result, it is a reliable spare part for industrial users.
Technical Specifications
| Brand | Schneider Electric |
| Model | 171CBU78090 |
| Series | Modicon Momentum |
| Product Type | Processor |
| Processor Name | Spear 320s |
| Word Length | 32-bit |
| Clock Frequency | 333 MHz |
| Supply Voltage Limits | 4.75 to 5.25 V |
| Current Consumption | 500 mA at 5 V DC |
| Topology | Multidrop Modbus |
| Number of Devices | 32 Modbus |
| Register Words | 26048 |
| I/O Limit | 2048 inputs / 2048 outputs |
| Exact Time for 1 Kinstruction | 83 ns |
| Mounting | 35 mm symmetrical DIN rail |
| IP Degree | IP20 |
| Shock Resistance | 15 gn, 11 ms |
| Weight | 0.45 kg / 1.00 lbs |
| EAN | 3595864171388 |
Key Performance Data
- Measurement Range: Not specified for this processor model.
- Frequency Response: Not specified for this processor model.
- Sensitivity: Not specified for this processor model.
- Linearity: Not specified for this processor model.
- Resolution: 32-bit word length supports fine data resolution.
- Temperature Range: Not listed in the source data.
- Environmental Tolerance: IP20 rated for indoor use.
- Anti-interference: Shock resistance of 15 gn for 11 ms.
Installation Guide
- Mount the 171CBU78090 on a 35 mm symmetrical DIN rail.
- Use a clean and dry indoor location.
- Keep the IP20 rating in mind. Avoid dust and water exposure.
- Check supply voltage before power-up. Stay within 4.75 to 5.25 V.
- Confirm the current draw. The unit needs 500 mA at 5 V DC.
Commissioning and Maintenance
- Verify all Modbus connections before startup.
- Check register words and I/O limits in the project file.
- Monitor the 333 MHz processor for stable task cycles.
- Keep spare parts for obsolete Momentum systems.
- Test the unit before shipment from Oiltech Controls.
Compatibility Notes
- Works with Modicon Momentum series systems.
- Supports Multidrop Modbus networks.
- Handles up to 32 Modbus devices.
- Fits standard 35 mm symmetrical DIN rail setups.
- Suitable for legacy and obsolete control systems.
Certifications and Compliance
- IP20 degree of protection.
- Shock resistance: 15 gn for 11 ms.
- EAN: 3595864171388.
- Complies with standard industrial hardware requirements.
Packing List
- 1 x 171CBU78090 processor.
- Protective packaging for safe transport.
- Technical verification record before dispatch.
Warranty and Shipping
Oiltech Controls offers a 12-month warranty on this product. We ship by FedEx, UPS, and DHL. Global shipment support is available. We verify technical details before shipment. Contact us for stock and lead time.
Typical Applications
- Legacy Modicon Momentum control cabinets.
- Industrial automation lines with Modbus networks.
- Obsolete control system replacement.
- I/O expansion with up to 2048 inputs and 2048 outputs.
- Data handling with 26048 register words.
Diagnostic Capability
- Fast instruction time of 83 ns per Kinstruction.
- Stable 32-bit processing for complex logic.
- Supports system checks through Modbus topology.
- Helps identify I/O and register limits during setup.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment support for hard-to-find items.
- Tested industrial surplus and refurbished options.
- 12-month warranty for peace of mind.
- Technical verification before shipment.
- Support for obsolete control systems.
FAQ
Q: What is the clock frequency of the 171CBU78090?
A: The processor runs at 333 MHz.
Q: How many Modbus devices can it support?
A: It supports up to 32 Modbus devices.
Q: What is the word length?
A: The word length is 32-bit.
Q: How fast is one Kinstruction?
A: It takes 83 ns for 1 Kinstruction.
Q: What is the mounting type?
A: It mounts on a 35 mm symmetrical DIN rail.
Q: What is the warranty?
A: Oiltech Controls offers a 12-month warranty.
Contact Oiltech Controls
Email: info@oiltechcontrols.com
WhatsApp: +86 158 8020 0923
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
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