KUKA LBR iisy 3 R760 Collaborative Robot Debugging Guide

KUKA LBR iisy 3 R760 Collaborative Robot Debugging Guide

Introduction: The Engineering Value of the New Generation Collaborative Robots

KUKA LBR iisy 3 R760 is a new generation of lightweight industrial robot designed for human-machine collaboration scenarios. It has a rated load of 3kg, a maximum working radius of 760mm, and a body weight of only about 22.8kg. The robot adopts a 6-axis articulated design, with all drive units and current carrying cables built into the body. The protection level is IP30, and it supports installation on the ground, walls, ceilings, and at any angle (± 180 ° tilt angle).

Unlike traditional industrial robots, LBR iisy integrates sensors on each axis - axis range sensors ensure compliant motion range, torque sensors monitor load limits, and temperature sensors protect electronic devices. The Commander interface is located on the wrist and integrates a hand guided handle, jog dial, enable switch, and back button, supporting direct drag teaching. This robot is compatible with KR C5 micro controller and runs KUKA iiQKA.OS system software. This article is based on the official assembly manual of KUKA, systematically sorting out the technical points of the entire process from mechanical installation, electrical connection, toothed belt maintenance to shell replacement, helping engineers quickly master the deployment and maintenance of the robot.

Overview and Technical Parameters of Product Series

2.1 Basic Parameters

Parameter specifications

Number of axes 6 (all controlled)

Work envelope volume 0.88 m ³

Pose repeatability accuracy ± 0.1 mm

The weight of the body is about 22.8 kg

Rated/maximum load 3 kg/3.34 kg

Maximum working radius 760 mm (including output flange)

Protection level IP30 (whole machine and wrist)

Noise level<75 dB (A)

Controller KR C5 micro

Installation location: Ground, wall, ceiling, any angle

Base hole type C184 (installation circle diameter 210mm)

2.2 Axis motion data

Motion range: A1 ± 185 °, A2-230 °/50 °, A3 ± 150 °, A4 ± 175 °, A5 ± 110 °, A6 ± 220 °. The speed parameters are very impressive: A1~A3 are all 200 °/s, A4~A5 reach 300 °/s, and A6 is as high as 400 °/s, making the robot highly responsive in light load assembly and inspection scenarios.

2.3 Environment and Installation Conditions

The working temperature is 5-45 ℃, the storage/transportation temperature is -25~70 ℃, and the operating humidity is 20%~80%. The installation base is of C184 hole type (bolt circle diameter 184mm), and the base occupies an area of approximately 210mm circular. The robot supports installation at any angle, but when not installed on the ground, the tilt angle parameters (A, B, C directions) must be correctly configured through the system software, otherwise it may cause unforeseeable motion or overload. In addition, special attention should be paid to the possibility of losing control of internal electrical connections when operating in conductive dirt or condensation environments. Therefore, the installation site must prevent conductive contamination and condensation.

Mechanical installation and rack installation

3.1 Rack Installation Components

LBR iisy adopts the machine frame mounting method to fix the robot on the steel frame, elevated seat or KUKA linear guide prepared by the customer. The installation kit (article number 0000-204-931) includes:

4 M8 × 30-8.8-A2K hexagon socket screws (with disc spring washers)

1 cylindrical positioning pin and 1 flat positioning pin (ensuring precise alignment)

8 M24 × 65-8.8-A2K hex bolts (used for fixing the base)

3.2 Installation steps

Clean the installation surface: Remove grease, rust, or adhesives.

Check hole position: Confirm that the hole position on the installation surface matches the base hole type.

Installation positioning pin: Rotate the cylindrical and flat positioning pins into the installation surface and check the firmness.

Lifting robot: Use lifting equipment to move the robot to the installation position and maintain an absolute vertical descent to prevent damage to the positioning pin.

Placed in place: The robot base aligns with the positioning pin and slowly descends until it fully fits.

Insert screws: Install 4 M8 × 30-8.8-A2K hex socket screws with disc spring washers.

Diagonal incremental tightening: Use a torque wrench to gradually increase the torque to the specified level (M8 8.8, approximately 23 Nm).

3.3 Foundation load verification

The force and torque generated by the robot's motion will be transmitted to the foundation. Taking ground installation as an example:

Normal vertical force F (v normal)=280N, maximum F (v max)=530N

Horizontal force F (h normal)=120N, maximum F (h max)=530N

Tilt moment M (k normal)=100Nm, maximum M (k max)=380Nm

The installation foundation must be able to permanently withstand these loads. Improper foundation design may lead to structural failure. The specified installation equipment should be used in the project, and the load should be calculated according to each specific working condition.

Electrical connections and interface definitions

4.1 Overview of Connecting Cables

The robot is connected to the KR C5 micro controller through two sets of main cables: