Rockwell Automation 7763 Medium Voltage OneGear SMC Flex Motor Controller (10-15 kV) User Manual
Page 98
98
Rockwell Automation Publication 7760-UM001D-EN-P - October 2014
Chapter 8
Troubleshooting
The following flowchart is provided to aid in quick troubleshooting.
Figure 41 - Troubleshooting Flowchart
Table 35 - Fault Display Explanation
IMPORTANT
In the case of the 1503E, refer to applicable documentation from OEM for
troubleshooting or repair. This manual should be utilized in conjunction with
the OEM supplied documentation, and is suitable for commissioning,
programming, calibration, metering, serial communications, diagnostics,
troubleshooting and maintenance of a standard solid-state controller.
YES
Fault Displayed?
NO
Define Nature
of Trouble
Motor will not start –
no output voltage to
motor
Motor rotates but
does not accelerated
to full speed
Motor stops
while running
Irregular
Starts
Miscellaneous
situations
See
See
See
See
See
See
Display
Fault Code
Possible Causes
Possible Solutions
Line Loss (with phase indication)
1, 2, and 3
• Missing supply phase
• Motor not connected properly
• Improper or missing current or voltage
feedback
• Check for open line (e.g., blown line fuse)
• Check for open load lead
• Check current transformer connections and module programming
• Check voltage sensing board connections and module programming
• Check ribbon cable connections between Interface Board and Control
Module
• Check voltage feedback circuits
• Consult factory
Shorted SCR
4, 5, and 6
• Shorted Power Module
• Check for shorted SCR, replace if necessary (See
)
Open Gate (with phase indication)
7, 8, and 9
• Open gate circuitry
• Loose gate lead
• Perform power supply tests (
• Check gate lead connections to the gate driver boards and fiber optics