Rockwell Automation 57C411 Resolver Input Module - Manual (Page 10)

2Ć2
The module produces a26 volt rms 2381 Hertz sine wave reference
output signal which is capable of driving a 400 ohm load. This
reference signal is transformerĆisolated and shortĆcircuit protected
through acurrent limiter. The module also receives 11.8 volt rms sine
and cosine signals from the resolver, as well as the 26 volt rms
reference.
There are 5 LEDs on the faceplate of the module. The top LED,
labeled DIRECTION, indicates the direction of rotation of the resolver.
When it is on, the resolver is rotating clockwise. The next LED,
labeled FDBK OK, indicates that the resolver is connected to the
module. The next LED, labeled CCLK OK, indicates that the common
clock is on. The fourth LED, labeled IPS OK, indicates that the
isolated power supply is working. Finally, the bottom LED, labeled
OK, indicates whether the common clock is on and the isolated
power supply is functional. See figure 2.3.
100k
9
10
+12V +12V
2200 pf
0V
40106
1
M
Figure 2.1 Ć External Strobe Input Circuit
9
10
9
10
Figure 2.2 Ć Low Leakage Requirement for Devices Driving Strobe Input