V-273 PIMag Voice Coil Linear Actuator

Description

A series of actuators based on PI Mag non-contacting voice-coil linear motor technology ensures greater dynamics and positioning accuracy. With low wear and high lifetime, different travel and force capabilities are available, in addition to custom-engineered solutions.

 

The V-273 automation actuator comes with a unique controller that reads the actuator's force and position sensors in parallel and seamlessly switches from closed-loop force control to position control, and vice versa. OEM and industrial applications with rigorous throughput and uptime requirements benefit greatly from these features. With force resolutions to the Milli-Newton range and 100-nm linear encoder resolution, the mechanism provides ultra-smooth action transitions.

 

Step size and frequency are variable and allow the user to control the desired speed and positioning resolution. The position sensor resolution of the new N-472 actuator is below one nanometer. PiezoMike products simplify the automated adjustment of mechanical and optomechanical components. The motion ranges from 0.3 to 1 in. are standard, as well as vacuum capability.

Specs

Motion and Positioning

V-273.440 / V-273.441

Active Axes

Z

Travel Range

0.8 in.

Integrated Sensor

Optical linear encoder

Sensor Resolution

10 (1) nm

Min. Incremental Motion

100 nm

Linearity Error, Closed-Loop

1%

Repeatability

0.00002 in. (±0.5 µm)

Velocity

4 in/s

Force Sensor Resolution

1 mN

Smallest Force Step

5 mN

Mechanical Properties
Bearing/GuideRecirculating ball bearing
Motion Straightness0.0008 in. (±20 µm)
Moved Mass W/O Load3.5/8 oz. (100/230 g)
Drive Properties
Motor TypePIMag voice coil drive, moving coil
Coil Resistance16 Ω
Coil Inductance6 mH
Time Constant0.375 ms
Back EMF8V·s/m
Force Constant8
Motor Constant2 N/(√W)
Current Constant0.125 A/N
Nominal Current375 (2) mA
Peak Current800 mA
Avg. Push/Pull Force3 N
Power Dissipation of Coil2.25 W
Max. Push/Pull Force6 N
Permitted Temp. for Actuator Components140°F
Miscellaneous
Operating Temp. Range50 to 140°F
MaterialAluminum
Mass1.5/1.7 lb.
Cable LengthV-273.441: Force sensor cable: 3.2 ft
Motor/Sensor ConnectorV-273.440: D-sub 15 (m)
V-273.441: 2 x D-sub 15 (m)
Lifetime>107 cycles
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