CLD – Cryo Linear Drive

A linear positioner for long range applications up to 50mm
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Product description

The Cryo Linear Drive (CLD) is a linear stage with an unrivaled 51.5 mm stroke in a compact and robust package. The combination of stepping and scanning functionality offers a solution for long stroke applications in cryogenic positioning. Optionally feedback can be fitted for closed loop control. Moving parts are made out of nonmagnetic phosphor bronze to minimize interaction with external magnetic fields.

Active axes-1
Type of motion-Linear
Step/scan actuator *-Piezo ceramic
Step Rangemm51.5
Speed @ 293 Kmm/s5
Speed @ 4 Kmm/s3
Step size @ 293 Kµm0.1 - 8
Step size @ 4 Kµm0.1 - 5
Scan range @ 293K **µm10
Scan range @ 4K **µm2
Scanner sensitivity @ 293 Knm/V66
Scanner sensitivity @ 4 Knm/V13
Driving forceN5
Load capacitygrams200
Mechanical endstops-at begin and end of range
Operating temperatureK0.02 - 375
Main construction material-Stainless steel, titanium, phosphor bronze
Dissipation @ 293KmJ/step1.5
Dissipation @ 4KmJ/step0.14
Encoder resolutionµmN/A1001
Controller/driver-CAB-230(115), CADM(2)
Encoder readout-N/AOEM2RSM
* Step/scan positioning is both done with the CADM2, not simultaneously
** CADM2 -20 to +130V, 10 bits resolution, setpoint rate approx. 10Hz

The COE (Cryo Optical Encoder) is a fiber based optical encoder that can be added to selected positioners for position feedback. It works by illuminating a grid and detecting high/low intensity transitions from features in the grid. Resolution is determined by the pitch of these features. It is an incremental encoder, which means that it will reset to “zero” at a power shutdown. The COE requires the OEM electronics module as light source and position readout. More info can be found in the Downloads section.

The RLS (Resistive Linear Sensor) is a resistive based sensor that can be added to selected positioners for position feedback. A wiper slides over a resistive track and the measured voltage is a measure of position. Resolution is determined by electrical noise and length of the resistive track. It is an absolute sensor, which means that it will give the actual position, even after recovering from a power shutdown. The RLS requires the RSM electronics module as voltage source and position readout. More info can be found in the Downloads section.

HV rated positioners can realistically be considered compatible with pressures as low as 1E-8 mbar. Lower pressures can be achieved by prolonged baking of positioners in vacuum at 100-150 deg C, depending on the type of positioner. Upon request JPE can provide such service at additional costs.

CLD1 /HV: Cryo Linear Drive 1
CLD1-COE /HV: Cryo Linear Drive 1-Cryo Optical Encoder
: /HV Cryo Linear Drive 1-Resistive Linear Sensor

CLD in Cryogenic Environments

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