14
(3) Moment of inertia of each style can be found with the calculation formula shown below.
How to read Graph 1.
Example 1) When there are constraints for the moment of inertia of load and rotation time.
From “Graph 1”, to operate at the load moment of inertia 1 x 10–4 kg·m2 and
at the rotation time setting of 0.3
S
/ 90°, the model will be CRB
□
30.
Example 2) When there are constraints for the moment of inertia of load, but not for rotation time.
From “Graph 1”, to operate at the load moment of inertia 1 x 10
–5
kg·m
2
CRB15 will be 0.22 to 0.5 sec/ 90
o
CRB20 will be 0.13 to 0.5 sec/ 90
o
.
[Remarks] As for
the rotation times in “Graph 1”, the lines in the graph indicate the adjustable
speed ranges.
If the speed is
adjusted towards the low-speed end beyond the range of the line, it could
cause the actuator to stick, or, in the case of the vane type, it could stop its operation.
Graph 1
