User Manual

PD-1021 Hardware Manual (Rev. 1.00 / 2012-JUN-20) 6
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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
ø2.6
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