7
DIAGNOSTICS AND TROUBLESHOOTING
DANGER!
This equipment has high voltages that may cause electric shocks. Only people with properly
qualified and familiar with the MVW3000 Inverter and associated equipment must plan or service
this equipment. In order to avoid the risk of shock, follow all the safety procedures required for
servicing energized equipment.
Do not touch any electrical circuit before ensuring it is de-energized.
Procedures:
1. Operation of the fans and exhausting fans:
Verify the proper operation of the exhausting fans at the top of the rectifier cabinet and the inverter cabinet. The
fans must be running in the same direction and their exhausting action must be perceptible. Verify the proper
operation of the fan at the control cabinet: it must be running and blowing air into the cabinet.
2. Cleaning of the air inlet filters:
Remove the protection grids from the air inlets at the doors of all the cabinets by unbolting them. Remove the
filters and clean, wash or replace them. The amount of accumulated dirt on the filters helps defining the correct
interval between preventing maintenances. Reinstall the filters and bolt the protection grids again.
3. Open the control cabinet and visually inspect the components inside it, verifying them to identify faults or the
need of preventive maintenance with complete stop/de-energization for cleaning or replacement:
Components
Anomalies
Electronic boards
Excessive accumulation dust, oil, moisture, etc. Discolored or darker points due
to excessive heat
Capacitors on electronic
boards
Discoloration, smell, electrolyte leakage, case deformation
Resistors in general
Discoloration or smell
4. Read and write down the following parameters from the HMI:
P0003 - Motor Current
P0005 - Motor Frequency
P0006 - VFD Status
P0022 - Temperature on MVC3 board
P0042 - Time powered counter
P0043 - Time enabled counter
P0067 - Error Register
P0068 - Present Error
P0080 - Date (dd/mm/yy)
P0081 - Hour (24hs).
It may also be necessary the values of parameters related to the number of cells installed on the MVW3000, such
as:
P1000 - DC link voltage of cell U1 to P1035 - DC link voltage of cell W12
P1050 - Temperature on the power module of cell U1 to P1085 - Temperature on the power module of cell
W12
P1155 - Phase U cell status U1 ... Un
P1156 - Phase V cell status V1...Vn
P1157 - Phase W cell status W1...Wn
MVW3000 | 7-67
Summary of Contents for MVW3000 Series
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Page 58: ...1 QUICK REFERENCE OF PARAMETERS AND FAULTS MVW3000 1 52...
Page 62: ...2 SAFETY INSTRUCTIONS MVW3000 2 4...
Page 192: ...6 SPECIAL FUNCTIONS MVW3000 6 4...
Page 262: ...7 DIAGNOSTICS AND TROUBLESHOOTING MVW3000 7 70...
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