108 - 23/May/97
FIG. 4.11 - DBM Module - RF red LED on
Resolver Fault
YES
NO
Is the resolver
shield connection
OK?
YES
Internal fault
YES
NO
Resolver fault or
connection not OK at
motor side
Sin and cos signals
present on J4, J5, J6
(6.5 Vpp max, 10 kHz
for Vickers resolver)?
NO
Fault on oscillator
circuit
Vref carrier present on J4, J5,
J6 (20 Vpp, 10 kHz)?
YES
NO
Make correct
connection
NO
Other resolver
connection OK?
YES
Random fault ?
Red LED RF = ON
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