Motorola FRN1420A CPU Module | Replacement, Equivalent & Selection Guide
The Motorola FRN1420A is a central processing unit (CPU) module designed for the Motorola MOSCAD (Motorola Optimized SCADA) platform — a ruggedized, field-proven RTU/PLC system widely deployed in utilities, oil & gas pipelines, water treatment, and transportation infrastructure. As a core compute element, the FRN1420A governs all logic execution, I/O scanning, communication scheduling, and SCADA protocol handling within the MOSCAD rack.
Konmask.com specializes in sourcing verified, shelf-ready MOSCAD components for MRO replacement, system expansion, and lifecycle extension projects. Every FRN1420A unit is inspected, tested, and traceable to documented supply chains.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | FRN1420A |
| Module Type | CPU / Processor Module |
| Platform | Motorola MOSCAD RTU/PLC |
| Manufacturer | Motorola Solutions (formerly Motorola Inc.) |
| Form Factor | Rack-mount card, MOSCAD backplane compatible |
| Communication Interfaces | Serial (RS-232/RS-485), proprietary MOSCAD bus |
| Operating Temperature | -40°C to +70°C (industrial grade) |
| Power Supply | Supplied via MOSCAD backplane (DC bus) |
| Weight | Approx. 2.0 kg (packaged) |
| Condition Available | Refurbished / Tested / New Old Stock |
Note: Full datasheet available upon request. Contact [email protected] for detailed electrical specifications.
Compatible Replacement & Equivalent Models
When the FRN1420A is unavailable or end-of-life, the following models may serve as functional equivalents or drop-in replacements depending on firmware revision and backplane generation:
| Model | Brand | Compatibility Notes |
|---|---|---|
| FRN1420B | Motorola | Revised hardware revision; firmware update may be required |
| FRN1421A | Motorola | Enhanced CPU variant; backward compatible in most MOSCAD racks |
| FRN1410A | Motorola | Earlier generation; reduced memory capacity |
| MOSCAD-M CPU Card | Motorola Solutions | Next-gen platform; requires rack and software migration |
Important: Always verify backplane revision, firmware version, and I/O configuration before substituting CPU modules. Konmask engineers can assist with compatibility verification — contact us before ordering.
Why Choose the Original FRN1420A
- Proven field reliability — deployed in thousands of SCADA sites across utilities and pipelines globally
- Exact firmware compatibility — no re-programming or logic migration required when replacing like-for-like
- Backplane pin-compatibility — direct hot-swap replacement in existing MOSCAD racks
- Reduced commissioning risk — eliminates integration testing overhead associated with cross-model substitution
- Regulatory traceability — original part number maintained for asset management and compliance records
Typical Applications
- Electric utility substation automation and SCADA telemetry
- Oil & gas pipeline monitoring and remote terminal units (RTU)
- Water and wastewater treatment plant control systems
- Transportation infrastructure (traffic, rail signaling)
- Industrial process control requiring ruggedized field PLCs
System Compatibility
The FRN1420A is designed for integration within the Motorola MOSCAD product family. Confirmed compatible environments include:
- MOSCAD standard rack (full-size and compact chassis)
- MOSCAD-L (Lite) systems — verify backplane revision
- Motorola MOSCAD Toolbox software (programming and diagnostics)
- DNP3, Modbus RTU, and proprietary Motorola SCADA protocols
- Third-party SCADA masters via serial gateway configurations
Selection Guide
Use the following criteria to confirm the FRN1420A is the correct module for your application:
| Selection Criterion | Requirement |
|---|---|
| Existing platform | Motorola MOSCAD (standard rack) |
| CPU slot designation | Slot 0 or designated CPU slot per rack layout |
| Firmware version | Confirm with existing system documentation |
| I/O module count | Verify CPU scan rate supports total I/O point count |
| Communication requirement | Serial-based SCADA (DNP3 / Modbus RTU) |
| Operating environment | Industrial outdoor / substation (–40°C to +70°C) |
Not sure which CPU module fits your rack? Send your system BOM or rack layout to [email protected] and our engineers will confirm compatibility within 24 hours.
Quality Assurance & Sourcing
- Source verification — all units sourced from documented industrial decommissions, authorized distributors, or OEM surplus channels
- Functional testing — power-on, communication bus, and I/O interface tests performed prior to shipment
- Anti-counterfeit inspection — PCB markings, component dates, and label authenticity verified
- Packaging — ESD-safe bags, foam-lined cartons, and humidity indicators for international shipping
- Warranty — 90-day replacement warranty on all tested units
How to Order
- Confirm part number: FRN1420A and required quantity
- Submit RFQ via email: [email protected]
- Receive quote with lead time, condition report, and test certificate within 24 hours
- Approve proforma invoice and arrange payment (T/T, PayPal, or trade terms)
- Shipment dispatched with tracking, packing list, and quality documentation
Bulk orders and long-term supply agreements available. Contact us for volume pricing.
Replacement & Compatibility FAQ
Q: Can the FRN1420A replace an FRN1410A directly?
A: The FRN1410A is an earlier-generation CPU with reduced memory. The FRN1420A is generally backward compatible but may require firmware re-flashing. Confirm with your MOSCAD Toolbox version.
Q: Is the FRN1420A still in production?
A: Motorola MOSCAD hardware is considered legacy/end-of-life. Konmask maintains MRO stock sourced from verified surplus and decommissioned systems.
Q: Can I use an FRN1421A as a drop-in replacement?
A: In most MOSCAD racks, yes — but verify the backplane revision and confirm firmware compatibility with Motorola Toolbox before installation.
Q: Do you provide a test report with the unit?
A: Yes. All tested units ship with a functional test certificate. Full factory test data is available for new old stock (NOS) units where documentation exists.
Q: What is the lead time?
A: In-stock units ship within 3–5 business days. For sourced units, typical lead time is 2–4 weeks. Expedited sourcing available upon request.
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