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Chapter 4 Wizards Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Cell Test Wizard

Cell Test Options

The Cell Test wizard execu tes either the Fiber-Optic T est or the Bridge Cell Test
depending on the value of the Ty pe of Cell Test paramet er. Selecting one of the Cell
Tests and proceeding t o the next Wizard page sets the Type of Cell Test parameter to
the appropri ate value.

Fiber-Optic Test

The Fiber-O ptic Test verifi es that the gate dri ve fiber-optics be tween the fiber -optic
interface board (IS200FOSA) and the IGBT gate driver boards (IS200IGDM) are
properly connected. The test does not provide any automated diagnostic information.
Verification of th e fiber-optic connections is done by visual inspection of the LED
lighting se quence on the IGDM ga te driver board s and is the responsibility of the
user. The correct lighting seq uence is described in the Fiber- Optic Test help section.
Read all of the Fiber-Op tic Test instructions in the Fibe r-
Optic Test help section before running the test. The user must
be familiar with the correct LED lighting sequence in order to
determine if the fiber-optics are connected properly.

Bridge Cell Test

The Bridge Cell Test performs the following tests:
• Short Circuit Detection Test verifies that there are no undesired cond uctive
paths within the inver ter power bridge and the load conn ected to it.
• Open Circuit Detection Test verifies that all of the expected conductive pa ths in
the inverter bridge ar e available and that the shunt feedba cks are valid.
• Voltage Feedback Evaluation verifies that all the voltage feedbacks ar e being
measured correctly.
• Dynamic Brake Cell Test performs a sh ort circuit detection test, open circuit
detection test, and voltage feedback evaluation for the dynamic brake assembly.
Note The Dynamic Brake Cell Test is only performed if the drive includes the
dynamic brake option.