KUKA KR 3 AGILUS Operation and Maintenance Safety Essentials

Before putting into operation, the equipment and devices should be checked for completeness and functional integrity. The inspection items include: correct placement and fixation of the robot; No external damage; No foreign objects or damaged, detached, or loose parts; The protective device is correctly installed and functioning properly; The equipment power is consistent with the power supply voltage and grid system; The grounding safety lead and potential balance wire have sufficient capacity and are correctly connected; Connect the cables correctly and lock the plugs. The password used to log in as an expert and manager must be changed before being put into operation.

Common troubleshooting ideas

One of the common problems on site is accidental movement or axis sinking of the robot. Possible reasons include incorrect installation angle recording, failure to input load data, brake failure, motor damage or overload. When troubleshooting, the installation location of WorkVisual, KUKA. Load load data, brake status, and mechanical damage should be checked. If the robotic arm or additional axis collides with obstacles, mechanical end stops, or axis limiting devices, the robot may no longer be able to operate reliably and must stop running and negotiate with KUKA.

The second issue is that the stopping stroke becomes longer or the machine stops abnormally. Should confirm the type of shutdown POV、 Scope of application, load mass, overlap of shaft movement, and inspection of brake wear. If the reason for the shutdown is unknown, it is only allowed to enter the danger zone after the emergency stop function has been activated. The third issue is a faulty connection cable or interface. Plug locking, bending radius, cable separation and laying, electromagnetic compatibility measures, grounding wire connection, and interface sealing should be checked. The fourth issue is that the foundation or frame is loose. Anchor bolts, locating pins, and hexagonal bolts should be checked for torque and re tightened after 100 hours.

Maintenance, repair, and tightening torque

After maintenance and repair, it is necessary to check whether it meets safety requirements and test all safety functions. Maintenance includes fault finding and repair. When doing homework, try to do it outside the danger zone as much as possible; If it is necessary to operate in a hazardous area, the operator must take additional protective measures. Shut down the industrial robot and take measures to prevent restart, such as padlocking. If it is necessary to work while the control system is connected, it is only allowed to operate in T1 mode, and a sign should be hung and emergency stop activation should be maintained. Before working on conductive components, the main switch must be turned off and the power must be verified. It is not enough to only trigger emergency stop, safety stop, or turn off the driving device.

After the robot control system is turned off, some components may still be charged, capacitors may discharge for several minutes, and the voltage may exceed 50V or even up to 600V. ESD regulations must be followed to prevent water and dust from entering the control cabinet. If the balance weight is a hydraulic pneumatic balancer or balance cylinder, it belongs to pressure equipment and must comply with pressure equipment instructions and domestic inspection deadlines. Dangerous goods should be avoided from prolonged skin contact, inhalation of oil mist and gas, and regular requests for safety data explanations.

In terms of tightening torque, unless otherwise specified, the 8.8 grade M8 is about 23.0 Nm, M10 is about 45.0 Nm, and M12 is about 78.0 Nm; the 10.9 grade M8 is about 31.0 Nm, M10 is about 60.0 Nm, and M12 is about 104.0 Nm; the 12.9 grade M8 is about 36.0 Nm, M10 is about 70.0 Nm, and M12 is about 125.0 Nm. The cap nut M5 is tightened at about 4.2 Nm. Bolts with a strength grade equal to or higher than 10.9 and bolts with test certificates can only be tightened once with the rated tightening torque, and must be replaced after being loosened again. Common auxiliary materials include adhesive and sealing materials, Harmonic Drive grease 4B No.2, Longtime PD 0, Microlube GL 261, Optitemp RB 2, etc.

Operation and maintenance suggestions

The stable operation of KR 3 AGILUS relies on standardized installation, correct load data, reliable and safe circuits, and regular maintenance. During the planning phase, it is necessary to avoid working conditions such as prolonged proximity to temperature limits, corrosive environments, power limits, long single axis connection times, monotonous repetitive movements, long-term vertical wrist movements, and external forces. Otherwise, premature wear may occur, and maintenance cycles or component replacements may need to be shortened. When a fault occurs, the control system should be turned off and locked first, with a tag indicating the fault and recording the phenomenon. Then, the safety function, drive, brake, connecting cable, load, and installation angle should be checked item by item. Only by considering mechanical, electrical, control, and safety as a whole can unplanned downtime be reduced and the KR 3 AGILUS maintain a stable rhythm in small handling, processing, and assembly scenarios.