AWA Troubleshooting
19. AWA seems to have a flat line display
for the surge test, all other tests work
normally.
Voltage is applied to the coil or motor, and the winding may even arc, yet still a flat line
on the screen.
a. This problem is most often associated with the K2 relay on the 80-123 Fast/AD
board. It may be stuck in the EXT Surge position; thus the surge wave of the AWA
itself does not make it to the A/D converter. Use an ohmmeter to verify integrity, and
replace if faulty. If the AWA is not to be used with the Baker Instrument PP30D, it
can be jumpered out with buss wires across C to N.O.
b. Shorted RG174 BNC coaxial readout cable at P2. Check this connector with an
ohmmeter, it should read approximately 1100 ohms across center to shield when
disconnected from the Fast A/D board.
c. AD/IO control line INT/EXT non-functional on the 80-100 AD/IO board.
d. Connector DB15 J5 knocked loose from the front of the 80-123 Fast A/D board.
e. Welded KC-18 high voltage relay matrix, due to inadvertent connection to “live” AC
mains.
20. AWA will not properly apply a
programmed 6000-volt surge test.
The AWA gives a flat top on the surge display that stops at approximately 5800 volts.
AWA may keep surge testing the motor, until it reaches maximum output, and stops.
Tests above and below.
a. This, in all cases, is due to improper calibration of the surge test. This is best
corrected by one or both of the following methods:
b. Set a target voltage for the programmed surge test of slightly higher or lower than
6000V, in this case 5800V or 6100V. The AWA will use the lower/higher range
settings, which will result in the AWA properly performing the test.
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