Staubli TX Series - Releasing Joint Brake; Safety

58 D28065504A - 02/2007
2.10. RELEASING JOINT BRAKE
The controller must be connected to the power supply.
Place the brake release selector in position corresponding to the joint to be released.
When the pushbutton is pressed to free the brakes, the brake on the joint under consideration is freed and
the motor is put into short-circuit on the amplifier to reduce the arm drop speed.
2.11. SAFETY
2.11.1. POTENTIAL RISKS
For the UL version, a yellow indicator light (1) is fitted on the robot arm to show that drive power is available,
motion is possible and that it represents a possible cause of risks for the operator (figure 2.20).
When the indicator light (1) is on, take all necessary precautions to reduce risks.
Figure 2.20
CAUTION:
Make sure that the arm and load relevant to this joint are suitably supported.
DANGER:
Arm can fall because of gravity when brake is released.
DANGER:
None of the joints are equipped with a counter balancing system. Short-
circuiting of the motors is the only system used to limit the drop speed.
1