KUKA KR QUANTEC-2 Maintenance Troubleshooting Guide

KUKA KR QUANTEC-2 Maintenance Troubleshooting Guide

The KUKA KR QUANTEC-2 series is a six axis articulated robot designed for medium to high load handling, palletizing, processing, and assembly scenarios, covering KR 120 R2700-2、KR 120 R3100-2、KR 150 R2700-2、KR 150 R3100-2、KR 180 R2900-2、KR 210 R2700-2、KR 210 R3100-2、KR 240 R2900-2、KR 250 R2700-2、KR 300 R2700-2  Equivalent models and derived variants such as C01, F, and C. Among them, C01 corresponds to a specific drive chain configuration, F is the casting environment enhanced protection version, and C is the top mounted version. For on-site engineers, mastering the transportation posture, installation specifications, oil change cycle, balance cylinder pressure inspection, motor replacement, and troubleshooting are key to ensuring the stable operation of the production line.

Model Identification and Basic Data Quick Search

The KR QUANTEC-2 adopts a six axis articulated arm motion system, which can control six axes. The differences between different models mainly lie in rated load, maximum arm span, and cycle time. KR 120 R2700-2 has a rated load of 120 kg, a maximum load of 167 kg, a maximum arm span of 2701 mm, a body weight of approximately 1069 kg, a pose repeatability accuracy of ± 0.05 mm, a protection level of IP65, and an optional wrist protection level of IP67. The controller supports KR C4, KR C5 M6/M7, and KR C5-2 M6/M7. KR 120 R3100-2 has a maximum arm span of 3100 mm and a maximum load of 210 kg, weighing approximately 1105 kg. KR 150 R2700-2 has a rated load of 150 kg, a maximum load of 218 kg, and a weight of approximately 1072 kg. KR 150 R3100-2 has a maximum load of 220 kg, weighing approximately 1105 kg. KR 180 R2900-2 has a rated load of 180 kg, a maximum load of 253 kg, and a weight of approximately 1105 kg. KR 210 R2700-2 has a rated load of 210 kg, a maximum load of 275 kg, and a weight of approximately 1077 kg. KR 210 R3100-2 has a maximum load of 281 kg, weighing approximately 1134 kg. KR 240 R2900-2 has a rated load of 240 kg, a maximum load of 319 kg, and a weight of approximately 1120 kg. KR 250 R2700-2 has a rated load of 250 kg, a maximum load of 315 kg, The weight is approximately 1101 kg. The KR 300 R2700-2 has a rated load of 300 kg, a maximum load of 370 kg, and a weight of approximately 1101 kg.

In terms of axis data, A1 has a motion range of ± 185 °, A2 is -140 °/-5 °, A3 is -120 °/168 °, A4 ± 350 °, A5 is mostly ± 122.5 ° or ± 125 °, A6 ± 350 °. The rated load speed of different models varies slightly, for example, A1 of KR 120 R2700-2 is about 120 °/s, A2 is about 115 °/s, A3 is about 120 °/s; A1 of KR 300 R2700-2 is about 105 °/s, A2 is about 101 °/s, A3 is about 107 °/s. The zero calibration position is usually A1-25 °, A2-100 °, A3 100 °, A4 0 °, A5 0 °, A6 0 °. The load center of gravity and inertia must be input into the controller, otherwise trajectory planning and dynamic performance will deviate from expectations.

In terms of environmental conditions, the standard operating temperature is 0 ° C to 55 ° C, and the storage and transportation temperature is -40 ° C to 60 ° C. Low temperature operation may require preheating and avoid condensation and frost. ESD requirements comply with IEC 61340-5-1 and ANSI/ESD S20.20. The noise level is below 75 dB (A). The installation location can be on the ground or ceiling, depending on the model. The foundation load, flange load, and supplementary load must be calculated according to the model, load center of gravity, and inertia.

Safety logic and homework prerequisites

KR QUANTEC-2 belongs to incomplete machinery and must be integrated into a complete system and meet the EU Machinery Directive before it can be put into operation. The system integrator is responsible for risk assessment, implementation of safety functions, CE labeling, and complete system operation manuals. The danger zone consists of a workspace and a stopping distance, where the stopping distance is equal to the reaction distance plus the braking distance. The safety protection device must be located outside the danger zone, but the robot stopping process may still be completed within the danger zone.

The manual operation mode is divided into T1 and T2. T1 is the manual slow debugging mode, with a speed not exceeding 250 mm/s, suitable for jogging, teaching, programming, and program verification. T2 is a manual quick debugging mode that allows for speeds exceeding 250 mm/s, but is only used for testing that requires speeds higher than T1. Teaching and programming are not allowed under T2. When multiple people enter a safe area, each person must be equipped with an enabling device, and everyone must be able to see the robot unobstructed and maintain mutual visibility. Automatic mode requires all safety protection devices to function properly, with no one in the hazardous area, or to meet the EN ISO 10218 cooperation requirements.

When maintaining and repairing, priority should be given to working outside of hazardous areas. When it is necessary to enter a dangerous area, the robot should be turned off and locked with a tag, and if necessary, it should be done under T1. The emergency stop device must remain effective. If the security function is temporarily disabled, it must be restored immediately after the work is completed. After the robot controller is turned off, some components may still carry a voltage of 50V to 780V for several minutes, and must wait for discharge and comply with ESD regulations. For controllers with transformers, the transformer should be disconnected before operation. The balance cylinder belongs to pressure equipment, and the pressure status must be confirmed before operation and operated by professional personnel.