Yokogawa ABC11D-V2121 Dual-Redundant Bus Converter The Yokogawa ABC11D-V2121, also cataloged as the ABC11D Dual-Redundant Bus Converter, operates as a dedicated...
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Description
Yokogawa ABC11D-V2121 Dual-Redundant Bus Converter
The Yokogawa ABC11D-V2121, also cataloged as the ABC11D Dual-Redundant Bus Converter, operates as a dedicated hardware component for connecting CENTUM CS1000 RS-485 channels to Ethernet networks within industrial DCS platforms.
Hardware Specifications
Parameter
Specification
Model Brand
Yokogawa ABC11D-V2121
Origin
Japan
Weight
22 kg
Dimensions
200 mm × 150 mm × 50 mm
Operating Temp
-10 to +50 degC
Storage Temp
-20 to +70 degC
Humidity
10 to 90% RH (non-condensing)
Power Supply
24 VDC, 20 W
Input Interface
2 redundant RS-485 channels
Input Data Rate
1 Mbps
Output Interface
Ethernet 100 Mbps
Processor Status Output
30 V DC, 0.3 A max
Mounting
19-inch Rack Mountable
Process Control Connectivity Features
The ABC11D-V2121 includes channel-to-channel isolation to prevent cross-interference between RS-485 lines and Ethernet output. It supports deterministic data flow across the DCS network, maintaining signal integrity for 4-20 mA HART loop and FOUNDATION Fieldbus/Profibus PA interconnections. Cold-junction compensation (CJc) is implemented to ensure stable data transmission under varying ambient temperatures.
Frequently Asked Questions
Q: Does the ABC11D-V2121 support hot-swap replacement? A: The device is not designed for hot-swap replacement; power must be removed prior to module installation or removal.
Q: What is the failover latency between redundant buses? A: Redundant RS-485 channels switch automatically upon fault detection, typically within 10 ms to maintain continuous Ethernet output.
Q: Can firmware be updated in the field? A: Firmware updates require the unit to be powered down and connected to a designated programming interface; live network updates are not supported.
Field Installation Guidelines
Mount the unit in a standard 19-inch rack with adequate clearance for airflow.
Ensure all RS-485 lines are shielded and grounded at a single point to minimize noise coupling.
Route Ethernet cables separately from high-voltage power lines to reduce EMI interference.
Verify 24 VDC power polarity before energizing the module.
Check environmental conditions: operating temperature must be within -10 to +50 degC and humidity below 90% RH non-condensing.
