Troubleshooting - powersoft M-Drive Service Manual

M-Drive | SERVICE MANUAL
4. Discharging the Module's Capacitors Bank:
Highlighted on (Fig. 3) are pins 1/2 and 19/20.
Connect one end of a 60w Light Bulb
(Fig. 3)

5. Troubleshooting:

Checking the Output IGBTs
With a Multimeter set to Ohm, check for any short circuit
in the Output IGBTs by probing the points highlighted on
(Fig. 4)
DSP Board interface connectors
Insert the DSP Board in the SO1000 socket.
Connect the Interface to the DSP Board.
Proceed by connecting the
Voltage Cable to the PL2 connector on the module and
replicate the connections on the portrayed External
Power Supply.
Slowly increase the output voltage on the power supply
to +12Vdc and -12Vdc (Fig. 5).
Check the absorption, fans and interface must be
disconnected:
Red +18Vdc: 40mA
Black -18 Vdc: 40mA
Green +12Vdc: 470mA ± 15%
Blue -12Vdc: 50mA ± 15%
The following page contains further testing procedures to
be completed with the use of an oscilloscope.
Zoom on the waveforms to check the shape of the
resulting waves.
Out Of Range Values, Blown IGBTs are signs of
malfunction in the AMP section, please order the
KT000852.R KIT M-DRIVE AMP
6
as indicated on
PFC2-PFC4 AMP AUX
1CH.
(Fig. 3)
Ω
(Fig. 4)
–12 V 55 mA
–18 V 40 mA
(Fig. 5)
Ω
+12 V 470 mA
+18 V 40 mA