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          Versatile Rotary Actuator Device

 

APPLICATIONS

 

l  Optical beam chopper/shutter

l  Optical element positioning

l  Vending machine actuator

l  Office equipment actuator

l  Air damper/door actuator

l  Automobile actuator

l  Fluid valve actuator

 

FEATURES AND BENEFITS

 

l  Wide angle, bidirectional rotation

l  Linear current vs. angle profile

l  Low power consumption

l  Convenient package size

l  Industry-standard shaft size (4.76mm for 1510 & 3mm for 516)

l  Two coils, individually accessible for flexible drive

l  Low rotor inertia allows responsive control of common loads

l  Connectorized electrical interface for easy installation

l  Front and Rear shafts allow multiple actuated items or encoder/position sensor use

l  Disk-drive quality, axially-preloaded ball bearings for zero shaft play and long life

l  Smooth, quiet, shock-free motion (no clack-clack at end of travel)

l  Magnetic spring return (no torsion bars to wear out or break)

l  True rotary motion with no axial displacement

 

GENERAL DESCRIPTION

 

The actuator is a limited rotation Versatile Rotary Actuator Device featuring a magnetic spring return, very wide-angle capability, and linear current versus angle profile. The high coil resistance allows for low power consumption, and access to two individual drive coils allows flexible single-supply unidirectional or bidirectional operation as well as dual-supply operation. Front and rear shafts allow multiple points of attachment, or the use of an encoder or position sensor for closed loop operation.

 

SPECIFICATIONS

 

Parameter

Series

516

Series 1510

Units

Rotation angle (1)

+/-45

+/-45

Mechanical degrees peak-to-peak

Torque Factor (2)

270,000

1,500,000

Dyne*Centimeters per amp (coils in series)

Magnetic Spring Stiffness (3)

1,350

10,700

Dyne*Centimeters per degree

Rotor Inertia

0.03

0.5

Gram*Centimeters2

Natural Frequency (4)

240

185

Hz

Coil Resistance (5)

50

56

Ohms (coils in series)

Coil Inductance (5)

12.6

175

MilliHenry at 1kHz (coils in series)

Maximum Current (6)

0.5

2.0

Amps per coil

Current vs. Angle Linearity

90

95

% over +/-45 degrees peak-to-peak

Current vs. Angle Sensitivity (7)

5

7

Milliamps per degree (coils in series)

Temperature coefficient of sensitivity

+0.14

+0.14

% per C

Angular position hysteresis

+/-1

+/-1

Mechanical degrees maximum

Maximum internal temperature  (8)

80

80

C

Thermal Resistance with heatsink (9)

2.8

7.6

C per watt

Thermal resistance without heatsink

28

12.0

C per watt

DC Power at +/-15 degrees

 

0.64

Watts (6 volts series; 3 volts parallel)

DC Power at +/-20 degrees

0.5

 

 

DC Power at +/-30 degrees

 

2.57

Watts (12 volts series; 6 volts parallel)

DC Power at +/-40 degrees

2.0

 

 

DC Power at +/-45 degrees

 

5.78

Watts (18 volts series; 9 volts parallel)

DC Power at +/-60 degrees

5.12

10.28

Watts (24 volts series; 12 volts parallel)

Dielectric Strength

1000

1000

VRMS

Life cycles (10)

1010

1010

Cycles

Mass

30

180

Grams

NOTES

1. There is no mechanical stop mechanism preventing further rotation, and the actuator may be used with angles greater than +/- 60 mechanical degrees with some sacrifice in current-versusangle linearity.

2. Torque Factor depends on the shaft rotation angle. See the section on Torque production.

3. Magnetic spring stiffness depends on the shaft rotation angle and the model of the actuator.

4. Since Magnetic Spring Stiffness depends on angle, Natural Frequency also has some minor dependence on angle. Natural frequency is thus specified for small angles.

5. Coil resistance and inductance depend on whether coils are connected in series, in parallel, or used independently. See the section on Coil Resistance and Inductance.

6. It is not recommended to operate the actuator continuously with greater than 0.2 amps per coil without a heat sink.

7. Current vs. Angle operation assumes that there is no static load and that the actuator is merely used to move a flag, mirror, or other element suspended from the actuator shaft.

8. The actuator should survive operation over 100 degrees C, but it is not recommended to exceed 80 degrees C on a repeated basis.

9. Heat sink must be clamped around the actuator to meet the specification above.

10. Life cycles are only limited by bearing life. Bearings are high quality disk drive grade.

 

Specifications are at a temperature of 25 C. All mechanical and electrical specifications are +/-10%.

 

ORDERING INFORMATION

 

The part number provided below is for our standard VRAD-516 actuator. Customization is possible.

VRAD-0x5x16-0.27-1.35-2x25-12.6-118x0.24-118x0.24-D-C (Standard product)

 

The part number provided below is for our standard VRAD-1510 actuator. Customization is possible.

VRAD-15x10x15-1.6-10-2x28-200-187x0.5-187x0.5-AR1-C

 

PART NUMBERING SCHEME

 

The part numbering scheme was developed as a tool for customers to completely specify individual

actuator elements. Each element is separated by a dash.

 

Typical part number: VRAD-0x5x16-0.27-1.35-2x25-12.6-118x0.24-118x0.24-D-C

 

Part number element definitions:

VRAD (Versatile Rotary Actuator Device series)

Width x Height x Depth (specified in tenths of an inch leading 0 indicates round)

Torque Factor (specified in Millions of Dyne*CM per Amp)

Magnetic Spring Stiffness (specified in Thousands of Dyne*CM per mechanical degree)

Number of coils and resistance per coil (specified in ohms)

Inductance of all coils in series (specified in millihenry tested at 1kHz)

Front Shaft diameter and length (diameter specified thousandths, length in inches)

Rear shaft diameter and length (diameter specified thousandths, length in inches)

Bearing preload configuration (A=axial, D=radial, N=none, R=from rear, F=from front, # in pounds)

Temperature range (C = Commercial, I = Industrial)

 

Note that we can customize each of these elements for individual applications. Please contact us if you

have special requirements not met by the standard actuator.

 

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Sintec Optronics Pte Ltd

10 Bukit Batok Crescent #07-02 The Spire Singapore 658079

Tel: +65 63167112 Fax: +65 63167113  

E-mail: sales@sintec.sg sales@SintecOptronics.com

URL: http://www.sintec.sghttp://www.SintecOptronics.com

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