KB Electronics KBVF-23P - Manual (Page 36)

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*The fault must be cleared before the drive can be reset.
Fault Automatic Start Mode (Factory Setting)
Undervoltage
Drive will automatically start after the bus voltage returns to the operational level or when the
drive is first turned on (power up).
Overvoltage Drive will automatically start after the bus voltage returns to the operational level.
Short Circuit Drive will automatically start after the short circuit is removed.
I 2 t Drive must be manually restarted.
TABLE 3 – FAULT RECOVERY AND RESETTING THE DRIVE*
11.3 Restarting the Drive After an I
2
t Fault Has Cleared – The drive can be restarted after an I
2
t
Fault has cleared by any of the following methods.
Note: If an I 2 t Fault occurs, the motor may be overloaded. Check the motor current with an
AC RMS responding ammeter. Also, the CL setting may be set too low. See Section 13.7, on
page 42.
1 Disconnect and reconnect the AC power (approximately 15 seconds). The “ST” LED must
change from quick flashing red to flashing red/yellow.
2 Set the Main Speed Potentiometer to zero (fully counterclockwise).
Note: In order to be able to reset the drive by setting the Main Speed Potentiometer to zero,
it is necessary to have the MIN Trimpot set to zero (fully counterclockwise).
3 Open and close the Enable switch or contact. See Section 9.8, on page 35.