WEG CFW-09 User Manual page 231

CHAPTER 7 - DIAGNOSTICS AND TROUBLESHOOTING
232
SOLUTION:
Reduce the switching frequency (P297).
Connect a load reactor in series with the motor supply line. Refer to item
8.8.
(8) This error occurs when the comparison [N = N*] is greater than the
maximum admissible error (set at P292) for a period longer than that set at
P351. When P351 = 99.9 the detection logic for the error E33 is disabled.
This error is only active in Vector Modes (P202 = 3 or 4).
(9) If the CFW-09 remains at torque limitation for a period longer than the value
set at P352 the inverter will trip with an error code E34. When P352 = 999
the detection logic for the error E34 is disabled. This error is only active in
Vector Modes (P202 = 3 or 4).
NOTE!
When a fault occurs the following steps take place:
E00 to E08, E10, E11, E12, E13, E15, E17, E32, E33, E34 and E71:
- "No Fault" relay drops "out";
- PWM pulses are stopped;
- The LED display indicates the fault code;
- The LCD display indicates the fault code and description;
- The "ERROR" LED flashes;
- The following data is stored in the EEPROM:
- Speed reference via Keypad or E.P. (Electronic Potentiometer), if
the function "Reference Backup" is active (P120 set to 1 – On);
- Fault code;
- The status of the I x t function (motor overload);
- The status of the powered time (P042) and Enabled Time (P043).
E09:
- Does not allow inverter operation.
E24:
- Indicates the code on the LED display plus and description on the LCD display;
- It blocks the PWM pulses;
- It doe nor permit motor driving;
- It switches OFF the relay that has been programmed to "Without Error";
- It switches ON the relay that has been programmed to "With Error".
E31:
- The inverter continues to operate normally;
- It does not accept the Keypad commands;
- The fault code is indicated on the LED display;
- The LCD display indicates the fault code and description;
- E31 is not stored in the fault memories (P014 to P017 and P060 to P065).
E41:
- Does not allow inverter operation;
- The fault code is indicated on the LED display;
- The LCD display indicates the fault code and description;
- The "ERROR" LED flashes.