Page 4 ETN043212-D02
DRV225 and DRV250 Stepper Motor Actuators
Chapter 3 Operation and Maintenance
3.1 Environmental Conditions
Location Indoor use only
Maximum altitude 2000 m
Temperature range 5 to 40°C (41 to 104°F)
Maximum Humidity Less than 80% RH (non-condensing) at 31°C
To ensure reliable operation the unit should not be exposed to corrosive agents or excessive moisture, heat or dust.
If the unit has been stored at a low temperature or in an environment of high humidity, it must be allowed to reach ambient
conditions before being powered up.
The unit must not be used in an explosive environment.
3.2 Fitting the Motor Actuator
The actuator is designed for fitting to an LNR50 series stage.
Referring to Fig. 3.1...
1) Loosen the mounting block actuator pinch bolts.
2) Remove the existing drive.
3) Loosen the actuator mounting block fixing bolts, and remove the mounting block together with its bolts.
4) Using the screws supplied with the motor, fit the motor actuator to the stage.
5) Adjust the actuator to its center position.
6) Loosen the push block pinch bolts and position the push block such that the stage is in its center of travel.
7) Tighten the push block pinch bolts.
Fig. 3.1 Fitting a motor drive
Caution
This unit is design for operation within normal operating conditions. It is not recommended to use this equipment outside
the following limits.
Caution
When a DRV225 or DRV250 motor actuator is fitted, the stage must be fitted with an LNR50P4(/M) baseplate before it
is fitted to the work surface - see www.thorlabs.com for more information. The legacy LNR50P1 baseplates are not
compatible with these motors.
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