CKD ABSODEX AX1022, Manual

Page: 16 / 104

Intro 15
CAUTION Design & Selection
1
The actuator -- excluding the AX8000 series -- and driver are
not waterproof. Provide waterproofing for use in places where
water or oil could come in contact with devices.
2
Current leakage and faults could occur if swarf or dust get
onto the actuator or driver. Check that these do not come in
contact with devices.
3
The cable enclosed as standard cannot be used with applications
involving repeated bending. Select the optional flexible cable for
these applications.
4
If cable is longer than 6 m, insert a noise filter to the motor
cable. Connect the IN side of the noise filter to the driver, and
install the filter as close to the driver as possible.
5
If power is turned off and servomotor turnoff is executed while
the servomotor is on (holding), the output shaft may move
from the held position even without external force.
6
Optional magnetic brakes are used to enhance holding rigid-
ity during output shaft stoppage.
Do not use these brakes to brake or stop a rotating output
shaft.
7
Equipment in which direct drive actuators are installed should
have sufficient rigidity to realize full direct drive actuator per-
formance. If the load equipment or frame's mechanical unique
vibration is relatively low (200 to 300 Hz or less), resonance
could occur in the direct drive actuator and load equipment or
frame. Secure the rotary table and main unit installation bolts,
and ensure sufficient rigidity without loosening, etc. [Fig. 1]
Gain must be adjusted based on load table size, etc.
Even when the direct drive actuator is not directly installed, it should
be installed on a highly rigid frame. [Fig. 2]
AX**75 or less
AX*150 and over
LF-310KA
LF-320KA
NEC Tokin (Corp.)
NEC Tokin (Corp.)
Three phase 10A
Three phase 20A
Model no. Maker
Dial plate fixing
Mounting base
8
If sufficient rigidity cannot be attained, machine resonance is
suppressed to some degree by installing dummy inertia as
close to the actuator as possible. Examples of adding dummy
inertia are shown below.
When extending the output shaft, the following dimensions
apply as a guide to the extended shaft's diameter:
AX*006, AX*009, AX*012, AX*018,
AX*022, AX*045: 60mm and over,
AX*075, AX*150, AX*210, AX*300: 90mm and over,
AX*500: 150mm and over.
As a reference, dummy inertia is [load inertia] x (0.2 to 1).
[Fig. 3]
[Fig. 3] Example 1. for dummy inertia installation
When coupling with a belt, gears, or spline, or when
joining with a key, dummy inertia should be [load inertia]
x (0.5 to 2).
If speed changes with belts or gears, use load inertia as
the actuator output shaft conversion value, and install
dummy inertia on the actuator.[Fig. 4] [Fig. 5]
Note: Install dummy inertia as large as possible within the
actuator's capacity. (Use steel that has a large specific
gravity.)
[Fig. 4] Example 2. for dummy inertia installation
[Fig. 5] Example 3. for dummy inertia installation
Dummy inertia
Dummy inertia
Gear
Dummy inertia
Ball spline
Select gears with as large
diameter as possible.
[Fig. 1] Installing the actuator
[Fig. 2] Mounting the actuator