Troubleshooting And Maintenance; Faults And Alarms; Solution For The Most Frequent Problems; Information Necessary For Contacting Technical Support - WEG CF W100 Serie Manual Del Usuario

Troubleshooting and Maintenance

6 TROUBLESHOOTING AND MAINTENANCE

6.1 FAULTS AND ALARMS

NOTE!
Refer to the CFW100 quick reference and the programming manual for further information on each
fault or alarm.

6.2 SOLUTION FOR THE MOST FREQUENT PROBLEMS

Problem
Motor will not start Incorrect wiring
Incorrect settings
Fault
Motor stall
Motor speed oscillates Loose connections
Too high or too low motor Incorrect settings (reference
speed limits)
Motor nameplate
Display is off Keypad connections
Power supply voltage
Mains supply fuses open

6.3 INFORMATION NECESSARY FOR CONTACTING TECHNICAL SUPPORT

For technical support or servicing, it is important to have the following information in hand:
Inverter model.
„
Serial number and manufacturing date listed in the product nameplate (refer to
„
LABEL on page 11).
Installed Software version (refer to P023).
„
Data on the application and inverter settings.
„

6.4 PREVENTIVE MAINTENANCE

DANGER!
Always turn off the mains power supply before touching any electrical component associated to the
inverter.
High voltages may still be present even after disconnecting the power supply. To prevent electric
shock, wait at least ten minutes after turning off the input power for the complete discharge of the
power capacitors. Always connect the equipment frame to the protective ground (PE). Use the
adequate connection terminal at the inverter.
ATTENTION!
The electronic boards have electrostatic discharge sensitive components.
Do not touch the components or connectors directly. If necessary, first touch the grounded metallic
frame or wear a ground strap.
Do not perform any withstand voltage test: if necessary, consult WEG.
26 | CFW100 G2
Table 6.1: Solution for the most frequent problems
Point to be Verified
1. Check all power and control connections
1. Check if the parameter values are correct for the application
1. Check whether the inverter is disabled due to a fault condition
1. Decrease the motor overload
2. Increase P136, P137 (V/f)
1. Stop the inverter, turn off the power supply, check and tighten all the power
connections
2. Check all the internal connections of the inverter
1. Check whether the values of P133 (minimum speed) and P134 (maximum
speed) are properly set for the used motor and application
1. Check whether the used motor matches the application
1. Check the inverter keypad connection
1. Rated values must be within the limits specified below:
110 - 127 V power supply: Minimum: 93 V / Maximum: 140 V
200 - 240 V power supply: Minimum: 170 V / Maximum: 264 V
1. Replace the fuses
Corrective Action
Section 2.4 IDENTIFICATION