What is CCU?
It is the most important port in the KUKA robot control system and is also the most prone to failure. It can be said that all electrical components’ distribution devices and communication interfaces, as well as all communication data, must pass through here for transmission to the control system.
Below is a list of some English abbreviations found inside the KRC4 control cabinet, or you can refer to it when encountering some unfamiliar abbreviations.
1. First, take a look at the electrical hardware layout inside the KRC4 control cabinet
| 1. Power Filter | 9. CCU |
| 2. Main Switch | 10. SIB/SIB Expansion Type |
| 3. CSP | 11. Fuse Element |
| 4. Control System PC | 12. Battery |
| 5. Drive Power Supply | 13. Terminal Board |
| 6. Axis 4 to 6 Drive Module | 14. Roller Accessory Group (Optional) |
| 7. Axis 1 to 3 Drive Module | 15. KUKA smartPAD |
| 8. Brake Filter |
2. The main terms of the KUKA control system KRC4 are as follows:
|
Term |
Description |
|
CCU |
Cabin Network Control Unit (Cabinet Control Unit) |
|
CSP |
Controller System Panel |
|
EDS |
Electronic Data Storage |
|
EMD |
Electronic Mastering Device |
|
EMC |
Electromagnetic Compatibility |
|
KCB |
KUKA Controller Bus |
|
KCP |
KUKA Control Panel |
|
KLI |
KUKA Line Interface |
|
KOI |
KUKA Operator Panel Interface |
|
KPC |
KUKA Control PC |
|
KPP |
KUKA Power Pack |
|
KRL |
KUKA Robot Language |
|
KSP |
KUKA Servo Pack |
|
Term |
Description |
|
KSB |
KUKA System Bus |
|
KSI |
KUKA Service Interface |
|
OPI |
Operator Panel Interface |
|
PMB |
Power Management Board |
|
RCD |
Residual Current Device |
|
RDC |
Resolver Digital Converter |
|
SATA |
Serial Advanced Technology Attachment |
|
SIB |
Safety Interface Board |
|
SION |
Safety Input Output Node |
|
USB |
Universal Serial Bus |
|
UPS |
Uninterrupted Power Supply |
|
KSS |
KUKA System Software |
|
KEB |
KUKA Extension Bus |
3. The following is a diagram of the CCU:
4. CCU interface function interface
|
Serial Number |
Plug |
Description |
|
1 |
X14 |
External Fan Interface |
|
2 |
X308 |
External Power Supply for Safety Circuit |
|
3 |
X1700 |
PCB Connector |
|
4 |
X306 |
SmartPAD Power Supply |
|
5 |
X302 |
SIB Power Supply |
|
6 |
X3 |
KPP1 Power Supply |
|
7 |
X29 |
EDS Storage Card Interface |
|
8 |
X30 |
Ballast Temperature Monitor |
|
9 |
X309 |
Main Contactor 1 (HSn, HSRn) |
|
10 |
X312 |
Main Contactor 2 (HSn, HSRn) |
|
11 |
X310 |
Options (Safety Input 2/3, Safety Output 2/3) |
|
12 |
X48 |
SIB Safety Interface (Orange) |
|
13 |
X31 |
KPC Control System Bus (Blue) |
|
14 |
X32 |
KPP Control System Bus (White) |
|
15 |
X311 |
Safety Input, External Confirmation Device; Emergency Stop Button on Cabinet |
|
16 |
X28 |
Adjustment Positioning |
|
17 |
X43 |
KUKA Service Interface (KSI) (Green) |
|
18 |
X42 |
KUKA smartPAD Operator Panel Interface (Yellow) |
|
19 |
X41 |
KUKA System Bus KPC (Red) |
|
20 |
X44 |
EtherCAT Interface (KUKA Extension Bus) (Red) |
|
Serial Number |
Plug |
Description |
|
21 |
X47 |
Reserved (Yellow) |
|
22 |
X46 |
KUKA System Bus RoboTeam (Green) |
|
23 |
X45 |
KUKA System Bus RoboTeam (Orange) |
|
24 |
X34 |
Control Bus RDC (Blue) |
|
25 |
X33 |
Option Control Bus (White) |
|
26 |
X25 |
Fast Measurement Input 7, 8 |
|
27 |
X23 |
Fast Measurement Input 1, 6 |
|
28 |
X11 |
Model Contacts of Main Switch |
|
29 |
X26 |
Transformer Thermal Effect Automatic Switch |
|
30 |
X27 |
Cooler Signal Contacts |
|
31 |
X5 |
KPP2 Power Supply |
|
32 |
X22 |
Cabinet Lighting |
|
33 |
X4 |
KPC Power Supply |
|
34 |
X307 |
CSP Power Supply |
|
35 |
X12 |
USB |
|
36 |
X15 |
Internal Fan (Optional) |
|
37 |
X1 |
Powered by Low Voltage Power Box |
|
38 |
X301 |
24V Non-buffered Reserved |
|
39 |
X6 |
24V Non-buffered Option |
|
40 |
X305 |
Battery |
|
41 |
X21 |
RDC Power Supply |
5. The distribution diagram of the fuses on the CCU is as follows:
|
Serial Number |
Name |
Description |
Fuse |
|
1 |
F17.1 |
CCU Contactor Output 1-4 |
5A |
|
2 |
F17.2 |
CCU Input |
2A |
|
3 |
F17.4 |
CCU Safety Input |
2A |
|
4 |
F17.3 |
CCU Logic Circuit |
2A |
|
5 |
F306 |
SmartPAD Power Supply |
2A |
|
6 |
F302 |
SIB Power Supply |
5A |
|
7 |
F3.2 |
KPP1 Non-buffered Logic Circuit |
7.5A |
|
8 |
F3.1 |
KPP1 Non-buffered Brake |
15A |
|
9 |
F5.2 |
KPP2 Non-buffered Logic Circuit |
7.5A |
|
10 |
F5.1 |
KPP2 Non-buffered Brake |
15A |
|
11 |
F22 |
Distribution Box Lighting (Optional) |
2A |
|
12 |
F4.1 |
KPC Buffered |
10A |
|
13 |
F4.2 |
KPC Buffered Fan |
2A |
|
14 |
F307 |
CSP Power Supply |
2A |
|
15 |
F21 |
RDC Power Supply |
2A |
|
16 |
F305 |
Battery Power Supply |
15A |
|
17 |
F6 |
24V Non-buffered (Optional) |
7.5A |
|
18 |
F301 |
Non-buffered Option |
7A |
|
19 |
F15 |
Internal Fan (Optional) |
2A |
|
20 |
F14 |
External Fan |
7.5A |
|
21 |
F308 |
Buffered External Power Internal Supply |
7.5A |
Thank you for your attention, please leave a message if you have any questions!
