CMA Series actuators provide reliable motorized motion in a lightweight and very compact package. The CMA incorporates an excellent space saving design (only 19.7 mm height x 15.2 mm width) that allows it to be used with a wide variety of linear stages, mirror mounts, and OEM applications. The CMA is designed to fit your existing manual stages and other opto-mechanical components as a direct replacement for manual micrometers.
To provide the best fit for your application’s requirements, the CMA Series actuators are available in stepper, open-loop DC, and closed-loop DC servo motor versions and with 12.5 or 25 mm travel. The CMA provides sub-micron minimum incremental motion and can be used for loads up to 90 N.
To protect your investment, the CMA Series actuators include fixed integrated limit switches. Fail-safe limits cut motor power, preventing accidental over travel on DC open loop versions (CC), while limit-sensing switches provide feedback to your controller indicating that a limit switch has been reached on stepper motor (PP) and DC Servo motor (CCCL) versions.
460P stage with a CMA actuator.
The 861 Hand-Held Motion Controller is a perfect companion for Newport’s open-loop CMA Actuators. The 861 allows open-loop operation with adjustable velocity control. This controller has a female “phone-jack” receptacle.
861 Hand-held controller.
Design Details
| Base Material |
Aluminum |
| Drive Mechanism |
Rolled lead screw |
| Drive Screw Pitch (mm) |
0.5 |
| Reduction Gear |
256:1 |
| Feedback |
CCCL: Motor mounted rotary encoder, 40 pts/rev
CC, PP: Open Loop (no encoder) |
| Limit Switches(1) |
CC: Mechanical switches
CCCL, PP: Limit sensors |
| Motor |
CC, CCCL: DC servo motor UE10CC
PP: 2-phase stepper motor UE10PP, 20 steps/rev |
| Cable Length |
PP, CCCL: 4.6 m with 25 pin Sub-D connector
CC: 3 m with “phone jack” connector |
1) Fail-safe limit switches cut power to the motor when a limit switch is activated. To move the actuator when a limit switch is activated, the direction of motion must be reversed. Overriding or disabling the limit switches will damage the CMA actuator.
Specifications
|
|
CMA-12CC
CMA-25CC
|
CMA-12PP
CMA-25PP
|
CMA-12CCCL
CMA-25CCCL
|
| Travel Range [ (mm)] |
0.5 in (12.5) or 1 in (25) |
| Resolution () |
|
(2) |
|
| Minimum Incremental Motion (µm) |
<0.5 typical |
0.3 |
0.2 |
| Bi-directional Repeatability(1) (µm) |
|
4 |
3 |
| Backlash |
<15 µm before controller compensation |
| Speed Range(3) (µm/s) |
50–400 |
50–400 |
50–400 |
| Axial Load Capacity (+Cx) (N) |
90 |
| Weight [lb (kg)] |
0.2 (0.1) |
1) Assumes controller backlash compensation.
2) Full-step resolution
3) Maximum speed depends on a number of factors:
- When used with the 861 controller, the maximum speed of the CMA-xxCC is less than 400 µm/s and is dependent on the available battery power.
- When used with the NSC200 controller and the NSC-PP adaptor cable, the maximum speed of the CMA-xxPP is 200 µm/s.
- For axial loads over 45 N, the maximum speed of the CMA-xxPP is limited to 200 µm/s.
- For axial loads over 45 N, the maximum speed of the CMA-xxCC and CMA-xxCCCL is limited to 300 µm/s.
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|
Model |
A |
B |
|
Dimensions |
| CMA-12CC
|
3.88 (98.6) |
0.04–0.58 (0.9–14.7) |
| CMA-12PP
|
3.88 (98.6) |
0.04–0.58 (0.9–14.7) |
| CMA-25CC
|
4.38 (111.3) |
0.24–1.28 (6.0–32.5) |
| CMA-25PP
|
4.38 (111.3) |
0.24–1.28 (6.0–32.5) |
| CMA-12CCCL
|
4.38 (111.3) |
0.04–0.58 (0.9–14.7) |
| CMA-25CCCL
|
4.88 (124.0) |
0.24–1.28 (6.0–32.5) |
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