PD-1021 V1.2 Hardware Manual (Rev. 1.01 / 2013-JUL-23)

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3 Mechanical and Electrical Interfacing

The PD-1021 consists of a 28mm / NEMA 11 stepper motor with controller/driver electronics mounted to

the back of the motor.

Note:

In order to make proper use of the integrated sensOstep encoder (the sensor IC is placed on the bottom

of the pcb) the electronics should not be removed/moved relative to the motor. In case this encoder

feature is not used, the electronics may be mounted according to different application requirements.

3.1 Dimensions

Currently, there is a choice between two 28mm stepper motors of different lengths and different torques.

The board with the controller/driver electronics has an overall size of 28mm x 28mm in order to fit on

the back side of a NEMA11 (28mm flange size) stepper motor. The printed circuit board outline is marked

green in the following figure.

Please also refer to the manuals of the related stepper motors QSH2818-32-07-006 and QSH2818-51-07-

012.

3.1.1 Dimensions of PD28-1-1021

28

2

22-0.05

20±1

5

4.5

43 max

15±0.2

28

28

25.5

25.5

2.5

23

26

R 2

R 2.5

Rear view

28

23±0.2

23±0.2 28

Front view

M2.5

deep 4.5

22-0.05

5

30+1

32

Figure 3.1 PD28-1-1021 dimensions