Control Techniques UNI3404 Unidrive – 30 kW AC Drive
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Product Information
The Control Techniques UNI3404 is a Unidrive frequency inverter for three-phase industrial motor control in the Unidrive Classic product family. This 30 kW (40 HP) heavy-duty drive provides 60 A continuous output and operates from a 380-480 V AC three-phase supply. Its Size 3 frame and IP00 protection rating make the exact drive format important when maintaining an installed motor control panel, including legacy conveyors, pumps, fans and process machinery.
The UNI3404 supports open-loop V/f, open-loop vector, closed-loop vector, servo and regenerative control modes. Machine integration is provided by three digital inputs, three analog inputs, three digital outputs and two analog outputs. The drive also accepts one Large Option Module and one Small Option Module, so a replacement must be checked against the option modules installed in the existing Unidrive Classic system. Commissioning is performed through the integrated Unidrive keypad, with parameter editing and parameter backup or restoration available through the keypad or a compatible software tool.
For troubleshooting, drive status and errors can be monitored through the Unidrive LED and keypad display, including menu 0 and advanced parameters. Before returning a replacement to service, check the 380-480 V three-phase supply, the transferred parameters, the selected control mode, the keypad connection and the installed option modules. As the UNI3404 is discontinued, a matching spare, repair or tested exchange unit can support continued operation of an installed Unidrive Classic panel.
Technical Specifications
| Manufacturer | Control Techniques |
| Part number | UNI3404 |
| Model/type | Unidrive |
| Component type | Frequency inverter |
| Product family | Unidrive Classic |
| Rated power | 30 kW |
| Rated power | 40 HP |
| Continuous output current | 60 A |
| Rated input current | 52 A |
| Supply voltage | 380-480 V AC |
| Input phase | 3 phase |
| Control modes | Open-loop V/f, open-loop vector, closed-loop vector, servo, and regenerative |
| Digital inputs | 3 |
| Analog inputs | 3 |
| Digital outputs | 3 |
| Analog outputs | 2 |
| Frame size | Size 3 |
| Ingress protection rating | IP00 |
| Keypad interface | Integrated interface for configuration and diagnostics |
| Large Option Module slot | 1 LOM slot |
| Small Option Module slot | 1 SOM slot |
| Lifecycle status | Discontinued |
Programming and Configuration
The integrated Unidrive keypad is used for setup, parameter editing and drive diagnostics. Drive status and error monitoring can be accessed through keypad display menu 0 and advanced parameters, allowing the replacement unit to be checked during commissioning.
A replacement UNI3404 may require parameter transfer before it can operate in the existing machine. Parameters can be backed up and restored using the Unidrive keypad or a compatible software tool. The selected control mode, machine parameters and installed option modules should match the original Unidrive Classic configuration before the drive is returned to service.
Communication and System Integration
The drive provides three digital inputs, three analog inputs, three digital outputs and two analog outputs for machine commands, reference signals, status monitoring and control integration. These I/O points should be compared with the wiring and signal requirements of the existing control panel when selecting a replacement.
The Unidrive Classic expansion architecture provides one Large Option Module slot and one Small Option Module slot. Depending on the installed modules, the expansion arrangement supports fieldbus communication, additional I/O or feedback handling. Option modules should be matched and transferred carefully when replacing an existing UNI3404.
Diagnostics and Status Indication
The UNI3404 provides drive status and error monitoring through the Unidrive LED and keypad display. Menu 0 and advanced parameters provide access to operating status and error information during commissioning and troubleshooting.
When investigating a replacement drive, check the 380-480 V three-phase supply, keypad display, transferred parameters, selected control mode and installed option modules. Parameter backup and restoration through the keypad or a compatible software tool can help compare the replacement configuration with the original drive.
Replacement and Spare Part Considerations
For a like-for-like replacement, match the Control Techniques UNI3404 part number, Unidrive Classic family, 380-480 V three-phase supply, 30 kW (40 HP) rating, 60 A continuous output, Size 3 frame and IP00 protection rating. The digital and analog I/O arrangement and the installed Large Option Module and Small Option Module should also correspond to the existing drive system.
The UNI3404 is discontinued and is intended for maintenance of installed Unidrive Classic equipment. Before commissioning a spare, transfer or restore the drive parameters, confirm the control mode and check the keypad and option-module arrangement. ABC Industrial Parts can support repair, tested exchange and preparation of legacy drive spares where configuration transfer is required.
Frequently Asked Questions
What is the Control Techniques UNI3404?
The UNI3404 is a 30 kW (40 HP) Unidrive Classic frequency inverter with 60 A continuous output for 380-480 V AC three-phase motor-control systems.
Which control modes does the UNI3404 support?
The drive supports open-loop V/f, open-loop vector, closed-loop vector, servo and regenerative control modes.
How is a UNI3404 replacement configured?
Configuration is handled through the integrated Unidrive keypad. Parameters can be backed up and restored using the keypad or a compatible software tool before commissioning the replacement.
What should be checked before replacing a UNI3404?
Check the part number, 380-480 V three-phase supply, 30 kW rating, 60 A continuous output, Size 3 frame, I/O arrangement, control mode and installed Large Option Module and Small Option Module.
How are UNI3404 drive errors monitored?
Drive status and errors are monitored through the Unidrive LED and keypad display, including keypad display menu 0 and advanced parameters.
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Data backup and recovery
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Control Techniques.
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