Control Techniques SP1401 Unidrive SP AC Drive
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Product Information
The Control Techniques SP1401 is a Unidrive SP AC frequency inverter and servo drive for industrial motor control. This Unidrive SP Frame Size 1 unit accepts 380–480 V AC three-phase input and provides 1.1 kW Normal Duty output or 0.75 kW Heavy Duty output. It supports Open Loop Vector Control, Closed Loop Vector Control, Servo/Brushless operation, Rotor Flux Control and regenerative operation. A built-in dynamic braking transistor supports controlled deceleration, while the compact Frame Size 1 design suits existing Unidrive SP motor-control panels.
When preparing an SP1401 replacement, the input voltage, Frame Size 1 mounting arrangement, motor data, rated duty and required operating mode must match the existing installation. The drive provides three analog inputs, two analog outputs, six digital inputs and four digital outputs for machine commands, feedback, status monitoring and control integration. An optional Unidrive SP keypad can be used for parameterization and monitoring; the base SP1401 unit does not have a keypad pre-installed. Commissioning therefore includes checking the installed control configuration and setting the drive for the required application.
The SP1401 can be parameterized and monitored through a compatible Unidrive SP keypad. For troubleshooting and replacement work, check the 380–480 V AC three-phase supply, the selected operating mode, motor data, I/O wiring and the installed mounting arrangement before returning the drive to service. The SP1401 is discontinued, and the Unidrive SP series has been superseded by the Unidrive M series, so this unit remains relevant for maintaining existing Unidrive SP equipment and legacy automation panels.
Technical Specifications
| Manufacturer | Control Techniques |
| Part number | SP1401 |
| Model/type | Unidrive SP |
| Component type | AC frequency inverter and servo drive |
| Product family | Unidrive |
| Series | Unidrive SP |
| Input voltage | 380–480 V AC, 3-phase |
| Input frequency | 48–65 Hz |
| Rated output power, Normal Duty | 1.1 kW |
| Rated output power, Heavy Duty | 0.75 kW |
| Output current, Normal Duty | 2.8 A |
| Output current, Heavy Duty | 2.1 A |
| Output frequency range | 0–550 Hz |
| Operating modes | Open Loop Vector, Closed Loop Vector, Servo/Brushless, Rotor Flux Control, and Regenerative |
| Dynamic braking | Built-in dynamic braking transistor |
| Frame size | 1 |
| Analog inputs | 3 |
| Analog outputs | 2 |
| Digital inputs | 6 |
| Digital outputs | 4 |
| Keypad | Optional or configuration-dependent; not pre-installed on the base SP1401 unit |
| Lifecycle status | Discontinued; Unidrive SP series superseded by Unidrive M series |
Programming and Configuration
A compatible Unidrive SP keypad provides parameterization and monitoring for the SP1401. The keypad is optional or configuration-dependent and is not pre-installed on the base unit, so replacement planning should include the keypad arrangement used on the existing drive.
Before commissioning a spare, check the required operating mode, motor data, duty rating and machine I/O configuration. The SP1401 supports Open Loop Vector, Closed Loop Vector, Servo/Brushless, Rotor Flux Control and regenerative operation, making correct mode selection an important part of replacement setup.
Diagnostics and Status Indication
Parameterization and monitoring are performed through a compatible Unidrive SP keypad. This provides the practical interface for checking drive parameters and operating information during commissioning and maintenance.
For first-line replacement checks, confirm the 380–480 V AC three-phase supply, the selected control mode, motor data, I/O wiring and the Frame Size 1 installation arrangement. The built-in dynamic braking transistor supports controlled deceleration when the drive is configured for the required application.
Replacement and Spare Part Considerations
The replacement must match the Control Techniques SP1401 part number, Unidrive SP series, Frame Size 1 arrangement, input voltage and required Normal Duty or Heavy Duty rating. Confirm that the existing application requires 1.1 kW Normal Duty or 0.75 kW Heavy Duty operation and that the output current requirement fits 2.8 A Normal Duty or 2.1 A Heavy Duty operation.
Before the spare is returned to production, verify the operating mode, motor data, machine I/O wiring, keypad arrangement and dynamic braking requirements. The SP1401 is discontinued and the Unidrive SP series has been superseded by the Unidrive M series, making an exact SP1401 replacement relevant where an existing installation must remain on the Unidrive SP platform.
Frequently Asked Questions
What is the Control Techniques SP1401?
The SP1401 is a Unidrive SP AC frequency inverter and servo drive with a 380–480 V AC three-phase input, 1.1 kW Normal Duty output and 0.75 kW Heavy Duty output.
Which control modes does the SP1401 support?
The SP1401 supports Open Loop Vector, Closed Loop Vector, Servo/Brushless, Rotor Flux Control and regenerative operation.
What I/O is available on the SP1401?
The drive provides three analog inputs, two analog outputs, six digital inputs and four digital outputs.
How is the SP1401 parameterized and monitored?
A compatible Unidrive SP keypad can be used for parameterization and monitoring. The keypad is optional or configuration-dependent and is not pre-installed on the base SP1401 unit.
What should be checked before installing an SP1401 replacement?
Check the part number, Frame Size 1 mounting arrangement, 380–480 V AC three-phase supply, duty rating, operating mode, motor data, I/O wiring and keypad arrangement.
Is the Control Techniques SP1401 discontinued?
Yes. The SP1401 is discontinued, and the Unidrive SP series has been superseded by the Unidrive M series. The SP1401 remains relevant for existing Unidrive SP installations.
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