Control Techniques 3098-0080 SP0405 AC Frequency Inverter Drive
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Product Information
The Control Techniques 3098-0080 SP0405 is a Size 0 AC frequency inverter drive from the Unidrive SP family. It is rated for 1.5 kW (2 HP) motor applications and operates from a 380-480 V AC three-phase supply. The drive provides 4.2 A continuous output current and 6.3 A peak output current for up to 60 seconds. Its IP20 enclosure is intended for installation inside a suitable electrical cabinet or protected control enclosure. Control modes include open-loop V/Hz, open-loop vector, closed-loop vector, servo and permanent-magnet motor control.
For replacement commissioning, the SP0405 provides an RS-485 interface through an RJ45 connection and operates as a Modbus RTU slave at up to 115.2 kbps. Up to 3 SM option modules can be installed for additional CTNet, Ethernet, PROFIBUS-DP, feedback or motion functions. Smartcard parameter storage supports configuration backup, cloning and transfer to a spare drive. CTSoft is used for commissioning, parameter configuration and monitoring, while SM-Keypad, SP0-Keypad or SM-Keypad-Plus accessories provide local display and parameter access. The drive is supplied without a keypad, so an external keypad may be required for local commissioning.
The drive shows operating states and fault conditions through the keypad display, including rd for ready, InH for inhibit, run for running and trip codes for faults. CTSoft provides a real-time oscilloscope and parameter monitor, while the trip history buffer uses Pr 10.20 through Pr 10.29 and status word parameters use Pr 10.01 through Pr 10.15. When troubleshooting a replacement, check the AC supply, input connections, motor and braking-resistor wiring, installed option modules and transferred parameters. For internal hardware faults such as a possible braking-transistor failure, repair or a tested exchange drive may be more practical than field repair.
Technical Specifications
| Manufacturer | Control Techniques |
| Part number | 3098-0080 |
| Model/type | SP0405 |
| Component type | AC frequency inverter drive |
| Product family | Unidrive SP |
| Frame size | Size 0 |
| Input voltage | 380-480 V AC, 3-phase |
| Input frequency | 48-65 Hz |
| Rated power | 1.5 kW |
| Horsepower rating | 2 HP |
| Continuous output current | 4.2 A |
| Peak output current | 6.3 A for up to 60 seconds |
| Typical input current | 5.6 A |
| Maximum continuous input current | 5.7 A |
| Minimum braking resistor resistance | 105 Ohm |
| Control modes | Open-loop V/Hz, open-loop vector, closed-loop vector, servo and permanent-magnet motor control |
| Serial interface | RS-485 via RJ45 |
| Serial communication speed | 115.2 kbps |
| Built-in protocol | Modbus RTU slave |
| Optional communication protocols | CTNet, Ethernet, PROFIBUS-DP |
| Option module capacity | Up to 3 SM option modules |
| Ingress protection rating | IP20 |
| Product lifecycle status | Discontinued |
Programming and Configuration
CTSoft supports commissioning, parameter configuration, monitoring and real-time diagnostics for the SP0405. Compatible SM-Keypad, SP0-Keypad or SM-Keypad-Plus accessories provide local display and parameter access; the drive is supplied without a keypad.
Smartcard parameter storage allows drive parameters to be backed up, cloned and transferred to a replacement unit. During commissioning, transfer the saved configuration and check the motor parameters, control mode, communication settings and installed option-module configuration before returning the drive to service.
Communication and System Integration
The built-in RS-485 interface uses an RJ45 connection and supports Modbus RTU slave communication at up to 115.2 kbps. This supports integration with Modbus RTU control systems using the existing Unidrive SP installation.
The drive accepts up to 3 SM option modules for additional system functions. Available protocol options include CTNet, Ethernet and PROFIBUS-DP, while option modules can also provide feedback or motion functionality. Match the replacement drive's installed modules and communication configuration before commissioning.
Diagnostics and Status Indication
The keypad display indicates the drive operating state, including rd for ready, InH for inhibit and run for running. Trip codes identify fault conditions. CTSoft adds a real-time oscilloscope and parameter monitor for commissioning and fault investigation.
The parameter trip history buffer is available through Pr 10.20 through Pr 10.29, while status word parameters are available through Pr 10.01 through Pr 10.15. Initial checks should include the AC supply, input connections, motor wiring, braking-resistor circuit, cabinet cooling and installed option modules.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Status LED / Keypad Display | Displays status codes | Indicates drive operating status, including rd for ready, InH for inhibit, run for running and trip codes for fault conditions. |
Replacement and Spare Part Considerations
The 3098-0080 SP0405 is a discontinued Unidrive SP Size 0 drive for like-for-like replacement of existing installations. Before fitting a spare, match the part number, 380-480 V AC three-phase input, 1.5 kW rating, 4.2 A continuous output current, installed SM option modules, communication arrangement and braking-resistor specification. The minimum braking resistor resistance for SP0405 is 105 Ohm.
A replacement drive may require parameter transfer and commissioning rather than simple plug-in installation. Use the Smartcard backup to restore the drive configuration, then check motor parameters, control mode, Modbus RTU settings, option modules and keypad requirements. CTSoft and compatible keypad accessories support configuration and commissioning work, while ABC Industrial Parts can assist with preparing a replacement or arranging a tested exchange unit when internal hardware faults affect the original drive.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| UU | Under Voltage | DC bus voltage dropped below the minimum threshold. | AC supply failure, low AC line voltage, blown input fuses or an open soft-start relay. | Check AC supply voltage, input power connections and power-line stability. |
| OU | Over Voltage | DC bus voltage exceeded the maximum safety threshold. | Excessive motor deceleration inertia, an open or undersized dynamic braking resistor, or a supply-voltage transient. | Increase deceleration time and check or install the correct dynamic braking resistor and braking transistor module. |
| OI.AC | Instantaneous Output Overcurrent | Instantaneous drive output current exceeded the peak limit. | Output cable short circuit or earth fault, motor insulation failure, excessive acceleration rate or incorrect motor parameters. | Inspect motor cables, test motor insulation resistance, verify motor parameters and review acceleration settings. |
| OI.br | Braking Transistor Overcurrent | An instantaneous short circuit or overcurrent occurred in the internal dynamic braking IGBT. | Shorted braking resistor, braking resistor below the 105 Ohm minimum for SP0405, or damaged braking-resistor cable. | Check braking-resistor resistance and wiring. If resistance is correct, arrange drive service for a possible internal hardware fault. |
| It.AC | Motor I2t Overload | The motor thermal accumulation model exceeded 100% capacity. | Mechanical motor overload, incorrect motor-rated current setting or sustained low-speed, high-torque operation without forced cooling. | Check mechanical loading, verify the motor-rated current parameter Pr 0.46 and inspect motor cooling. |
| It.br | Braking Resistor Overload | The braking-resistor thermal model exceeded its calculated continuous dissipation limit. | Excessive regenerative deceleration frequency or incorrect braking-resistor thermal parameters. | Increase deceleration time, increase braking-resistor capacity and update the thermal resistance parameters. |
| O.ht1 | Power Stage Over Temperature | Power heatsink temperature exceeded the maximum operating threshold. | High ambient temperature, obstructed heatsink airflow, failed internal cooling fan or excessive drive loading. | Check airflow, clean heatsink fins, verify the cooling fan and reduce carrier switching frequency if appropriate. |
| O.ht2 | Control Board Over Temperature | The internal control-board ambient temperature sensor exceeded its safety limit. | Cabinet temperature above the limit or enclosure ventilation failure. | Check panel cooling or air conditioning and confirm that cabinet ambient conditions are within specification. |
| th | Motor Thermistor Trip | The motor thermistor exceeded the over-temperature resistance threshold. | Motor thermal overload, broken thermistor cable or motor cooling-fan failure. | Allow the motor to cool and check motor loading, thermistor wiring and ventilation. |
| Ph | Input Phase Loss | One of the three AC input supply phases was lost. | Blown input fuse, line imbalance or a missing phase at the input terminal. | Measure all three input phase voltages and inspect the input fuses and supply connections. |
Frequently Asked Questions
What is the Control Techniques 3098-0080 SP0405?
It is a Size 0 Unidrive SP AC frequency inverter drive rated at 1.5 kW (2 HP) for a 380-480 V AC three-phase supply. It provides 4.2 A continuous output current and 6.3 A peak output current for up to 60 seconds.
Which communication interface does the SP0405 use?
The drive has a built-in RS-485 interface through an RJ45 connection and supports Modbus RTU slave communication at up to 115.2 kbps. Up to 3 SM option modules can add CTNet, Ethernet or PROFIBUS-DP functions.
How can parameters be transferred to an SP0405 replacement?
Smartcard parameter storage supports configuration backup, cloning and transfer to a replacement drive. CTSoft can be used for commissioning and parameter management, and compatible SM-Keypad, SP0-Keypad or SM-Keypad-Plus accessories provide local parameter access.
What does the SP0405 display when it is ready or running?
The keypad display shows rd when the drive is ready, InH when it is inhibited and run when it is running. Trip codes indicate fault conditions and can be investigated with CTSoft, the trip history buffer at Pr 10.20 through Pr 10.29 and status word parameters at Pr 10.01 through Pr 10.15.
What should be checked for an OI.br fault?
Check the braking-resistor resistance and wiring. The braking resistor must not be below the 105 Ohm minimum for SP0405. If the resistance and wiring are correct, the drive may have an internal hardware fault requiring service or exchange.
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Specific firmware and hardware versions
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