Rexroth R911311065 | FCS01 Single-Phase VFD, New Original

Description

Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.

3. Key Technical Specifications

Confirm each line against the OEM datasheet and the nameplate on your existing unit before ordering. The option-code string defines the filter, brake chopper, and interface configuration for this build.

4. Product Introduction

The Rexroth FCS01.1E-W0011-A-04-NNBV is a single-phase frequency converter for controlling three-phase induction motors up to the 1.1 kW class. It takes a 230V single-phase supply and produces a variable-frequency, variable-voltage output for the motor. It supports V/f control and sensorless vector control, and it carries Modbus RTU on RS-485 as standard.

The engineering value is the compact single-phase package with a built-in Modbus interface. On a small machine — a conveyor, a fan, a pump, or a packaging axis — the drive fits in a shallow panel and talks to the controller over two wires. In my experience, the most common cause of a drive fault in this class is not a dead power stage — it is an undersized supply, a motor cable that is too long and unshielded, or a parameter set that was never matched to the motor nameplate. Check those three before you replace the unit.

Two things decide whether a swap works. First, the option-code string. The A-04-NNBV suffix determines the EMC filter, the brake chopper, and the interface configuration. A unit with a different suffix may not fit the same panel or meet the same EMC requirement. Second, the parameter set. The motor data and the control configuration live in the drive, so pull the parameter file before you remove the old unit.

R911311065

R911311065

R911311065

R911311065

R911311065

5. Application Scenarios & Field Experience

Part 1 – Narrative Paragraph

The failure that stops a small machine is usually not a dead drive — it is a drive that trips on overcurrent because the motor data was never entered correctly. I have seen a conveyor drive trip every time the load picked up because the parameter set still carried the factory default motor current. The drive was doing its job — it was protecting a motor it did not know the rating of. Before you replace an FCS01, read the motor nameplate data and compare it to the drive parameters. A new unit with the same default settings will trip the same way.

Part 2 – Numbered List (Application Scenarios)

1. Packaging Machinery – Conveyor and Feeder Axes – The drive controls a small conveyor or feeder motor with a speed reference from the PLC. The Modbus RS-485 link carries the start/stop and frequency reference without additional analog wiring.
2. HVAC – Fan and Pump Control – Used on a small supply fan or circulation pump. The single-phase input matches the panel feed, and the V/f control keeps the motor within its thermal limits at low speed.
3. Water Treatment – Dosing and Transfer Pumps – The drive controls a small transfer or dosing pump with a speed setpoint from the control system. The integrated braking option (if fitted) shortens the stop time.
4. Material Handling – Small Roller and Belt Drives – Used on a standalone roller conveyor or a small belt drive where a full three-phase feed is not available. The compact footprint fits a shallow panel.

Part 3 – Short Field Story

A packaging plant had a small conveyor drive that would trip on overcurrent every time a box jammed. The crew had replaced the drive twice, and the trips continued. We asked them to check the motor cable and the parameter set. The cable was unshielded and ran parallel to a power feeder for several meters, and the motor data in the drive was still at factory default. The plant fitted a shielded cable, entered the motor nameplate data, and set the current limit correctly. The nuisance trips stopped. The original drives had been fine — the installation and the parameters were the problem.

6. Standard Operating Procedure (SOP) for Quality Control

• Visual & Origin Inspection – We verify the Rexroth marking, the FCS01.1E-W0011-A-04-NNBV model string, the R911311065 order code, and the date code. We inspect the terminals, the fan, and the housing for damage or moisture ingress. A unit with a damaged terminal block or a cracked housing is rejected.
• Option-Code Documentation – We read and photograph the full model string and record the option-code configuration. That record ships with the unit so you can compare it against the unit you are replacing.
• Power-Up Self-Test – The unit is powered on a bench fixture at rated input. We verify it completes its initialization and that the display or status LEDs show normal operation without a fault code.
• Output Verification – We connect the drive to a test motor or a load bank and verify the output voltage and current across the frequency range. We check the current limit and the overload behavior against the OEM specification.
• Communication Test – We verify the Modbus RTU interface with a test master and confirm the address and baud rate settings.
• Digital and Analog I/O Test – We exercise each input and output and verify the drive responds correctly.
• Parameter Backup – Where the unit carries an existing parameter set, we extract and archive it before shipping.
• ESD-Safe Packaging – The unit is wrapped in anti-static film, seated in a foam insert with the terminals protected, and packed in a double-wall carton with handling labels.

7. Frequently Asked Questions (FAQ)

Q1: What does the option-code string mean on this drive?

A: The A-04-NNBV suffix encodes the EMC filter class, the brake chopper configuration, and the interface options for this build. I cannot decode every character from the model number alone — the Rexroth ordering table is the authority. Read the full string on your existing unit and compare it to the replacement before you order. A unit with a different suffix may not meet the same EMC requirement or fit the same panel.

Q2: Can I replace this drive with a different FCS01 power class?

A: Only if the motor current is within the replacement’s rating. A larger drive can run a smaller motor if the current limit and the motor data are set correctly, but a smaller drive cannot carry a larger motor. Check the motor nameplate current against the drive’s rated output current before you order.

Q3: What is the warranty on this drive?

A: We offer a 12-month warranty from the ship date. It covers power stage failure, control board failure, and communication port failure under normal operating conditions. It does not cover damage from incorrect input voltage, a shorted motor winding, a motor cable fault, or operation beyond the rated current. We test every drive on a bench fixture before it ships.

Q4: Do you have this exact model in stock?

A: Rexroth inventory moves and varies by build. Confirm availability before you plan an outage. If we are out of the exact option-code variant, we will tell you what we actually have and whether a different build would suit your application.

Q5: Any installation pitfalls I should watch for?

A: Four. First, verify the input voltage and the motor nameplate current before you power up — a single-phase 230V unit will not run on a 400V feed. Second, use a shielded motor cable and ground the shield at both ends; an unshielded cable causes the overcurrent and communication faults that get blamed on the drive. Third, back up the parameter set from the old drive before you remove it. Fourth, after the swap, run the motor through its speed range at no load and then under load before you return the machine to production. A drive that powers up is not necessarily controlling the motor correctly.