Drives Service & Support > 1336F > Fault Finder

Fault Number: 29
Fault Display: Hertz Err Fault
Fault Name: Hertz Error Fault
Description: This fault indicates that there is not a valid operating frequency.
Corrective Action: Any or all of the following can be done to correct this fault:

1. [Maximum Freq] is less than [Minimum Freq]. Change accordingly.

2. Skip Frequencies and skip bandwidth eliminate all operating frequencies. Change accordingly.

3. Analog input signal speed reference has been lost. Check for proper potentiometer, 2-10 volt, or 4-20mA signal to the drive on TB2.

Fault can be disabled by parameter 150 (4-20mA Loss Select), if you are using a 4-20mA analog signal or a 2-10 volt signal, or potentiometer. If you are using a potentiometer, you will receive an Open Pot Fault (F09) if there is a problem with the potentiometer.