SAM-DA-400-04N-P1N-D Danaher
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The Danaher SAM-DA-400-04N-P1N-D is a servo amplifier from the SAM Servo Amplifiers series, supporting a 3-phase motor output and resolver feedback. It features a fiber optic bus medium with closed ring topology and accommodates up to 127 axes per system. The amplifier uses logic and auxiliary supplies of 24 VDC and 19.2 VDC and provides status through a 1-character 7-segment display and 4 LED error indicators.
Internal Product Review
The SAM-DA-400-04N-P1N-D is a Danaher servo amplifier with 3-phase motor output and resolver feedback. Fiber optic communication on a closed-ring topology supports stable network performance in coordinated motion systems. A 24 VDC logic supply adds straightforward control integration, making the unit a strong choice for multi-axis servo applications.
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Product Description:
The SAM-DA-400-04N-P1N-D is an axis amplifier module manufactured by Danaher for the SAM Servo Amplifiers series. Designed for multi-axis motion platforms, the module accepts motion commands over a fiber-optic fieldbus and sends three-phase drive signals to brushless motors. Within an automation cell, the unit conditions current, monitors thermal loads, and participates in safety stop chains, allowing coordinated velocity and torque control of each axis. It interfaces with resolver feedback to close the position loop and uses internal diagnostics to protect connected hardware.
The control electronics are powered by a 24 VDC logic rail, while an auxiliary input may fall as low as 19.2 VDC without loss of function. Network traffic travels over a fiber-optic bus wired in a closed ring, so a single break does not isolate the node. The onboard CPU pulses a watchdog at 2 Hz, and the absence of that cadence triggers a fault latch. Operating status appears on a single-character, seven-segment display, while four dedicated LEDs indicate error categories. Two rotary knobs on the front panel set the node address, allowing configuration without software tools. Low-active safety-stop logic allows external relays to activate an immediate torque-off path.
At power-up, the amplifier requires 15 s to complete its self-test before enabling the drive outputs. A single controller can supervise up to 127 axes, and the closed-ring bus maintains deterministic update times as the network approaches that limit. The power stage produces a three-phase motor output synchronized with resolver feedback received through connector X24. Motor temperature monitoring trips the drive if the winding resistance exceeds 500 ohms, causing the affected channel to shut down. The seven-segment display provides local status information during startup and operation. Initialization timing is coordinated with the watchdog signal to detect sequencing errors and prevent the drive outputs from being enabled incorrectly.
