Description
Product Overview
The ABB UA C326 AE01 HIEE401481R0001 is a combined input/output module documented for ABB UNITROL P excitation equipment. In this application, the module forms part of the system’s control-interface hardware, supporting the exchange of signals required by the overall excitation-control arrangement. ABB’s spare-parts documentation lists two UA C326 AE1 modules per UNITROL P unit, making the exact module designation and system configuration important when preparing maintenance stock.
The term combined I/O should not be taken as evidence that the module supports any arbitrary mix of analog and digital channels. Available third-party descriptions disagree on channel counts, electrical ratings, and communication protocols. Without a matching ABB technical manual or wiring diagram, those values should not be used to configure field wiring or approve a replacement. The module should be evaluated as part of the specified UNITROL P hardware architecture, rather than as a general-purpose PLC card.
For replacement procurement, compare the full order number, model suffix, board revision, connector arrangement, and host-system parts list. Confirm whether the installed equipment requires one or two modules and whether the replacement has been tested in a compatible configuration. If sourcing refurbished stock, request actual nameplate photographs and test records. A module that passes a basic power-up check may still have untested I/O channels or faults that appear only under operating conditions.
The ABB UA C326 AE01 is therefore best specified and purchased by its complete catalog identity and documented application. Confirming these details before ordering helps reduce the risk of receiving a similar-looking module with unsuitable hardware or an unverified revision.
Product Introduction
The ABB UA C326 AE01 is a combined I/O module listed in the UNITROL P excitation-system spare-parts documentation. ABB identifies the module by order number HIEE401481R0001 and lists two units per system.
For maintenance planning, verify the original module label, system configuration, connector details, and channel requirements. Confirm electrical specifications from the applicable ABB documentation before connecting field signals.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | UA C326 AE01 |
| Compact model designation | UAC326AE01 |
| Order number | HIEE401481R0001 |
| Product category | Combined I/O module |
| Associated system | UNITROL P |
| Intended role | Input/output interfacing within the excitation system |
| Listed quantity per system | 2 |
| Working voltage | Not verified |
| Analog input channel count | Not verified from the ABB reference reviewed |
| Analog output channel count | Not verified |
| Digital input channel count | Not verified |
| Digital output channel count | Not verified |
| Communication protocol | Not independently verified |
| Operating temperature | Not verified |
| Protection rating | Not verified |
| Installation method | Follow the applicable UNITROL P hardware and wiring documentation |
Engineering caution: Do not rely on uncorroborated online values for 24 VDC operation, channel counts, Modbus support, or environmental limits. Confirm the applicable manual and wiring diagrams for the exact installed revision.
UAC326AE01 HIEE401481R1
Related Products
These modules appear in ABB’s UNITROL P spare-parts documentation. They perform different functions and are not direct substitutes for the UA C326 AE01.
- ABB PP C322 BE1 — HIEE300900R0001: Processing unit.
- ABB GD B021 BE1 — HIEE300766R0001: Gate control unit.
- ABB KU C321 AE1 — HIEE300698R0001: Power pack.
- ABB UNC 4672a-P, V1 — HIEE205012R0001: Measuring interface.
- ABB UNC 4673a-P, V1 — HIEE205014R0001: Measuring interface.
- ABB UP C090 AE1 — HIEE300661R0001: Binary fieldbus coupler.
- ABB UF C092 B1 — HIEE300910R0001: 16-fold binary input module.
- ABB AR C093 A1 — HIEE300690R0001: 16-fold output relay module.
- ABB UA C096 AE1 — HIEE300794R0001: Analog input/output module.
These references can help identify the surrounding hardware during a system audit. Check the installed bill of materials before ordering associated modules.
Frequently Asked Questions
Q1. What is ABB UAC326AE01 HIEE401481R0001?
It is a combined I/O module documented for ABB UNITROL P excitation systems. ABB’s spare-parts document lists two units per system.
Q2. Is HIEE401481R1 the complete part number?
The ABB spare-parts reference gives HIEE401481R0001. Since your supplied number is abbreviated, compare it with the physical label and original parts list before placing an order.
Q3. Is this module used in UNITROL 5000 systems?
The ABB document cited here specifically lists the module for UNITROL P. Do not assume that the same part is interchangeable across UNITROL P, UNITROL 5000, and other ABB excitation platforms without a documented cross-reference.
Q4. How many modules are used in one system?
ABB lists two UA AE1 combined I/O modules per UNITROL P unit. The actual quantity required for a repair depends on the installed configuration and the fault being addressed.
Q5. What are the module’s voltage and I/O channel counts?
These details were not established by the ABB spare-parts reference. Obtain the correct technical manual or wiring documentation before connecting field devices or specifying replacement electrical characteristics.
Q6. Can a used or refurbished module be used as a spare?
Potentially, if its identity and condition are verified. Request photographs of the actual unit, confirmation of the complete order number, inspection records, and functional-test evidence. Where possible, ask whether the test covered the individual I/O channels rather than only a power-up check.
Q7. What information should be confirmed before purchase?
Confirm the complete part number, model suffix, UNITROL P system configuration, required quantity, hardware revision, connector arrangement, test status, and warranty terms. These checks are particularly important when maintaining legacy excitation equipment.
