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YOKOGAWA / N-IO PLATFORM
A2MDV843-0S1000
16-Channel Isolated Digital I/O Module
Designed for configurable digital signal handling within Yokogawa's N-IO architecture, the A2MDV843 supports channel-level selection of digital input or digital output functionality through software configuration. 16 ISOLATED CHANNELS 24 V DC SYSTEM N-IO PLATFORM
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ENGINEERING SNAPSHOT
*Maximum current consumption under the specified all-channel digital I/O condition with a 20 mA source load.
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01
Channel-Level Configuration
Each channel can be configured in software for digital input or digital output functionality, allowing signal assignments to reflect the intended application.
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02
Isolated I/O Channels
The module provides 16 isolated channels. Confirm the required field-signal interface and applicable adaptor arrangement before installation.
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03
Redundant Configuration
A pair of matching A2MDV843 modules can be installed in a dual-redundant configuration, subject to system design and compatibility requirements.
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The A2MDV843 is intended for the Yokogawa N-IO environment and is supported by CENTUM VP R6.04 or later in the specified configuration. Confirm the system revision, base plate, I/O adaptor, field wiring, and required channel functions before ordering or replacing a module.
| Parameter | Specification | Selection Consideration |
|---|---|---|
| Model family | A2MDV843 Digital I/O Module | Confirm the complete ordering code and installed system variant. |
| Number of channels | 16, isolated | Review channel allocation and field wiring requirements. |
| Channel function | Digital input or digital output, selected by software | Check configuration settings before commissioning. |
| System power supply | 24 V DC | Verify system power and loading conditions. |
| Maximum current consumption | 700 mA | Specified when all channels are set to digital I/O and source load is 20 mA. |
| Withstand voltage | I/O to system: 1500 V AC for 1 minute; 42 V DC continuous | These values apply to the module by itself; base plate installation may affect the applicable specification. |
| Digital input format | Dry contact input | Check the required input adaptor and field device interface. |
| Maximum absolute input | 30.0 V DC | Do not exceed the specified input limit. |
| Input current | 6 mA ±20% | Confirm field-contact and interface compatibility. |
| Weight | Approx. 0.41 kg | Module weight only. |
| Component / Platform | Role in the System | What to Check |
|---|---|---|
| A2MDV843-0S1000 | 16-channel isolated digital I/O module with software-selectable channel function. | Full model code, channel configuration, and installed hardware revision. |
| A2BN3D | N-IO adaptor base plate associated with the A2MDV843 adaptor arrangement. | Confirm the actual base plate and the required adaptor combination. |
| A2SDV105 | Digital input adaptor for 24 V DC voltage input and dry-contact input applications. | Input type, isolation arrangement, and channel application. |
| A2SDV505 | Digital output adaptor for 24 V DC current-source output applications. | Output load, field power, and the specified adaptor configuration. |
| A2SDV506 | Relay output adaptor for dry-contact output applications. | Contact rating, load requirements, and wiring arrangement. |
| CENTUM VP | Control system environment; the A2MDV843 is specified for CENTUM VP R6.04 or later. | System release, I/O configuration, and project-specific compatibility. |
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| Delivery Typically 3–5 days, subject to stock confirmation. |
Warranty 12 months, subject to confirmed terms. |
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