2-4 Examining operating status
Selection guidelines
2-7
1
2
3
4
5
6
7
8
9
10
11
Apx
Sel
ect
ion gui
del
ines
2-4
Examining operating status
When the operation pattern (duty cycle) is such that the actuator starts and stops repeatedly, starting
current and braking current flow through the motor at high frequency and the actuator generates heat.
Therefore, the duty cycle must be examined.
Examine in the following order:
Examining actuator rotation speed
Calculate the required rotation speed (r/min) of the load driven by the FHA-C mini series.
For linear operation, use the rotation speed conversion formula below:
Select an appropriate reduction ratio from the 30, 50 or
100 series so that the calculated rotation speed does
not exceed the maximum rotational speed of the FHA-C
mini series actuator.
Calculating and examining load inertia moment
Calculate the inertia moment of the load driven by the FHA-C mini series actuator.
Refer to appendix 2 (Apx-3) for the calculation.
Based on the calculated result, tentatively select a FHA-C mini series actuator by referring to [2-1
Allowable load inertia moment] (P.2-1).
(mm)
pitch
mechanism
feed
Screw
(mm/min)
speed
Linear
=
(r/min)
speed
Rotation
100r/min
70r/min
50r/min
35r/min
Linear speed (mm/min)
Rotation speed (r/min)
193r/min
S
cr
ew pi
tc
h (
m
m
)
