Technisches Handbuch
SMCI33
Connections and circuits
3.2 Encoder connection: Connector X2
Optional encoder
An optional encoder can be connected to the stepper motor control.
By default, the closed-loop control for a three-channel encoder is set up with 500
pulses/revolution in an 1.8° stepping motor. With an 0.9° stepper motor, you should
use an encoder with 1000 pulses/revolution to achieve the same control quality.
Depending on the application, it may make sense to use higher encoder resolutions
(up to max. 2000 pulses/revolution) to improve control quality or to use a lower
resolution (min. 200 pulses/revolution) for low-cost applications or for step monitoring
alone.
The following encoder resolutions can normally be processed by the controller: 192,
200, 256, 400, 500, 512, 1000, 1024, 2000, 2048.
Recommended:
Where possible, use Nanotec encoders with the order number
WEDS/WEDL-5541 Xxx.
If an encoder is
not
used, the "Disable" mode must be set in the "Error correction" tab
in the "Rotation Direction Mode" selection menu. See the NanoPro separate manual.
Using encoders with line drivers
The encoders of the WEDL series with a line driver output an inverted signal in
addition to the encoder signal; this leads to better interference immunity and is
especially recommended for long lines lengths.
We recommend shielding and twisting the encoder line to minimize interference with
the encoder signal from the outside. To be able to connect negative signals to the
SMCI33, you require adapter ZK-SMCI-LD.
Encoder connection diagram (X2)
Note:
Complete connection diagram, see Section 2.1.
Pin assignment connector X2: Encoder
Pin no.
Name
Observations
1 +5
V
2 Track
(B)
3 Track
(A)
4
Index track (I)
5 GND
12
Issue: V 2.2
