EN
- Overview
- Specifications
- Description
- Applications
- Test Procedure
- Competitive Advantage
- FAQ
- Recommended Products
Overview
Place of Origin: |
Sweden |
Brand Name: |
ABB |
Model Number: |
CMA126 |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
5-7 days |
Payment Terms: |
T/T |
Supply Ability: |
In stock |
Specifications
|
Parameter |
Product Details |
|
Model |
CMA126 |
|
Device Type |
Interface Card |
|
System |
ABB AC 800M PAC platform, integrated in System 800xA |
|
Net Dimensions |
10 x 17.7 x 1.5 cm |
|
Net Weight |
0.12 kg |
|
Communication Protocol |
PROFIBUS DP (IEC 61158/61784), supports DP-V0 and DP-V1 |
|
Port Configuration |
Dual isolated RS-485 ports (9-pin D-sub), each configurable as master or slave |
|
Data Rate |
10/100 Mbps, auto-negotiation or manual |
|
Isolation Voltage |
500 V AC between channels and to backplane |
|
Operating Temperature |
0 °C to +70 °C |
|
Mounting |
Standard DIN rail on TB511/TB521 I/O bases, hot-swappable with redundant CPU |
|
Power Consumption |
≤ 2.5 W @ 24 V DC |
|
Diagnostics |
Independent LED indicators per port (RUN, ERR, ACT), detailed fault codes via Control Builder M |
|
Certifications |
CE, UL, cULus, EMC 2014/30/EU compliant, industrial safety standards |
Description
The CMA126 is a dual-channel PROFIBUS DP communication module designed by ABB for high-availability process control systems. It is specifically designed for critical applications requiring network redundancy or device-level segmented management. It mitigates the risk of entire production line downtime due to a single point of communication failure and enables flexible topologies through independent configuration of its two ports—such as one port connecting to the drive network and the other to a remote I/O station. Its hardware-level redundancy switching mechanism requires no upper-level software intervention, completing fault port isolation and backup path activation within milliseconds, significantly improving system continuity.
Applications
Automation Equipment Factory: Enables synchronous network control of multiple drives (up to 16 supported).
Power Plant/Substation: Integrates into power distribution automation systems for power parameter monitoring.
Communication Base Station Factory: Used for data exchange in power systems within telecommunications infrastructure.
Rail Transit Factory: Provides stable communication support in railway and public transportation control systems.
Oil/Petrochemical Plant: Meets the needs of remote drive management in harsh environments.
Test Procedure
Appearance and Physical Interface Inspection: Use an industrial magnifying glass to inspect the D-sub pins for oxidation and deformation, and check the PCB for moisture or mechanical stress damage.
Dual-Port Independent Function Verification: Configure ports A and B as master/slave respectively, connect to analog PROFIBUS devices (such as ET 200M, ACS880), and verify data exchange integrity.
Redundancy Switching Stress Test: Actively disconnect the power or signal line of the master port to verify that the backup port takes over communication within ≤200ms without control interruption.
Long-Term Aging Operation: Run continuously for 72 hours in a 45°C constant temperature chamber, monitoring current fluctuations, temperature rise, and communication stability.
Protocol Consistency Test: Use a PROFIBUS analyzer to capture packets and confirm the absence of illegal frames, address conflicts, or timeout retransmission anomalies.
Competitive Advantage
FAQ
Q: What is the CMA126 3DDE300406?
A: It is an Interface Card.
Q: How many drives can the CMA126 3DDE300406 connect simultaneously?
A: The CMA126 3DDE300406 supports controlling up to 16 drives simultaneously.
Q: Can the CMA126 3DDE300406 be used if only an Ethernet interface is available in the field?
A: Yes. It has a built-in 10/100 Mbps Ethernet port and supports TCP/IP networking.
Q: Can the CMA126 3DDE300406 store configuration parameters?
A: Yes. It has independent storage space and retains critical communication configurations after a system power failure.
Q: Will the CMA126 3DDE300406 crash if the ambient temperature reaches 65°C during operation?
A: No. Its industrial-grade design supports operating environments up to 70°C.
Q: What is the main purpose of the USB interface on the CMA126 3DDE300406?
A: It is typically used to connect to a PC for local parameter debugging, firmware upgrades, or system diagnostics.
