Rockwell Automation 57C411 Resolver Input Module - Manual (Page 16)

3Ć4
Monitor register 0. Verify that it contains numbers
proportional to the shaft position of the resolver and that
the numbers increase as the resolver is rotated clockwise.
The direction of rotation can be reversed by switching the
polarity of either the sine or the cosine wires. See figure 3.4.
RESOLVER
CLOCKWISE ROTATION = COUNT UP
SIN +
SIN -
COS +
COS -
57C411
RESOLVER
CLOCKWISE ROTATION = COUNT DOWN
SIN +
SIN -
COS +
COS -
57C411
RESOLVER
CLOCKWISE ROTATION = COUNT DOWN
SIN +
SIN -
COS +
COS -
57C411
NOTE 1: All wires should be twisted pairs.
NOTE 2: Reversing the polarity of the wires as shown will
also change the perceived shift angle by 180 elecĆ
trical degrees.
OR
SINE
COSINE
SINE
COSINE
SINE
COSINE
Figure 3.4 Ć Changing the Direction of Rotation
Step 10. If the external strobe input is being used, the shaft should
be rotated to a fixed position and stopped. The external
strobe input should now be closed. Verify that register 1
contains the same data as register 0.
Step 11. Turn off power to the rack. Connect the mechanical
coupling between the resolver and the motor. Turn on
power to the system.