NI 9505 Servo Drive Module

Description

NI 9505 Servo Drive Module

The NI 9505 is a full-bridge servo drive module designed by National Instruments (NI) for use with the CompactRIO (cRIO) platform. It provides a high-performance interface for controlling brushed DC servo motors.

## Product Overview

The NI 9505 is a single-axis, power-efficient motor drive. Unlike traditional drives that require external wiring to a motion controller, the NI 9505 plugs directly into any C Series chassis. It allows developers to implement custom motion control algorithms using LabVIEW FPGA, providing ultra-low latency and high-speed deterministic control.

## Technical Specifications

## Key Advantages

• FPGA Integration: Since it connects directly to the cRIO FPGA, you can write custom control loops (PID, notch filters, etc.) that execute at rates up to 20 kHz.

• Space-Saving Design: Its compact C Series form factor eliminates the need for bulky external motor drivers and extensive cabling.

• Direct Sensor Connectivity: Features built-in inputs for encoders and limit switches, simplifying the wiring for a complete motion system.

• Reliability: Built for industrial environments with high shock and vibration resistance.

## Important Considerations & Precautions

• Power Supply: Ensure the external power supply matches the motor’s voltage requirements and does not exceed 30 VDC. Exceeding this may damage the module.

• Heat Dissipation: While the module is rated for 2 A continuous current, ensure adequate ventilation within the cRIO chassis if operating at high loads or in high-ambient temperatures.

• Fusing: It is highly recommended to use an external fuse between the power supply and the $V_{sup}$ terminal to protect against short circuits.

• Grounding: Proper common-grounding between the NI 9505, the power supply, and the motor is essential to prevent electrical noise and signal integrity issues.

## Product Applications

The NI 9505 is ideal for applications requiring high precision and custom control logic:

1. Robotics: Controlling joints and actuators in autonomous mobile robots or robotic arms.

2. Medical Devices: Precision fluid pumps, scanning beds, or surgical assistance tools.

3. Industrial Automation: Pick-and-place machines, labeling systems, and precision X-Y stages.

4. Hardware-in-the-Loop (HIL): Testing motor controllers or simulating mechanical loads in a real-time environment.

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