Instruction manual
Table Of Contents
- Preface
- Safety Precautions
- Table of Contents
- Warnings, Cautions and Conformity
- Chapter 1 Drive Model Identification
- Chapter 2 Mounting and Wiring the Inverter
- Chapter 3 Operation using the Keypad
- Chapter 4 Function Codes / Parameters
- Chapter 5 Check Motor Rotation and Direction
- Chapter 6 Speed Reference Command Configuration
- Chapter 7 Operation Method Configuration (Run / Stop)
- Chapter 8 Motor and Application Specific Settings
- Chapter 9 Using PID Control for Constant Flow / Pressure Applications
- Chapter 10 Troubleshooting
- 10.1 Protective Functions
- 10.2 Before Proceeding with Troubleshooting
- 10.3 If Neither an Alarm Code Nor "Light Alarm" Indication Appears on the LED Monitor
- 10.4 If an Alarm Code Appears on the LED
- 10.5 If the “Light Alarm” Indication Appears on the LED Monitor
- 10.6 If an Abnormal Pattern Appears on the LED Monitor except Alarm Codes and "Light Alarm" Indication
- 10.7 If the Inverter is Running on Single-Phase Power
- Chapter 11 Specifications
10-4
10.2 Before Proceeding with Troubleshooting
If any of the protective functions has been activated, first remove the cause. Then, after checking that the all run
commands are set to OFF, release the alarm. If the alarm is released while any run commands are set to ON, the
inverter may supply the power to the motor, running the motor.
Injury may occur.
- Even if the inverter has interrupted power to the motor, if the voltage is applied to the main circuit input terminals
L1/R, L2/S and L3/T, voltage may be output to inverter output terminals U, V, and W.
- Turn OFF the power and wait at least five minutes for inverters of 40 HP or below, or at least ten minutes
for inverters of 50 HP or above. Make sure that the LED monitor and charging lamp are turned OFF. Further,
make sure, using a multimeter or a similar instrument, that the DC link bus voltage between the terminals P (+) and
N (-) has dropped to the safe level (+25 VDC or below).
Electric shock may occur.
Follow the procedure below to solve problems.
(1) First, check that the inverter is correctly wired, referring to Chapter 2, Section 2.3.4 "Wiring of main circuit terminals
and grounding terminals."
(2) Check whether an alarm code or the "light alarm" indication ( ) is displayed on the LED monitor.
If neither an alarm code nor "light alarm" indication ( ) appears on the LED monitor
Abnormal motor operation Go to Section 10.3.1.
[1] The motor does not rotate.
[2] The motor rotates, but the speed does not increase.
[3] The motor runs in the opposite direction to the command.
[4] Speed fluctuation or current oscillation (e.g., hunting) occurs during
running at constant speed.
[5] Grating sound is heard from the motor or the motor sound fluctuates.
[6] The motor does not accelerate or decelerate within the specified
time.
[7] The motor does not restart even after the power recovers from a
momentary power failure.
[8] The motor abnormally heats up.
[9] The motor does not run as expected.
Problems with inverter settings Go to Section 10.3.2.
[1] Nothing appears on the LED monitor.
[2] The desired menu is not displayed.
[3] Data of function codes cannot be changed.
If an alarm code appears on the LED monitor Go to Section 10.4.
If the "light alarm" indication ( ) appears on the LED monitor Go to Section 10.5.
If an abnormal pattern appears on the LED monitor Go to Section 10.6.
while neither an alarm code nor "light alarm" indication ( ) is displayed
For problems that could be caused by running the inverter on single-phase power Go to Section 10.7.
If any problems persist after the above recovery procedure, contact your TECO-Westinghouse Motor Company
representative.