SAM-DA-400-28B-P4N-F Danaher
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The Danaher SAM-DA-400-28B-P4N-F servo amplifier is part of the SAM Servo Amplifiers series and features a rated output current of 28 Amps. It supports 24 VDC brake control and control supply voltages and comes equipped with a single 7-segment display. The amplifier uses EasyBus fiber optic communication and provides three motor output phases.
Internal Product Review
The SAM-DA-400-28B-P4N-F servo amplifier from Danaher delivers dependable performance with a 28 A rated output current and triple-phase motor output, meeting the needs of demanding motion applications. The EasyBus fiber optic communication interface ensures reliable data transfer and simplified network integration. This amplifier stands out for its high output capability and straightforward connectivity.
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Product Description:
The SAM-DA-400-28B-P4N-F servo amplifier is produced by Danaher and belongs to the SAM Servo Amplifiers series. It conditions DC-bus power and command signals so that a three-phase brushless motor receives regulated current for velocity and torque control in automated machinery. The unit interfaces with higher-level motion controllers, controls dynamic braking devices, and offers integrated safety inputs to simplify panel design in material-handling, packaging, and assembly lines. It is intended for installation inside multi-axis cabinets where fiber-optic communication supports distributed control architectures and reduces exposure to electrical interference.
The amplifier exchanges real-time set points over the EasyBus fiber-optic channel, isolating the control electronics from electrical noise and allowing long daisy-chain distances without signal degradation. Internal logic is powered by a 24 VDC control rail, so field I/O can share a common supply with other motion modules. The output stage provides up to 28 A of continuous phase current to the motor windings. Its power stage supplies three sinusoidal phases to support compatible permanent-magnet servo motors. Status and fault codes appear on a single seven-segment display, allowing basic diagnostics to be performed without external tools.
The integrated brake driver accepts 24 VDC, allowing an electromechanical holding brake to be released in synchronization with the drive-enable signal. Logic-side peripherals remain operational at voltages as low as 19.2 VDC, helping maintain control functions during voltage drops at machine startup. Network addressing is configured through two rotary switches, allowing bus identifiers to be assigned without software. The DC link is accessed through +/−/PE terminals, which provide dedicated connections for positive voltage, negative voltage, and protective earth while supporting an organized electromagnetic compatibility layout. Additional terminals include the X13 motor temperature input and dual 24 V safety-rated Stop0 and Stop1 circuits. These connections allow the amplifier to process motor thermal feedback and redundant shutdown signals directly without routing them through separate interface modules.
