Product Details
Configured for central processing and protocol execution in ABB control systems, the ABB CMA 122 (3DDE 300 402) (CMA 122 CPU Card) provides direct physical/electrical execution. This hardware unit manages core system logic, executing real-time mathematical operations and coordinating peripheral communication links. Operating on a 24 VDC nominal power interface, the component maintains execution cycle determinism while interfacing directly via integrated physical layers to process Modbus and Ethernet field data packets.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CMA 122 (3DDE 300 402) |
| Brand | ABB |
| Origin | Sweden |
| Weight | 0.35 kg |
| Dimensions | 120 mm x 80 mm |
| Operating Temp | -40 to 85 deg C |
| Power Consumption | 24 VDC |
| Communication Protocols | Ethernet, Modbus |
| System Compatibility | ABB Synpol Control Systems |
Backplane Bus Communication and Firmware Flash Compatibility
The ABB CMA 122 incorporates local non-volatile flash memory to handle firmware flash compatibility, preventing operational degradation during firmware updates. The embedded processing core interfaces with the main backplane bus to optimize data synchronization velocities and support seamless I/O density scaling across complex multi-node automation topologies. This architecture ensures deterministic network communication and maintains strict alignment with standard industrial automation protocols under high-throughput processing loads.
Frequently Asked Questions
Q: Does the CMA 122 support live hot-swap installation during active system runtime?
A: No, hot-swapping this CPU card is prohibited. The backplane power supply must be completely isolated prior to insertion or extraction to prevent voltage transients from damaging the logic gates.
Q: What are the communication interface requirements for downloading user application logic?
A: Application logic downloads and runtime monitoring are achieved via the dedicated onboard Ethernet port or via Modbus protocol structures, utilizing compatible engineering tools.
Q: How is the non-volatile memory managed during power-loss events?
A: The card retains critical operational parameters and system firmware within integrated non-volatile storage blocks, eliminating the dependency on external battery backup solutions during extended power outages.
Field Installation Guidelines
To guarantee functional reliability and compliance with EMC requirements, all field wiring for the Ethernet and Modbus links must utilize shielded twisted-pair cables. Grounding brackets must establish low-impedance contact between the cable shields and the functional earth rail. The module must be securely locked into its designated backplane slot to prevent intermittent communication disruptions caused by mechanical vibration. Ensure adequate vertical airflow spacing within the enclosure to maintain standard heat dissipation profiles over the full operational temperature envelope.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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