Scheduled Maintenance for the NexBot Robotics LA013-001 Robot Arm

Related Products

Tools Required

• Lockout/Tagout (LOTO) kit
• Personal Protective Equipment (PPE)
• Torque wrench (metric)
• Metric socket set
• Grease gun
• Lint-free cloths
• Screwdriver set

Article

Overview

Regular preventive maintenance is critical to ensure the long-term reliability, safety, and peak performance of your NexBot Robotics LA013-001 6-Axis Robot Arm. This document outlines the standard annual maintenance schedule and procedures. Adhering to this schedule will minimize unplanned downtime and extend the operational life of the equipment. This procedure should only be performed by certified technicians familiar with the LA013-001 robot and its associated safety systems.

Safety Precautions

WARNING: The NexBot Robotics LA013-001 is a powerful industrial machine capable of causing severe injury or death. All maintenance procedures must be performed with the robot and controller powered down and locked out.

• Lockout/Tagout (LOTO): Before beginning any work, completely de-energize the robot system. Apply a lock and tag to the main electrical disconnect for the robot controller according to your facility's LOTO procedures.
• Release Stored Energy: Ensure all pneumatic, hydraulic, and electrical energy is discharged. Verify zero energy state before proceeding.
• Personal Protective Equipment (PPE): Wear appropriate PPE, including safety glasses, steel-toed boots, and gloves.
• Robot Motion: Never enter the robot's work envelope unless the system is properly locked out. Be aware that the arm may drift downward when brakes are released on certain axes.

Maintenance Schedule

• Daily: Visually inspect the robot arm and its cabling for any obvious damage, leaks, or loose connections. Check the teach pendant for proper function.
• Monthly: Check for grease leakage at all axis joints (J1-J6). Inspect the integrity of end-of-arm tooling (EOAT) and its mounting.
• Annually: Perform the complete procedure detailed below.

Annual Maintenance Procedure

Step 1: Inspection

1. Mechanical Inspection:

• Thoroughly inspect the entire robot structure for signs of impact, stress fractures, or other physical damage.
• Check all external bolts and fasteners for proper torque. Pay close attention to the base mounting bolts that secure the robot to the floor or pedestal. Refer to the installation manual for specific torque values.
• Inspect the mechanical hard stops on all axes for signs of wear or damage.

1. Cable and Hose Inspection:

• Examine all external cables and pneumatic hoses for wear, abrasion, cracks, or kinks. Ensure they are properly secured in their dress packs and do not bind or stretch during robot motion.
• Check all cable connectors at the robot base and controller to ensure they are secure and free of contamination.

1. Grease Leakage Inspection:

• Carefully inspect the seals and housings of each axis joint (J1, J2, J3, J4, J5, J6) for evidence of grease or oil leakage. Minor seepage may be normal, but significant leakage requires further investigation and potential seal replacement.

Step 2: Encoder Battery Replacement

The axis encoders are powered by a battery to retain position data when the controller is powered off. This battery must be replaced annually to prevent loss of mastering data (Error Code E-4502: Encoder Position Lost).

1. Ensure the robot controller is powered OFF and locked out.
2. Locate the battery compartment on the base of the LA013-001 robot. It is typically a small cover secured with two screws.
3. Carefully remove the cover.
4. Disconnect the old battery pack (P/N: NXB-GEN-712-001) from its connector. Do not pull on the wires.
5. Install the new battery pack, ensuring the connector is fully seated and the polarity is correct.
6. Secure the battery pack within the compartment and reinstall the cover.

Note: This procedure should ideally be performed with the controller power on to avoid losing mastering. However, if facility safety rules mandate a full LOTO, you must be prepared to re-master the robot after the procedure is complete.

Step 3: Axis Lubrication

Proper lubrication is essential for the longevity of the robot's gear reducers.

1. Clean all grease fittings (zerks) on each robot axis to prevent contamination.
2. Using a manual or pneumatic grease gun, apply the specified grease (P/N: NXB-GEN-713-001) to each fitting.
3. Consult the LA013-001 service manual for the exact number of pumps required for each axis, as volumes vary between the major and minor axes.
4. After applying grease, use a lint-free cloth to wipe away any excess from the fitting and surrounding area.

Parts and Tools

Parts Needed

• Encoder Battery Pack: NXB-GEN-712-001
• Robotic Axis Grease: NXB-GEN-713-001
• Lint-free cloths

Tools Required

• Lockout/Tagout (LOTO) kit
• Standard Personal Protective Equipment (PPE)
• Metric socket and wrench set
• Torque wrench
• Grease gun (manual or pneumatic)
• Screwdriver set

Verification

1. Remove all tools and equipment from the robot's work cell.
2. Double-check all connections and ensure all covers are reinstalled and secured.
3. Following safety procedures, remove the LOTO and power on the robot controller.
4. Check the teach pendant for any new alarms. If you replaced the battery with the power off, you will likely need to re-master the robot.
5. In T1 (Teach) mode, jog each axis slowly through its full range of motion to distribute the new grease and ensure there is no binding or unusual noise.
6. Run a familiar production program at a slow speed (e.g., 10% override) to confirm normal operation.
7. Return the robot to service and document the completed maintenance in your facility's maintenance log.

Keywords