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Rockwell Automation Publication 20P-TG001C-EN-P - February 2018
Chapter 2
Component Test Procedures
Check the Resolver Interface Board
The resolver feedback option module uses the resolver feedback board for
resolver connections, and the resolver interface board for external power,
status, feedback board reset, and encoder output connections.
If a “Resolver Error” (F93) fault occurs and the resolver wiring and
configuration are correct, the light-emitting diodes (LEDs) and testpoints on
the resolver interface board can be used to verify that the board is not damaged.
• Verify that the following LEDs are functioning as expected. See
for LED locations and switch settings.
If any of the applicable LEDs fail to turn on when control power is applied,
verify that the resolver interface and resolver feedback boards are properly
seated on the appropriate connectors (XRE, P2, P3). If problems persist,
replace the resolver interface and/or resolver feedback board.
• Measure the signal voltage at the testpoints as indicated in the following
table. See
for testpoint locations.
If any of the voltage measurements fails, replace the resolver interface board.
LED
Code
LED
Color
On State
Off State
D3
Red
24V overload (fuse F1 blown). This fuse is self-
resetting when it returns to normal operating
temperature.
24V supply is OK.
D10
Green
12V supply is OK.
Loss of 12V power.
D11
Green
Resolver feedback board voltage is OK.
Voltage error on resolver feedback board.
D12
Blue
Switch S1 is set to +24V for encoder signal
output on TB2.
S1is not set for +24V.
D16
Yellow
Switch S1 is set to +12V for encoder signal
output on TB2.
S1 is not set for +12V.
D18
Green
Switch S1 is set to +5V for encoder signal output
on TB2.
S1 is not set for +5V.
D26
Red
Resolver feedback board is in reset mode.
Resolver feedback board not in reset
mode.
Testpoint to
Testpoint Measurement
+12V
…
0V12
12V DC ±5%
-12V
…
0V12
-12V DC ±5%
+24V_VI
…
0V24
24V DC ±5%
+5V
…
0V5
5V DC ±5%