This document compares the UR5 CB2 and new UR5 CB3 collaborative robots. The CB3 has adjustable safety settings certified to Performance Level d, absolute encoders requiring no referencing, additional digital and configurable I/O, and improved real-time performance including faster sampling and ability to resume programs after stops. Key features like payload, reach, and programming remain the same between the two robots.

1. Presenting CB3
1

2. What’s the same?
2

3. 3
What’s the same?
UR5 CB2 UR5 CB3

4. 4
What’s the same?
 Technical specs in terms of performance
UR5 UR10
Payload 5 kg 10 kg
Reach 850 mm 1300 mm
Joint ranges +/-360˚ +/-360˚
Repeatability +/-0.1 mm +/-0.1 mm
Joint speed 180˚/sec 120/180˚/s
Tool speed 1000 mm/sec 1000 mm/sec
Weight 18.4 kg 28.9 kg
IP rating IP54 IP54
Temp. Range 0-50˚C 0-50˚C

5. 5
What’s the same?
 Key value drivers
 Easy programming
 Fast set-up
 Flexible deployment
 Collaborative and Safe
 Fast payback

6. What’s the difference?
6

7. 7
CB3 key new features
 Adjustable safety
 Absolute encoders
 Additional I/O
 Runtime improvements

8. 8
Adjustable safety
 Adjustable safety settings
 All safety functions are rated as Performance Level d
 Certified by TÜV
 Tested in accordance with:
 EN ISO 13849-1:2008 PLd
 EN ISO 10218-1:2011

9. 9
UR Safety 3.0
 Configurable safety system
 Safety can be adjusted to the individual
application
 Two safety modes
 Normal mode
 Reduced mode
 Switch mode by
 Digital input
 Entering boundary

10. 10
UR Safety 3.0
 Adjustable safety functions
 Joint position limits
 Joint speed limits
 TCP Plane limits
 TCP Orientation limit
 TCP Speed limit
 TCP Force limit
 Robot Power limit
 Robot Momentum limit

11. 11
 User manual
 Page 64
TÜV certificate

12. 12
Absolute encoders
 True absolute encoders
 No referencing needed at startup
 No backup batteries
CB2 Traditional robot CB3
Encoder type Incremental Absolute True absolute
Referencing needed YES NO NO
Battery needed NO YES NO

13. 13
Additional I/O
 16 digital in
 8 general purpose inputs
 8 configurable inputs
 16 digital out
 8 general purpose outputs
 8 configurable outputs

14. 14
Additional I/O
 Safety Control board
 Replaces Masterboard (CB2)
 Hard-coded connectors
 Color coded slots

15. 15
Runtime improvements
 Improved realtime performance
 Part of software re-written
 Resume program after security stop
 Program execution will continue from where it stopped
 Conveyor tracking
 Sampling time 40kHz (CB2: 125Hz)
 Singularity
 Speed reduced around singularities, enabling robot to move through
singularities