CRYO ROTARY MOTOR (CRM)

High torque rotational drive for cryogenic applications

CONFIGURATION

FEATURES

 Endless rotation
 Integrated scanner functionality
 High torque output
 Compact and robust design
 20 mK to 375K, vacuum compatible
 Materials: stainless steel, phosphor bronze
 Moving parts non magnetic
 Cryo Optical Encoder option “COE”
COE offers full 360 degrees range

DESCRIPTION

The Cryo Rotary Motor (CRM) is a rotational drive with high torque output. An optical encoder can be fitted for closed loop control. In contrast to typical resistive based encoders it has no blind spots and can measure over 360 angular degrees. The moving parts are made out of nonmagnetic phosphor bronze to minimize interaction with external magnetic fields.

SPECIFICATIONS
specsunitCRM1CRM1-COE
SYSTEM SPECIFICATIONS
Active axes-1
Type of motion-Rotational
Coarse/scanning actuator *-Piezo ceramic
Coarse RangedegEndless
Speed @ 293 Krev/min5
Speed @ 4 Krev/min1
Coarse step size @ 293 Kmrad (deg)0.15 - 0.75 (0.008 - 0.04)
Coarse step size @ 4 Kmrad (deg)0.1 - 0.25 (0.005 - 0.015)
Scan Range @ 293Kmrad (deg)0.6 (0.034)
Scan Range @ 4Kmrad (deg)0.15 ( 0.009)
Scanner sensitivity @ 293 K **mrad/V (deg/V)0.005 (0.0003)
Scanner sensitivity @ 4 K **mrad/V (deg/V)0.001 (0.00006)
Driving torqueNmm15
Load capacitygrams200
Operating temperatureK0.02 - 375
Main construction material-Stainless steel, phosphor bronze
Massgrams170180
Dissipation @ 293KmJ/step0.59
Dissipation @ 4KmJ/step0.055
Encoder resolutionPPRN/A850
DRIVE ELECTRONICS
Controller/driver-CAB-230(115), CADM(2), MCM
Encoder readout-N/AOEM2
* Coarse/scan positioning is both done with the CADM(2), not simultaneously
** 0-150V, 10 bits resolution, setpoint rate approx. 10Hz

Ordering Information

 CRM1 CRM1 incl. Scanner
CRM1-COE CRM1 incl. Scanner and Cryo Optical Encoder

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CRM in operation in cryo

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