Description
Core Product Summary
The Mitsubishi FXAOM01AD is an industrial control module designation associated with analog output hardware. A documented variant, FXAOM01AD-1, provides eight individually isolated current-output channels with selectable 0–20 mA and 4–20 mA ranges. The documented configuration has 12-bit resolution and supports load resistance from 0 to 550 Ω.
The FXAOM01AD-1 is designed for a FLEX I/O and ControlNet-compatible architecture, with terminal-block options identified for the 1794 series. These details are important when assessing system fit: the module’s channel count, current-output characteristics, terminal arrangement, power requirements, and host interface must match the installed control system. Confirm whether the required part is FXAOM01AD or FXAOM01AD-1 before using the variant-specific specifications for procurement or replacement.
Key Technical Specifications
| Parameter | FXAOM01AD-1 documented configuration |
|---|---|
| Product type | Analog output module |
| Output channels | 8 |
| Output signal | Analog current |
| Output ranges | 0–20 mA and 4–20 mA |
| Channel isolation | Individual isolation |
| Resolution | 12 bit |
| Relative accuracy | ±0.1% FSD |
| Temperature drift | ≤ ±100 ppm/°C |
| Load resistance | 0–550 Ω |
| Data update time | 12 ms |
| Supply voltage | 24 V DC ±10% |
| 24 V supply current | ≤ 40 mA |
| FLEX bus supply | 5 V DC, ≤ 80 mA |
| Compatible terminal blocks | 1794-TB3/TB3S, 1794-TBN/TBNF |
| Operating temperature | 0 to 55°C |
| Operating humidity | 35–95% RH |
| Dimensions (W × H × D) | 94 × 46 × 75 mm |
Engineering Selection Highlights
- Eight analog output channels: Supports multiple current-command signals within one module configuration.
- Selectable current ranges: The documented variant supports both 0–20 mA and 4–20 mA, so the field device’s signal requirements must match the selected range.
- Individual channel isolation: Helps separate output channels electrically; verify grounding and field-wiring requirements for the complete installation.
- 12-bit resolution: Defines the output’s digital conversion granularity and should be considered when assessing the control system’s analog-command requirements.
- Maximum specified load of 550 Ω: Check the total loop resistance, including wiring and receiving-device input resistance.
- FLEX I/O interface: The documented variant is associated with FLEX I/O and ControlNet-compatible hardware, not automatically with Mitsubishi MELSEC-FX PLC expansion.
- Terminal-block selection: Confirm the installed terminal-block model and wiring arrangement before ordering a replacement.
FXAOM01AD
FXAOM01AD
System Compatibility & Integration Requirements
| Item | Documented requirement | Engineering consideration |
|---|---|---|
| Host interface | FLEX I/O bus | Confirm the installed system architecture supports the exact module variant. |
| Network context | ControlNet-compatible system | Check the host adapter and network configuration. |
| Terminal block | 1794-TB3, 1794-TB3S, 1794-TBN, or 1794-TBNF | Match the terminal assembly to the installed hardware. |
| Field signals | 0–20 mA or 4–20 mA | Confirm the configured range and receiving-device requirements. |
| Module power | 24 V DC ±10% and 5 V DC FLEX bus supply | Check both supply requirements and available capacity. |
| Redundant configuration | Redundancy support is documented for the FXAOM01AD-1 | Confirm the applicable redundant hardware and connector arrangement. |
Dimensions, Mounting & Connection Notes
The documented FXAOM01AD-1 measures 94 mm wide, 46 mm high, and 75 mm deep.
Installation planning should account for:
- The compatible terminal assembly and its wiring access.
- The required 24 V DC field supply and 5 V FLEX bus supply.
- Correct polarity and signal-range configuration.
- Output-loop resistance within the specified limit.
- Appropriate grounding and wiring separation.
- The documented operating temperature and humidity range.
Use the installation documentation applicable to the exact hardware revision for terminal assignments and wiring details.
Detailed Product Overview
Analog Signal Conversion
The provides eight analog current outputs for transferring controller commands to external equipment. Unlike a digital output, which switches between discrete states, an analog current output represents a variable command value. The receiving device interprets that signal according to its configured range and scaling.
The documented 12-bit resolution determines the granularity of the digital-to-analog conversion. The specified relative accuracy and temperature drift are also relevant when evaluating signal quality for a particular control loop. Actual loop performance depends on the complete system, including the receiving instrument, wiring, configuration, and operating conditions.
Electrical Interface and Load
The module supports 0–20 mA and 4–20 mA output ranges, with a specified load-resistance range of 0–550 Ω. Engineers should calculate the total connected loop resistance before installation. If the receiving device and wiring create a load beyond the specified limit, the intended output signal may not be maintained.
Individual channel isolation is documented for the FXAOM01AD-1. This feature is relevant when assessing electrical separation between output circuits, but it does not eliminate the need for correct grounding, shielding, and wiring practices.
System Integration
The documented FXAOM01AD-1 uses the FLEX I/O bus and is compatible with a ControlNet-based architecture. Its listed terminal-block options belong to the 1794 hardware family. This system context is particularly important for spare-parts procurement because a matching current range or channel count alone does not establish hardware compatibility.
The module’s power requirements include a 24 V DC supply and a 5 V DC FLEX bus supply. Both must be accounted for in the host installation. The published environmental limits should also be considered when evaluating cabinet conditions.
Procurement and Replacement
Before ordering, compare the complete model marking, suffix, terminal assembly, host adapter, and network architecture against the installed system. In particular, do not assume that specifications documented for FXAOM01AD-1 automatically apply to every unit labeled FXAOM01AD.
For replacement planning, confirm the output ranges, channel count, load requirements, power supplies, terminal arrangement, and redundancy configuration where applicable. These checks provide a more reliable basis for selecting the correct module than model-family similarity alone.
Applications & System Role
The FXAOM01AD-1 serves as an analog output interface in a FLEX I/O and ControlNet-compatible control architecture. It converts controller output data into current signals for external equipment that accepts analog commands.
Potential functional applications include:
- Control-valve positioning: Providing current-reference signals to compatible valve positioners.
- Drive reference signals: Sending analog commands to equipment with compatible current inputs.
- Process regulation: Transmitting controller-generated current signals to field instruments and control devices.
- Multi-loop control panels: Handling several analog command channels through one output module.
- Redundant control configurations: Supporting system designs that use the documented redundancy arrangement.
These are functional application scenarios, not claims of verified installations in specific plants.
Frequently Asked Questions
What is the Mitsubishi FXAOM01AD?
It is a model designation associated with industrial analog output hardware. The specifically documented FXAOM01AD-1 variant is an eight-channel analog current-output module for a FLEX I/O and ControlNet-compatible architecture.
How many output channels does the FXAOM01AD-1 have?
It has eight analog output channels.
Which current ranges does the documented variant support?
The FXAOM01AD-1 supports 0–20 mA and 4–20 mA current outputs.
What is the resolution of the FXAOM01AD-1?
The documented resolution is 12 bit.
What is the maximum specified load resistance?
The documented load-resistance range is 0–550 Ω.
Which terminal blocks are compatible with the documented variant?
The listed terminal-block options are 1794-TB3, 1794-TB3S, 1794-TBN, and 1794-TBNF.
Can the FXAOM01AD-1 be used with any Mitsubishi FX-series PLC?
Compatibility should not be assumed. The documented variant uses a FLEX I/O interface, so the host architecture and hardware configuration must be checked before selecting it for a Mitsubishi PLC installation.
What should be checked before purchasing a replacement?
Confirm the full model designation and suffix, the number of channels, output ranges, terminal-block type, supply requirements, host interface, and redundancy configuration. These details determine whether the candidate module matches the existing installation.
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