171CBU98091
171CBU98091

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Schneider Electric

Schneider Electric 171CBU98091 PLC Controller

SKU: 171CBU98091
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$1,751.93
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171CBU98091 Unity M1E Processor | Schneider Modicon Momentum PLC

The Schneider 171CBU98091 is Unity M1E PLC processor for Modicon Momentum platform, equipped with Spear 320s 333MHz 32-bit CPU, built-in Ethernet, USB mini-B, configurable RS232/RS485 serial port and Global Data peer-to-peer communication. It uses supercapacitor for data retention, no battery required, supports Transparent Ready Class B and embedded web server for diagnostics. Technical data sourced from Schneider Electric official user guide HRB44124. Supplied by SHLY-PLC, an independent industrial automation distributor; each unit undergoes visual inspection and functional testing before shipment for legacy system upgrade and spare replacement projects. Contact our team for compatibility verification.

Features

  • Order Code: 171CBU98091
  • Model: Unity M1E Processor for Modicon Momentum
  • CPU: Spear 320s, 333 MHz, 32-bit architecture
  • Program Memory: 3584 kB (IEC / LL984)
  • Register Words: 26048 register words
  • Retention Memory: 128 kB, supercap backup, no battery, 72h retention
  • Max I/O Capacity: 2048 inputs / 2048 outputs
  • Built-in Ports: 1×10/100Mbps RJ45 Ethernet; 1×USB mini-B; 1×RJ45 RS232/RS485 serial
  • Core Function: Global Data peer communication, Transparent Ready Class B, embedded web server, Modbus TCP I/O Scanner, up to 32 Ethernet slave devices
  • RTC Clock: Real-time clock, 16 mins/year accuracy when powered
  • LED Indicators: RUN, ERR, I/O, CH0, ETH LINK, ETH 100, ETH STS
  • Mounting: 35mm symmetrical DIN rail, fits Momentum I/O base
  • Dimensions & Weight: W144 × H60.6 × D53.47 mm; 163g
  • Protection Class: IP20 (cabinet installation)
  • Lifecycle: Discontinued, available as aftermarket spare parts
  • Application: Distributed factory automation, Modbus TCP/RTU network, peer PLC data exchange, legacy Momentum system maintenance

Specifications

Technical parameters compiled from Schneider Electric HRB44124 user manual.

Technical Specifications
Catalog Number 171CBU98091
Product Type Unity M1E Momentum PLC Processor
CPU Spear 320s, 333MHz, 32-bit
Program Memory 3584 kB (IEC / LL984)
Retention Memory 128 kB, Supercap backup, 72 hours retention, no battery
Max I/O Points 2048 Inputs / 2048 Outputs
Backplane Power Supply 4.75~5.25V DC, Max 500mA consumption
Communication Interfaces 10/100Mbps Modbus TCP Ethernet; Mini-B USB; Configurable RS232/RS485 Modbus serial
Dielectric Withstand Voltage 1500 Vrms between logic common and ground
Dimensions (W×H×D) 144 mm × 60.6 mm × 53.47 mm
Net Weight 163 g
Environmental & Certifications
Operating Temperature 0 °C to +60 °C
Storage Temperature -20 °C ~ +70 °C
Relative Humidity 5% ~ 95% RH, non-condensing
Certifications UL 508, CSA C22.2 No.142, CE

Compatibility & Cross-References

The 171CBU98091 belongs to Schneider Modicon Momentum Unity processor family. Related models: 171CBU98090 (M1E without Global Data), 171CBU78090 (M1, no Ethernet). It mounts onto Momentum I/O base modules and supports Modicon STB distributed I/O. Programming software: EcoStruxure Control Expert (Unity Pro). This listing is provided by an independent industrial-automation distributor; brand names and part numbers are used for product identification only.

Applications

  • Distributed I/O control for Modicon Momentum automation system
  • Modbus TCP / Modbus RTU industrial network control
  • Global Data peer-to-peer data exchange between multiple PLCs
  • Legacy Momentum platform maintenance, spare parts replacement and system retrofit

Warranty

  • Availability: 171CBU98091 discontinued OEM production, supply as aftermarket spare; contact us for real-time stock status.
  • Inspection & testing: each unit is visually inspected and functionally checked before packing.
  • Delivery: orders are processed within 2-4 business days after payment confirmation; standard worldwide delivery is about 5-8 business days, express shipping available, orders over $500 ship free.

Warranty: 12-month seller warranty provided by SHLY-PLC. See our Return Policy for coverage and claims.

Independent supplier: Schneider part 171CBU98091 is supplied by SHLY-PLC, an independent industrial-automation distributor. Brand names and part numbers are used for product identification and remain the property of their respective owners; this listing is not affiliated with, sponsored or endorsed by the manufacturer.

Frequently Asked Questions

Q: What is 171CBU98091?

A: 171CBU98091 is Schneider Modicon Momentum Unity M1E PLC processor with Spear320s 333MHz CPU, Ethernet, USB, RS232/485 serial and Global Data function, supercap data retention for distributed industrial control systems.

Q: What software programs this CPU?

A: EcoStruxure Control Expert (formerly Unity Pro) is required for programming, configuration and project download.

Q: What is the difference between 171CBU98090 and 171CBU98091?

A: Both M1E CPU with Ethernet. 171CBU98091 supports Global Data peer-to-peer Ethernet communication; 171CBU98090 does NOT include Global Data feature.

Q: Does this CPU need backup battery?

A: No battery required, it uses embedded supercapacitor to retain memory for up to 72 hours after power loss.

171CBU98091 · Technical reference data · Independently supplied by SHLY-PLC

Standard International (tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders of $500 or less; free on orders over $500.

Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.

Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Remote-area and overweight surcharges, where applicable, are shown before checkout.

Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use. Manufacturer or factory warranty service is not applicable, and extended warranty packages are not provided.

This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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