KUKA KR C5 slim-2 Robot Controller

Maintenance and module replacement

Maintenance must be carried out after the controller is turned off, the tag is locked, and the power cable is unplugged. After a power outage, there may be residual voltage of 60 to 800 V in the intermediate circuit for up to 5 minutes, and at least 5 minutes must be waited for. KSP、 Motor connectors and connected motor cables may remain energized. The homework must comply with ESD regulations. Maintenance table requirement: Conduct annual cyclic functional testing on operational safety and all emergency stop devices; Test all enable switches; Test external enabling devices; Test the Drives ready light before entering the danger zone each time; Clean the fan protective grille according to the degree of pollution; Replace the system board battery every 10 years. Check if the plug connection is secure and inspect all system components for wear or damage.

Module replacement includes: cleaning cooling fins, replacing system board batteries, replacing interface board fuses, replacing CSP cables, replacing IFBsafe, IFBsafext, IFBstd, NextGen system board, KAI board, connection board between power units and system boards, fans, power units, USS compact interface board, Ethernet expansion board. General steps: Turn off the main switch and prevent restart; Open the cabinet door; Disconnect the front plug; Unscrew 2 M5x20 screws and remove the guide rail; Remove the controller and be aware of the risk of compression of approximately 25 kg; Disconnect the rear plug; Open the housing cover and unscrew 8 M3x8 TORX screws; Replace components; Install the housing cover and tighten to a torque of 0.8 Nm; reinstall the controller and connect the plug; Close the cabinet door; Power on inspection. After replacing the system board battery, you need to plug in the USB keyboard, enter the BIOS to set the date and time, load the default values, and perform a functional test. The same amperage value must be used to replace the fuse. When replacing the NextGen system board, pay attention to the vertically installed connection board and do not tilt or damage it. When replacing the power unit, multiple boards and connection boards need to be removed in the correct order.

Common troubleshooting: Starting from power supply, safety chain, communication chain, and cooling chain

Unable to power on. Check XD1 power supply, line side fuse 3 × 10A to 3 × 16A slow melting, main switch, equipment switch, XD2 UPS power supply, and battery. If the control PC does not start, check the NextGen system board, internal fan, SSD, and recovery stick. When the startup sequence is abnormal, check if an external hard drive is inserted.

The safety stop cannot be reset. Check the emergency stop of the teaching pendant, external emergency stop, additional emergency stop, XG11.1 and XG58 dual channel status, operation safety signal, safety door, enable switch, and safety configuration. After triggering the safety stop 1, it is necessary to confirm that all axes have stopped and the brakes have been applied; After triggering the safety stop 0, it is necessary to check whether the driving and braking power supply has been cut off. If the security ID changes, the security configuration must be rechecked and security acceptance must be conducted.

The enable switch is invalid. Check the teaching pendant enable switch smartPLUG、 External enabling device, XG58 wiring, T1/T2 mode. The enable switch must be in the middle position to move; Releasing or fully pressing will trigger safety stop 1. The notebook mode without smartPLUG requires a Motion enable external switch, which is not a safety function.

The load voltage of USS 2 is abnormal. Check XG11.2 control, US2 compact interface board, XD56 load voltage output, XG57. x auxiliary contacts, XD6/XD6.1 power supply. US2 can be switched or disabled by external PLC, robot controller. If USS 2 cannot be turned off, it may cause unexpected actions of the actuator. It is necessary to regularly check the functionality of the USS 2, including initial startup, robot changes, security configuration changes, software updates, replacement of the USS interface board, and at least once a year.

Communication interruption. Check the KSI, KLI, KLI2, OSI, KEI, and KAI interfaces to confirm that KSI is not connected to the IT network, KLI is wired correctly, EtherCAT equipment is configured, cable length does not exceed 100 meters, and XG12 power supply is normal. If replacing the data cable, it is necessary to re master or perform a mastering test on all axes.

Cooling malfunction. Check the fan, protective grille, cooling fins, air inlet and outlet, ambient temperature, and installation spacing. Compressed air is prohibited during cleaning, water spraying is prohibited, solvent-free, water-soluble, non flammable, non corrosive cleaning agents are used, and they must not enter electrical components.

Battery malfunction. The system board battery is CR2032 and is replaced every 10 years. Set BIOS date and time after replacement. Battery failure may result in system time errors or configuration loss.

Recovery and mirroring. If the system cannot start, you can use the recovery USB to restore the image. After recovery, check the settings and perform functional testing. If replacing the SSD or system board, it is necessary to confirm that the operating system image and robot data are complete.