Ametek 801RP Series User And Programming Manual page 44

7.3.6. No Output, No Front Panel LEDs
Is LED on P.F.C. unit lit? OK if flickering with no load on output. If not lit, check input fuse
and wiring on P.F.C. module. P.F.C. module is the one in the center. If LED is not lit and
power is available at the EMI filter, replace P.F.C. module.
If LED is lit, proceed to DC-DC converter. The DC-DC converter is on the left hand side
when looking at the front. Are LEDs lit on the DC to DC board?
YES
If LEDs on the DC-DC board are lit
and front panel LEDs are not lit, the
problem is probably in the large
ribbon cable that runs between the
DC-DC and the AC converter.
7.3.7. No Output LEDs on Front are Lit
Plug unit in and switch on. Are all the LEDs lit on the DC-DC board? 3 amber LEDs (DS3,
DS4, DS5) if one or more of these LEDs is not lit the trouble is on the DC-AC board. Unplug
the cable to the DC-AC module (after safely removing power). If all the LEDs are lit after
power up, replace the DC-AC module as it has a shorted gate drive and probably blown
power transistors.
Red and green LEDs, DS6 and DS7, on the back of the board provide power to DC-AC and
the oscillator board. If either of these are not lit, switch off power, remove large ribbon cable
from DC-DC converter and power up again. If LEDs are lit, the problem is on the DC-AC or
the oscillator board. If the LEDs remain off, replace the DC-DC board.
If LED, DS8, is not lit, no power will be available to run the DC converter drive logic. Replace
DC-DC module.
LED, DS2 (red), indicates 24V fan power available.
LED DS200, will be lit if the DC converter is running. If DS200 is not lit check fuse F1 on the
DC-DC board as in paragraph 7.3.4 above.
If all LEDs are lit and the LED output indicator is lit but no output, then suspect the relay on
DC-AC board.
If all 8 LEDs are lit on the DC-DC converter then the problem is on the DC-AC module.
Switch off, then check wiring from the DC-AC board output to the output sockets on the front
panel. If this is OK check the fuse, F2, on the DC-AC module. Switch off. Remove two
screws from the underside of the enclosure to gain access to the module and F2. If the fuse
32
Check fuses on the DC-DC converter board. There is a 3
AMP (F2) fuse and a 10 Amp (F1) fuse both located in the
center of the PC board. You will have to remove the two
screws at the bottom of the unit to remove the module in
order to replace the fuses.
TURN OFF THE UNIT AND WAIT AT LEAST 10 MIN-
UTES BEFORE REMOVING MODULE.
If fuses are blown and there are signs of burn marks on the
components, do not replace fuses and power up. Replace
DC-DC module.
March 2011
NO
RP Series