PreciseFlex_Robot
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5.10.5 Power and force limiting by inherent design or control
“The power or force limiting function of the robot shall be in compliance with 5.4. If any parameter limit is
exceeded, a protective stop shall be issued.”
Section 5.4 requires the system designer to perform a Performance Level (PL) or Safety Integrity Level
requirement
(SIL) check based on the robot AND the application tooling and workcell. For example, a
safe robot may still need safety interlock screening if it is moving a dangerous tool. This requires the
application designer to review the requirements of 10218-2:2011 which addresses robots in workcells.
Determining a Machine’s Required Performance Level (PLr). ISO 13849-1:2006 Annex A
provides
tables and a worksheet to identify a machine’s Required Performance Level
requirements. Figure 1 below
shows a flow chart for determining Performance Levels. Briefly these are: Select S1 for slight injuries
(normally reversible) and S2 for serious injuries or death. Select F1 for infrequent exposure to a hazard
(for example only from time to time) and F2 for frequent exposure (for example continuously entering
workcell). Select P1 for easily recognizing and avoiding a hazard (for example a repetitive motion) and
P2 for a hazard that may be difficult to avoid (for example a sudden, non-repetitive motion that may trap
an operator). An example of determining PL for a PF400 workcell is given in Appendix A of this section,
where it is shown that a PL of “a” is sufficient for the workcell.
Figure 1
In determining whether operators should be prevented from entering a workcell while a robot is moving,
the first question that must be answered when performing a risk assessment is determining the likely
severity of injury if a robot strikes a person. If the robot will not injure a person in the event of a collision,
and there is no other equipment in the workcell that can injure a person, then a person may be allowed to
enter the workcell while the robot is moving.
Summary of Contents for PF3400
Page 8: ......
Page 32: ...PreciseFlex_Robot 24 Appendix B TUV Verification of PF400 Collision Forces...
Page 33: ...Introduction to the Hardware 25...
Page 34: ...PreciseFlex_Robot 26...
Page 35: ...Introduction to the Hardware 27...
Page 37: ...Introduction to the Hardware 29 Appendix C Table A2 from ISO TS 15066 2016...
Page 38: ...PreciseFlex_Robot 30 Table A2 Continued...
Page 41: ...Introduction to the Hardware 33 PF400 500gm Safety Circuits PF3400 3kg Safety Circuits...
Page 45: ...Installation Information 37...
Page 46: ...PreciseFlex_Robot 38...
Page 47: ...Installation Information 39...
Page 48: ...PreciseFlex_Robot 40...
Page 54: ...PreciseFlex_Robot 46 Schematic System Overview...
Page 55: ...Hardware Reference 47 Schematic FFC Boards Revision B PF400...
Page 56: ...PreciseFlex_Robot 48...
Page 57: ...Hardware Reference 49 Schematic FFC Boards Revision C PF400...
Page 58: ...PreciseFlex_Robot 50 Schematic FFC Boards 3kg PF400...
Page 59: ...Hardware Reference 51...
Page 60: ...PreciseFlex_Robot 52 Schematic Safety System Overview PF400 CAT3...
Page 61: ...Hardware Reference 53...
Page 62: ...PreciseFlex_Robot 54 Controller Power Amplifier Connectors Control Board Connectors...
Page 63: ...Hardware Reference 55 Gripper and Linear Axis Controller Connectors...
Page 64: ...PreciseFlex_Robot 56...
Page 65: ...Hardware Reference 57...
Page 66: ...PreciseFlex_Robot 58 Schematic Slip Ring for 60N Gripper...
Page 67: ...Hardware Reference 59...
Page 68: ...PreciseFlex_Robot 60...
Page 69: ...Hardware Reference 61...
Page 70: ...PreciseFlex_Robot 62...
Page 71: ...Hardware Reference 63...
Page 72: ...PreciseFlex_Robot 64...
Page 73: ...Hardware Reference 65 Motor 60N Gripper...
Page 74: ...PreciseFlex_Robot 66...
Page 106: ...PreciseFlex_Robot 98 b The CALPP application takes about 1 minute to run...
Page 124: ...PreciseFlex_Robot 116 Wiring for 60N Gripper with Battery Pigtail Wiring for Pneumatic Gripper...
Page 125: ...117 Wiring for Vacuum Gripper Wiring for Vacuum Pallet Gripper...