121 • Trouble Shooting
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14.3
Firing Test
The purpose of this test is to check that the firing system of all thyristors functions properly.
This procedure requires control supply voltage only (No need for mains three phases).
Disconnect mains. Verify all safety issues are
resolved.
Open 10 hexagon head white plastic screws
holding the front cover of all 3 phases.
Dismantle front cover of all three phases
Identify 6 green LEDs and 6 red LEDs as
shown in the picture.
Number of LEDs varies for different voltages
models.
Program input #7 to TEST. (Remember to
store the parameter!) Refer to section
7.8.7
page 73.
Connect control input voltage to terminal #7.
The Test LED on the control keypad will lit.
Refer to section
5.12 page 37.
Press the Mode key until the following appears
in the display :
FIRING TEST
DISCONNECT MAINS
Green
LEDs
Red
LEDs
Press the Select button.
The display will show:
FIRING PWR SUPPLY
CHECK GREEN LEDS
