Canon OMNERA 400T Operator's Manual page 42

Safety
Safety Functions
2.11.1.4 Safety Functions Table
Table 0181 Top Crash Guard
The table top crash guard shall only be primarily used as a safety precaution for the System,
but will as well limit the risk of personal injury, although the crash guard does not guarantee
patient protection.
To be able to detect a collision, four micro switches are placed between the Table and the ta-
ble top. If the Table crashes into an object, the micro switches will stop the movement in the
on-going direction, but it will allow the movement in the opposite direction. When the object
is removed, the Table can move in both directions again.
At power-up, the Table will detect if a button is activated, and then disable all movements. If
that is the case, switch off the power and remove the obstacle/replace the broken switch.
Table 0055 Top Crash Guard
The table top crash guard is primarily used as a safety precaution for the System (Table top)
but will of course limit the risk of personal injury as well, although the function does not guar-
antee the accuracy needed for patient protection.
To be able to detect a collision, four load cells are mounted between the table frame and the
columns. The sensor produces an analogue signal to an input on the guard board. The guard
board amplifies the signal and checks if the value is within the specified range. If the signal is
not within range the guard board activates an output, which activates a relay and the move-
ment will stop.
The table top crash guard act as a vertical travel safety system protecting the table top. It ac-
tivates if a collision is detected and the force exceed 20 kg, all movements are stopped
OMNERA® 0180-095-418-EN Rev. 6.1
Page 34
Operator´s Manual
2020-09-18