Kuka KR C4 compact - 6.11 Performance Level; 6.11.1 PFH Values of the Safety Functions

72 / 93 Issued: 20.04.2018 Version: Spez KR C4 compact V10
KR C4 compact
6.11 Performance level
The safety functions of the robot controller conform to Category 3 and Perfor-
mance Level d according to EN ISO 13849-1.
6.11.1 PFH values of the safety functions
The safety values are based on a service life of 20 years.
The PFH value classification of the controller is only valid if the E-STOP device
is tested at least once every 12 months.
When evaluating system safety functions, it must be remembered that the
PFH values for a combination of multiple controllers may have to be taken into
consideration more than once. This is the case for RoboTeam systems or
higher-level hazard areas. The PFH value determined for the safety function
at system level must not exceed the limit for PL d.
The PFH values relate to the specific safety functions of the different controller
variants.
Safety function groups:
 Standard safety functions
 Operating mode selection
 Operator safety
 EMERGENCY STOP device
 Enabling device
 External safe operational stop
 External safety stop 1
 External safety stop 2
 Velocity monitoring in T1
 Safety functions of KUKA Safe Robot Technology (optional)
Fig. 6-12: Equipotential bonding between the manipulator and the robot
controller
1 Equipotential bonding connection on the manipulator
2 Equipotential bonding between the manipulator and the robot con-
troller
3 PE cable to the central PE rail of the supply cabinet
4 Equipotential bonding connections on the robot controller