Rockwell Automation SA500 AC Power Modules - Manual (Page 21)

Power Module Mechanical Description 2-9
The Resolver Feedback connector pinout is shown in figure 2.4.
The analog input operates over the range of +/-10V differential (+/-30V common
mode). It is the user's responsibility to ensure that the input signal is scaled to conform
to this range. The input is bandwidth-limited to 320 Hz. The resolution of the input is
12 bits (11 bits plus sign) or 4.88 mV per bit. The input impedance is 1.3 megohms
and is resistively isolated. The analog input circuit is shown in figure 2.5.
If an analog tachometer is not used, the input may be used for other purposes as long
as the signal is within the correct voltage range. The PMI sends the analog input data
to the UDC module immediately before it is needed by the UDC module for the next
UDC task scan. The analog input data is stored in UDC register 214/1214. The value
may range from -2048 (-10 volts) to +2047 (+10 volts).
!
ATTENTION: For brushless motor applications, changing any resolver
wiring, breaking the resolver coupling, replacing the resolver, or replacing
the motor and resolver for any reason requires that the shaft alignment
test be performed again. Resolver wiring changes always affect shaft
alignment. A resolver change and/or a new motor/resolver combination
will affect the shaft alignment. Improper shaft alignment can cause motor
overspeed when the motor is started. Failure to observe this precaution
could result in bodily injury.
Figure 2.4 – Resolver Feedback Connector Pinout
Reference Out (+)
Reference Out (-)
Sine Input (+)
Cosine Input (+)
External Strobe Input (+)
External Strobe Input (-)
Not Used
Not Used
Analog Input (+)
C
F
K
N
R
A
B
D
E
H
J
L
M
P
Sine Input (-)
Cosine Input (-)
Key Pin
Analog Input (-)
Analog Input Shield