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7.3.3
Overload Light is On
Unit is overloaded
Unit is switched to high voltage range.
7.3.4
Distorted Output
Power source is grossly overloaded.
The crest factor of the load exceeds 3:1 on the low
range or 5:1 on the high range.
7.3.5
Unit Shuts Down after 1-2 Seconds
Output shorted
Output grossly overloaded.
PFC IGBT module failure
Operating load with too high inrush or start up
currents.
7.3.6
No Output and No Lights on Front Panel
Input circuit breaker switched off.
No input power to F1, F2 and F3.
LV Power Supply failure
7.3.7
No Output But Front Panel controller is active
"OUTPUT ON" button is turned off.
REM OTE INHIBIT pins 5 & 6 at TB3 on rear panel are
shorted together.
Current limit programmed down or to zero.
V oltage programmed down or to zero.
MX15
CAUSE
CAUSE
CAUSE
CAUSE
CAUSE
SOLUTION
Remove overload or check CL setting
Select correct voltage range.
SOLUTION
Reduce load
Reduce load current peaks by reducing load.
SOLUTION
Remove output short
Remove overload.
Have power module serviced
Consult factory for application advice.
SOLUTION
Switch the breaker on.
Ensure 3 phase power is getting to input fuses.
Have LV supply serviced.
SOLUTION
Press OUTPUT ON so that "ON" LED is lit.
Check polarity setting or RI M ode. Use
OUTPut:RI[:LEV el] LOW /HIGH command to set RI
mode to high or low.
Program current limit higher.
Turn amplitude control up.
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