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YOKOGAWA · CENTUM ANALOG I/O
Yokogawa AAB841 8-Input 8-Output Analog I/O Module
A combined 8-input / 8-output analog module for coordinated measurement and control in Yokogawa CENTUM systems.
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CONTROL ROLE
Combined voltage input and current output
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COMBINED ANALOG ACQUISITION AND CONTROL
Eight voltage inputs and eight current outputs in one module
The AAB841 combines 1–5 V DC measurement and 4–20 mA actuation channels for CENTUM process I/O applications.
Official technical data
| Product type |
Analog I/O module |
Input channels |
8 |
| Input signal |
1–5 V DC |
Output channels |
8 |
| Output signal |
4–20 mA DC |
Channel isolation |
Non-isolated |
| Input update period |
10 ms |
Input step response |
100 ms (10–90%) |
| Input accuracy |
±4 mV |
System family |
CENTUM field I/O |
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Safety & Compliance
Remove field power before connecting or replacing the module. Because the signal channels are non-isolated, verify common-potential limits, grounding and terminal-board wiring against the installed CENTUM documentation.
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Performance & Efficiency
Combining eight inputs and eight outputs reduces module count for coordinated analog loops. A 10 ms input update period and defined step response support stable process measurement and control.
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Brand characteristics
Yokogawa CENTUM I/O products emphasize modular field interfaces, documented signal ranges and lifecycle consistency for continuous process automation.
| Process platform |
FIO modules integrate with structured CENTUM node architecture. |
| Defined signals |
Catalog-coded ranges simplify loop engineering and checking. |
| Maintenance clarity |
Module identities support controlled spare-part replacement. |
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Application fields
AAB841 serves process units that require both voltage measurement and current-loop commands in a single CENTUM I/O position.
| Process plants |
Analog acquisition and actuation for continuous processes. |
| Utility systems |
Monitoring and control of shared plant services. |
| System upgrades |
Compatible I/O replacement in documented CENTUM nodes. |
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01 · IDENTIFY
Provide AAB841 suffix, installed CENTUM node, terminal hardware and quantity.
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02 · VERIFY
Confirm 1–5 V inputs, 4–20 mA outputs, non-isolated wiring and suffix code.
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03 · QUOTE
Review pricing, lead time, warranty and delivery terms.
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04 · DISPATCH
Complete order checks, protective packing and shipment planning.
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