Epson RC170 Betriebsanweisung Seite 34

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2. Safety
16 EPSON RC+ 5.0 (Ver.5.4) User's Guide Rev.4
Peripheral Equipment Design
When designing equipment that removes and supplies parts and materials to the robot
system, ensure that the design provides the operator with sufficient safety. If there is a
need to remove and supply materials without stopping the robot, install a shuttle device or
take other measures to ensure that the operator does not need to enter a potentially
dangerous zone.
Ensure that an interruption to the power supply (power shutoff) of peripheral equipment
does not lead to a dangerous situation. Take measures that not only prevent a work piece
held from being released as mentioned in “End effector Design” but that also ensure
peripheral equipment other than the robots can stop safely. Verify equipment safety to
ensure that, when the power shuts off, the area is safe.
Remote Control
To
prevent operation by remote control from being dangerous, start signals from the
remote controller are allowed only when the control device is set to REMOTE, TEACH
mode is OFF, and the system is configured to accept remote signals. Also when remote is
valid, motion command execution and I/O output are available only from remote. For the
safety of the overall system, however, safety measures are needed to eliminate the risks
associated with the start-up and shutdown of peripheral equipment by remote control.
Emergency Stop
Each r
obot system needs equipment that will allow the operator to immediately stop the
system’s operation. Install an emergency stop device that utilizes emergency stop input
from the controller and all other equipment.
During an emergency stop, the power that is supplied to the motor driving the robot is shut
off, and the robot is stopped by dynamic braking.
The emergency stop circuit should also remove power from all external components that
must be turned off during an emergency. Do not assume that the robot controller will turn
off all outputs if configured to. For example, if an I/O card is faulty, the controller cannot
turn off a component connected to an output. The emergency stop on the controller is
hardwired to remove motor power from the robot, but not external power supplies.
Do not press the Emergency Stop switch unnecessarily while the Manipulator is operating.
Pressing the switch during the operation makes the brakes work. This will shorten the life
of the brakes due to the worn friction plates.
Normal brake life cycle: About 2 years (when the brakes are used 100 times/day)
Before using the Emergency Stop switch, be aware of the followings.
- The Emergency Stop (E-STOP) switch should be used to stop the Manipulator only in
case of emergencies.
- To stop the Manipulator operating the program except in emergency, use Pause (halt) or
STOP (program stop) commands.
Pause and STOP commands do not turn OFF the motors. Therefore, the brake does not
function.
- For the Safeguard system, do not use the circuit for E-STOP.
For details of the Safeguard system, refer to the following manuals.
Safety and Installation 2.6 Connection to EMERGENCY Connector
To check brake problems, refer to the following manuals.
Manipulator Manual Maintenance 2.2.2 Inspection While the Power is ON
(Manipulator is operating)
Safety and Installation 5.2 Inspection Point - Inspection While the
Power is ON (Manipulator is operating)
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