WEG ECW500 - Instructions to Clean the Product; Solving the most Commom Problems

Maintenance .
72 | ECW500
11.4 INSTRUCTIONS TO CLEAN THE PRODUCT
When you need to clean the ECW500, follow the instructions below:
Ventilation Spaces
■ Turn off the ECW500 power supply and wait for 20 minutes.
■ Remove all dust buildup on the ventilation inlets using a plastic brush or a soft cloth.
■ Remove the dust buildup on the heatsink fins using compressed air.
Electronic boards
■ Turn off the ECW500 power supply and wait for 20 minutes.
■ Remove the dust buildup on the boards using an anti-static brush or ion compressed air gun (Example:
Charges Burtes Ion Gun (non-nuclear) reference A6030-6DESCO).
■ If necessary, remove the board from the ECW500.
■ Always use a grounding strap.
11.5 SOLVING THE MOST COMMOM PROBLEMS
ATTENTION!
Only trained and qualified staff must perform repairs and tests on the ECW500.
If the instructions in this section are not enough to solve the problems, contact the technical
assistance of WEG for additional information on how to proceed.
ECW500 seems not to be working
If the ECW500 seems not to be working and the HMI will not turn on, check that the electronics power supply is
within the specifications. The ECW500 has two redundant power supply inputs (AC and DC). Refer to the
specification table in chapter 12 Technical Specifications.
HMI frozen or with the message "Communication Lost"
Turn off the power supply of the ECW500 for about 30 seconds and turning it back on. If the problem occurs
during the update of the software of the product, repeat the procedure and reset the parameters to return to
factory default settings.
Voltage generator does not increase
Check the following configurations of the ECW500:
■ Rated voltage set.
■ The voltage reference in the MTVC mode.
■ Parameters indicating the voltage of the primary and secondary of the measurement transformers.
■ The voltage feedback connections of the product to the generator.
■ Check the configurations of the soft starter function. Adjust them, if necessary, according to the application.
■ Check the connections of excitation output (field) of the ECW500.
■ Temporarily disable the LEOC excitation limiter.
Low voltage on the generator in the MTVC mode
Check the following configurations of the ECW500:
■ The voltage reference of the MTVC mode.
■ Parameters indicating the voltage of the primary and secondary of the measurement transformers.
■ The voltage feedback connections of the product to the generator.
■ LEOC over excitation limiter (it must not to be active)
■ The operating mode selected must be MTVC.
■ The knee-point frequency of the LUF underfrequency limiter (it must be below the system frequency).