ABBAxodyn DRH 10050 C Servo Drive Amplifier, Single Axis, Configuration S20001

Product Description

What this part is

An Axodyn DRH-10050-C servo drive amplifier, configuration S20001. The Axodyn range originated with BBC Brown Boveri in Germany and carried through the Brown Boveri to ABB transition, so these units are found badged BBC, BBC Brown Boveri, Brown Boveri and ABB, all the same family. This is the axis amplifier: it accepts a speed or torque reference from the machine control and delivers regulated current to one servo motor, closing the velocity loop against the motor’s own feedback device. It is a servo drive amplifier, not a general-purpose VFD for a squirrel-cage induction motor and not a motion controller that generates position profiles. Path generation and interpolation stay with the CNC or motion controller upstream.

Decoding the order code

DRH is the Axodyn servo drive amplifier series. Stablemates in the range carry different prefixes for different roles: DSH and DSR designate other Axodyn control and regulator units, so a DRH is not interchangeable with a DSH or DSR. 10050 is the frame and rating designation within the DRH series, and it fixes what motor the unit can drive. A DRH-02050 is the same series at a different frame and rating, and the two are not substitutes. C is the hardware variant or generation letter. S20001 is the configuration or software suffix; on Axodyn units this suffix carries the commissioning configuration, so two units with the same DRH frame and different S-numbers can behave differently on the same machine.

Matching criteria

Four items decide whether a swap works on a servo amplifier of this generation. The frame designation sets the current rating, which has to suit the motor. The feedback type the amplifier expects matters: resolver and tachogenerator feedback were both common on Axodyn-era drives, and an amplifier expecting one will not commutate correctly on the other. The reference interface matters, typically an analog speed reference on drives of this vintage. The configuration suffix carries the machine-specific setup. A drive that matches on three of the four will still fault.

Published specifications

Function: servo drive amplifier, single axis. Family: Axodyn, BBC Brown Boveri / ABB. Frame designation: DRH 10050. Hardware variant: C. Configuration suffix: S20001. Motor type: servo motor, not an induction-motor VFD. Loop closed by the amplifier: velocity and current, against motor feedback. Country of manufacture: Germany.

Braking arrangement

A servo amplifier decelerating an inertial load returns energy to its DC link. On drives of this class that energy is dissipated in a braking resistor, and the braking resistor is a separate item not supplied with this unit.

Mounting data

The DC link capacitors hold charge after isolation. The outgoing amplifier carries jumper and link settings that form part of the machine-specific configuration. Motor cables are screened and separated from signal wiring, since an unscreened servo motor cable injects noise into the feedback path.

Quantity and configuration

One amplifier module. Not included: the servo motor, resolver or tachogenerator, motor power and feedback cables, connector kits, braking resistor, line reactor or filter, mains contactor, mounting hardware, and commissioning documentation.

Interchange guidance

The complete designation is the ordering reference. DRH-02050-C-S20001 is the same series and variant letter at a different frame rating, a related item rather than an equivalent, and substituting one for the other mismatches the motor. DSH and DSR units are different Axodyn products. Also written DRH10050CS20001, DRH 10050 C S20001, DRH-10050-C, DRH 10050, Axodyn DRH 10050, and found under the BBC, BBC Brown Boveri, Brown Boveri, BBC Alsthom and ABB brand names.