RD51.1-7N-001-L-NN-NN-NN-FW Bosch Rexroth Indramat
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MPN: R911289696
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The Bosch Rexroth Indramat RD51.1-7N-001-L-NN-NN-NN-FW is a drive controller from the RD 500 Drive Controllers series. It operates on an inverter DC supply and supports a voltage range of 530 to 670 Volts. This model uses U/f curve control and forced air cooling, and does not include a built-in brake chopper.
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Product Description:
The RD51.1-7N-001-L-NN-NN-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat. It converts the fixed DC-link voltage from a front-end rectifier into a variable-frequency, variable-voltage three-phase output for an AC motor. In an automation cell, the unit sits between a supervisory PLC and the induction motor, where it delivers commanded speed profiles while monitoring current, temperature, and fault conditions. By modulating the motor supply in real time, it supports closed-loop control in conveyors, mixers, and general-purpose machine axes that need stable speed regulation and repeatable response under changing load.
The controller draws intermediate-circuit energy from an inverter DC supply, and the acceptable link voltage spans 530 to 670 V. Motor flux is regulated through U/f curve control, which keeps the ratio of stator voltage to frequency constant so standard squirrel-cage motors can maintain usable torque across the commanded speed range. Thermal management relies on forced-air cooling, so internal fans move ambient air through the housing to remove switching losses from the power section. The drive is supplied without a built-in brake chopper, so applications that require rapid deceleration must use an external chopper and resistor to absorb regenerated energy.
This unit belongs to Design Generation 1, which identifies the first design iteration of the platform. The option slots are not equipped, so the base unit is delivered without additional communication or I/O cards installed. Within the RD 500 Drive Controllers series, the platform uses a common control concept for inverter operation, diagnostics, and parameter handling. This arrangement leaves the standard configuration focused on core speed control while reserving physical space for later expansion when an application needs extra interfaces or dedicated field connections.
Frequently Asked Questions about RD51.1-7N-001-L-NN-NN-NN-FW:
Q: What is the input voltage range for the RD51.1-7N-001-L-NN-NN-NN-FW drive controller?
A: The RD51.1-7N-001-L-NN-NN-NN-FW controller operates with a voltage range of 530 to 670 V.
Q: What control type does the RD51.1-7N-001-L-NN-NN-NN-FW drive support?
A: This drive controller uses U/f curve control for variable frequency motor operation.
Q: How is the RD51.1-7N-001-L-NN-NN-NN-FW drive controller cooled?
A: The RD51.1-7N-001-L-NN-NN-NN-FW model features forced air cooling to manage thermal loads during operation.
Q: What type of supply does the RD51.1-7N-001-L-NN-NN-NN-FW require?
A: This unit is supplied as an inverter DC type controller.
Q: Does the RD51.1-7N-001-L-NN-NN-NN-FW drive controller have a built-in brake chopper?
A: The RD51.1-7N-001-L-NN-NN-NN-FW does not include a built-in brake chopper.
