How to Install the NexBot Robotics MD132-001 Multi-Axis Servo Drive

Related Products

Tools Required

• Calibrated torque screwdriver
• Set of insulated screwdrivers (Phillips and flat-head)
• Wire stripper and crimper
• Digital multimeter
• Anti-static wrist strap
• Mounting hardware (M4 screws)

Article

This document outlines the standard procedure for installing the NexBot Robotics MD132-001 Multi-Axis Servo Drive (SKU: NXB-SRV-MD132-001). Proper installation is critical for ensuring system safety, performance, and reliability. This guide is intended for qualified technicians familiar with industrial robotics and control cabinet assembly.

Prerequisites

Before beginning the installation, ensure you have the following components, tools, and environmental conditions met.

Safety Precautions:

• Disconnect and lock out all power sources to the control cabinet before installation.
• Use appropriate personal protective equipment (PPE), including safety glasses and anti-static protection (e.g., an ESD wrist strap).
• The MD132-001 operates at 400VAC. This voltage is hazardous and can cause severe injury or death. All electrical work must be performed by certified personnel.

Required Components:

• 1x NXB-SRV-MD132-001 Multi-Axis Servo Drive
• Appropriate mounting hardware (e.g., M4 screws)
• Shielded EtherCAT communication cables (e.g., NXB-CBL-NET522-002)
• Shielded motor power and encoder feedback cables (e.g., NXB-CBL-512-002)
• Suitably gauged wiring for 400VAC power input.

Environmental Requirements:

• The installation location must be clean, dry, and free from corrosive gases, excessive dust, and vibration.
• The drive has an IP20 rating and must be installed within a protective control cabinet.
• Ensure ambient temperature within the cabinet remains within the operating range specified in the product's technical manual.

Step-by-Step Installation Instructions

Follow these steps carefully to ensure correct installation.

Step 1: Mechanical Mounting

The MD132-001 drive is designed for vertical mounting on a flat, conductive backplane inside a control cabinet to ensure proper heat dissipation.

1. Select Location: Choose a mounting location that respects the drive's dimensions (220 x 75 x 180 mm).
2. Ensure Clearance: Maintain a minimum clearance of 50 mm above and below the drive and 10 mm on the sides to allow for adequate airflow and cooling. Do not block the ventilation slots.
3. Secure the Drive: Use four M4 screws to securely fasten the drive to the cabinet backplane. Ensure the backplane provides a good electrical connection for grounding.

Step 2: System Grounding

Proper grounding is essential for operator safety and minimizing the effects of electromagnetic interference (EMI).

1. Locate the Protective Earth (PE) terminal on the drive's power connector (X1).
2. Connect this terminal to the main system ground or the cabinet's PE bus bar using a low-impedance conductor. Use the shortest possible wire length.

Step 3: Power Wiring

1. Main Power: Connect the 3-phase 400VAC power supply to terminals L1, L2, and L3 on the X1 power input connector. Ensure the incoming power is correctly phased and within the drive's specified voltage range.
2. DC Bus Linking (Optional): If linking the DC bus with other drives, follow the specific instructions in the advanced technical manual.
3. 24VDC Control Power: Connect the 24VDC control power supply to the designated terminals on the X1 connector. This power is required for the drive's logic circuits.
4. Torque Terminals: Use a calibrated torque screwdriver to tighten all power terminals to the manufacturer's specified torque value to ensure a secure and reliable connection.

Step 4: Motor and Encoder Connections

The MD132-001 supports two motor axes, typically used for robot joints J1, J2, or J3.

1. Motor Power (Axis 1 & 2): Connect the motor phase wires (U, V, W) for the first motor to the X2 connector and for the second motor to the X3 connector. Ensure the phase sequence is correct.
2. Motor Brake (Axis 1 & 2): If the motors are equipped with holding brakes, connect the brake control wires to the designated terminals on the X2 and X3 connectors.
3. Encoder Feedback (Axis 1 & 2): Connect the shielded encoder feedback cables from the motors to the X4 (Axis 1) and X5 (Axis 2) encoder connectors. Compatible encoders include the NXB-SNS-ENC521-002. Ensure the cable shield is properly terminated at the drive connector for EMI immunity.

Step 5: Control and Communication Wiring

1. EtherCAT Communication: The drive uses EtherCAT for real-time control. Connect the incoming EtherCAT cable from the master or previous slave device to the X6 IN port. Connect the outgoing cable to the next device in the chain using the X6 OUT port. Use high-quality shielded cables like the NXB-CBL-NET522-002.
2. Safety Circuits (STO): The drive includes a Safe Torque Off (STO) function. Wire the dual-channel STO inputs (STO1, STO2) on the X7 connector to the robot's safety controller according to your system's safety design (e.g., EN ISO 13849-1).

Verification

After completing all wiring, perform the following checks before applying full system power.

1. Wiring Inspection: Double-check all connections against the wiring diagrams in the technical manual. Verify correct polarity, terminal assignments, and tightness.
2. Initial Power-Up: Apply 24VDC control power only. The drive's status LED should illuminate. Verify that no fault codes are immediately present.
3. Main Power Application: Once control power is stable, apply the 400VAC main power. Observe the drive's status LEDs. A solid green 'POWER' and 'RUN' LED typically indicates a healthy state.
4. Network Verification: Using the robot controller's commissioning software, verify that the MD132-001 drive is detected on the EtherCAT network and that its status is reported as operational ('OP' state). Address any network configuration errors before proceeding.

Once these verification steps are successfully completed, the drive is ready for software commissioning, parameterization, and tuning.

Keywords