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Product description

The Bosch Rexroth RD51.1-4N-110-L-V1-FW belongs to the RD 500 RD51 frequency converter family with U/f characteristic control. The complete type code describes a converter for a three-phase supply from 380 to 480 V AC at ±10 %, without an integrated braking chopper and with a typical rated motor power of 110 kW. Code L denotes forced-air cooling, V1 denotes an external 24-V standby supply, and FW indicates that the application-specific firmware is ordered as a separate item. In the 110-kW power class, the device provides a rated current of 195 A and rated apparent power of 128 kVA at a pulse frequency of 4 kHz. For short load peaks, Rexroth specifies 254 A for 60 seconds, 332 A for one second and 390 A for 0.5 seconds. The corresponding peak power is 167 kVA for 60 seconds. The adjustable output frequency range extends from 0 to 250 Hz. The forced-air-cooled frame-size E enclosure provides IP20 protection and weighs 74 kg. Before replacement, the complete type number, supply voltage, motor power, output current, cooling path and external standby supply must match the existing installation. Because this version has no internal braking chopper, the installed braking and regenerative concept must be checked separately. The parameter set, firmware version, motor data, ramps, limits and control and power terminals must also be documented from the existing unit. After mechanical installation, the protective conductor, supply and motor connections and airflow should be checked. The backed-up parameter set should then be transferred in a controlled process and the drive initially commissioned without process load. Direction of rotation, output current, motor temperature, fault messages and operation under defined load must be checked step by step. The RD51.1-4N-110-L-V1-FW is therefore a precisely identifiable replacement device for existing Rexroth RD500 drive systems in this power class.

Bosch Rexroth RD51.1-4N-110-L-V1-FW

Specifications

Manufacturer Bosch Rexroth
Product series RD 500 RD51
Manufacturer/order/identification number RD51.1-4N-110-L-V1-FW
Device type Frequency converter
Control principle U/f characteristic control
Supply connection 3 × 380–480 V AC, ±10 %
Braking chopper Without integrated braking chopper
Rated motor power 110 kW
Pulse frequency 4 kHz
Output frequency 0–250 Hz
Rated current 195 A
Peak current for 60 s 254 A
Peak current for 1 s 332 A
Peak current for 0.5 s 390 A
Rated apparent power 128 kVA
Peak power for 60 s 167 kVA
Cooling method Forced-air cooling (code L)
Standby supply External 24 V (code V1)
Degree of protection IP20
Weight 74 kg
Control cabinet with PLC modules and automation components
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FAQ

Frequently asked questions

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What performance data apply to the Bosch Rexroth RD51.1-4N-110-L-V1-FW?

This version is rated for 110 kW motor power and supplies 195 A rated current and 128 kVA rated apparent power at 4 kHz. A current of 254 A is specified for 60 seconds.

What do codes N, L and V1 mean in the type code?

N identifies the converter without an integrated braking chopper, L denotes forced-air cooling and V1 denotes the external 24-V standby supply.

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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