User Manual - Rev AJ California Instruments
7.3.3 Overload Light is On
CAUSE SOLUTION
Un ded move overl check CL sit is overloa Re oad or etting
Un d to lect correct range. it is switche high voltage range. Se voltage
7.3.4 Distor ut ted tp Ou
CAUSE SOLUTION
Power source is grossly overloaded. Reduce load
The crest factor of the load exceeds 3:1 on
the low range or 5:1 on the high range.
Reduce load current peaks by reducing
load.
7.3.5 Unit Shuts Down after 1-2 Seconds
CAUSE SOLUTION
Output shorted Remove output short
Output grossly overloaded. Remove overload.
PFC IGBT module failure Have power module serviced
Operating load with too high inrush or start
up currents.
Consult factory for application advice.
7.3.6 No Output and No Lights on Front Panel
CAUSE SOLUTION
Input circuit breaker switched off. Switch the breaker on.
No input power to F1, F2 and F3. Ensure 3 phase power is getting to input
fuses.
LV Power Supply failure Have LV supply serviced.
7.3.7 No Output But Front Panel controller is active
CAUSE SOLUTION
“OUTPUT ON” button is turned off. Press OUTPUT ON so that “ON” LED is
lit.
REMOTE INHIBIT pins 5 & 6 at TB3 on
rear panel are shorted together.
Check polarity setting or RI Mode. Use
OUTPut:RI[:LEVel] LOW/HIGH command
to set RI mode to high or low.
Current limit programmed down or to zero. Program current limit higher.
Voltage programmed down or to zero. Turn amplitude control up.
MX Series 177
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