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Section 5
Troubleshooting
The Baldor Series 15P Control requires very little maintenance, if any, and
should provide years of trouble free operation when installed and applied
correctly. Occasional visual inspection to ensure tight wiring connections and
cleaning to remove dust, dirt, or foreign debris which can reduce heat
dissipation should be considered.
Operational failures called faults are displayed on the LED's as they occur.
Procedures in this section describe how to recognize a fault and restore
normal operation.
Before service is performed, all input power must be removed from the control
to avoid electrical shock hazard. Most troubleshooting can be performed
using only a digital voltmeter having an input impedance exceeding 1
megohm. In some cases, an oscilloscope with 5 MHz minimum bandwidth
may be useful. Before consulting the factory, check that all power and control
wiring is correct and installed per the recommendations given in this manual.
POWER LED
FWD LED
REV LED
STOP LED
Fault Code Determination
When the Fault LED is blinking, a failure has been detected. One of five fault
codes is displayed by the flashing Fault LED. To determine the fault code,
carefully observe the blinking pattern. The blinking (2Hz rate) should stop for
1.5 seconds. This 1.5 second pause is the start of the display sequence.
Count the number of blinks that occur between the 1.5 second pauses. One
blink = Fault code 1, two blinks = fault code 2 etc. When the fault code is
determined, refer to Fault Code Descriptions.
Fault Code Descriptions
Five fault codes can be displayed. Carefully examine all LED's (Power, Fault,
FWD, REV and Stop) to determine the cause of the fault condition. Press
Stop to reset the control.
5-1 Troubleshooting
Figure 5-1 LED Identification
POWER
FAULT
50
40
60
FWD
30
70
REV
20
80
10
90
STOP
0
100
% Speed
Fault
LED
MN715P
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