Troubleshooting - ABB 827E Product Manual

Troubleshooting

Troubleshooting of the system is limited to performing the start-up and operational checks. If
further assistance is required, contact the ABB Field Service at the numbers listed in the front matter
of this manual.
Whenever a malfunction occurs, the first step must be a good physical inspection of the system. Try
to find out whether the malfunction is caused by the system or by its environment (e.g. temperature,
humidity or load). In addition, there may be other situations such as:
• Input Voltage is missing/ not at the correct level.
• Input and Output connections are not securely fastened.
• Connectors are not secure.
• Blown fuses.
• Tripped circuit breakers.
Always check these external factors before concluding that your system is faulty. If, for instance, the
unit stops due to overheating it may have been overloaded, the ambient temperature may be too
high, the ventilation slots could be blocked or a cooling fan may be out of order.
It is possible that a voltage setting for the plant was inadvertently set incorrectly. To ensure this is
not the problem, return the system to its factory default settings. Refer to the Adjusting Setpoints
section for setpoint defaults and adjustments.
To verify that the system is correctly cabled, refer to the Mechanical Installation and Electrical
Connections sections.
System Controller Status (STAT) screens provide information useful in troubleshooting.
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