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Product description

The Control Techniques UNI1405LFT is a variable-frequency drive from the Unidrive Classic series. The UNI1405 designation identifies the 400-V product family with a rated power of 4.0 kW or 5.0 hp. The LFT suffix denotes the Low Frequency Torque version, whose standard PWM switching frequency is 9 kHz according to the Unidrive manual. The drive is suitable for controlled industrial motor applications in which speed, torque and process operation are defined by an existing Unidrive parameter set. It is intended as a like-for-like replacement within existing Control Techniques installations, not as an unchecked universal substitute. The three-phase mains supply is 380 to 480 V with a tolerance of ±10 %; the documented frequency range is 48 to 65 Hz. For UNI1405 LFT, the manual specifies a maximum output current of 9.5 A in the standard duty cycle at 40 °C. Continuous-operation ratings are 4.3 A at 40 °C and 3.3 A at 50 °C. Typical input current is 10.0 A and maximum continuous input current is 12.0 A. At 9 kHz, the ratings table gives a maximum power dissipation of 190 W for UNI1405. Product-specific logistics data states 340 × 105 × 200 mm and 3.96 kg. Before commissioning, check the supply voltage, motor ratings, LFT operating mode, switching frequency, acceleration and braking ramps, and the stored parameter set. Control terminals, encoder or option modules, EMC filter, braking resistor and cooling paths must also match the existing machine. Current ratings decrease at higher ambient temperature and depend on the duty cycle. This item is intended for maintenance teams and retrofit specialists replacing an existing UNI1405LFT in a documented drive application.

Control Techniques UNI1405LFT

Specifications

Manufacturer Control Techniques
Product series Unidrive Classic LFT
Manufacturer/order/identification number UNI1405LFT
Device type Variable-frequency drive
LFT version Low Frequency Torque
Rated power 4.0 kW / 5.0 hp
Supply voltage 380–480 V ±10 %
Supply phases 3-phase
Supply frequency 48–65 Hz
Default PWM switching frequency 9 kHz
Maximum output current, standard duty at 40 °C 9.5 A
Continuous output current at 40 °C 4.3 A
Continuous output current at 50 °C 3.3 A
Typical input current 10.0 A
Maximum continuous input current 12.0 A
Maximum power dissipation at 9 kHz 190 W
Dimensions 340 × 105 × 200 mm
Weight 3.96 kg
Control cabinet with PLC modules and automation components
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FAQ

Frequently asked questions

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What does LFT mean on the UNI1405LFT?

LFT denotes the Low Frequency Torque version of the Unidrive. The manual specifies 9 kHz as the default PWM switching frequency and provides separate current ratings for standard and continuous operation.

What should be checked before replacement?

The decisive points are UNI1405LFT, the 380–480-V supply class, 4.0-kW motor assignment, duty cycle, switching frequency, control terminals, option modules, braking concept and the existing parameter set.

Is there a guarantee?

Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.

Please note that the guarantee only applies when the warranty seal is undamaged.

If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.

Further details are provided in the terms and conditions supplied with your quotation.

How quickly do you dispatch and which shipping options are available?

We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.

Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.

We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.

Which payment methods are available?

Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.

As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.

Can we return items if they were ordered incorrectly?

Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.

Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.

Is there a discount when ordering several items?

For larger order quantities or several items of one type, we can offer individual discounts.

Simply send us a quick enquiry - we check availability and will gladly prepare a tailored quotation with quantity pricing.

Do you also purchase industrial spare parts?

Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.

The process is straightforward: email us an inventory list or overview photos at info@reha-industriekomponenten.de. We calculate a market-based purchase price and send you an offer.

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