26. Thyristor Module
The Thyristor module is composed of both diodes and silicon-controlled
rectifiers. The Thyristor is the main component which contributes to the
conversion of the AC input voltage to the DC voltage used to power the
servomotor.
P N
27. Thyristor Module Check
Test Equipment – Digital Multimeter
! Multimeter must be in Diode position !
The Thyristor module is checked using the connector end of its
wiring harness. Make sure you check the wires corresponding to the
Thyristor module (i.e. gray and green)
Step #
Multimeter
Positive Lead
Multimeter
Negative Lead
Expected
Reading (Diode
Check)
1 R, S, T P OL
2 N R, S, T 0.5
R, S, T
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