Baldor VS1STS Series Installation & Operating Manual page 53

Table 9-1 Fault Descriptions and Corrective Actions Continued
 Faulty Thermistor on Heatsink
Fault Code
External Trip (on Digital Input 3)

Comms Loss Trip

Input Phase Loss Trip

Phase Imbalance

 Internal Memory Fault

2
 Autotune Failed

5
 Spin Start Failure
 Over Torque Trip
4-20mA Input Signal Loss
2 
MN767S
Description
Refer to your Baldor District Office.
Corrective Action
E-trip requested on digital input 3. Normally closed contact has
opened for some reason.
If motor thermistor is connected check if the motor is too hot.
Check communication link between drive and external devices.
Make sure each drive in the network has its unique address.
Drive intended for use with a 3 phase supply has lost one input
phase. Check incoming supply and fuses.
Mains incoming supply voltage has an imbalance of >3% for over
30 seconds. Check incoming supply and fuses.
Parameters not saved, defaults reloaded.
Try again. If the problem re-occurs, refer to your Baldor District
Office.
Measured motor stator resistance varies between phases. Ensure
the motor is correctly connected and free from faults. Check the
windings for correct resistance and balance.
Measured motor stator resistance is too large. Ensure the motor
is correctly connected and free from faults. Check that the power
rating corresponds to the power rating of the connected drive.
Measured motor inductance is too low. Ensure the motor is
correctly connected and free from faults.
Measured motor inductance is too large. Ensure the motor is
correctly connected and free from faults. Check that the power
rating corresponds to the power rating of the connected drive.
Measured motor parameters are not convergent. Ensure the motor
is correctly connected and free from faults. Check that the power
rating corresponds to the power rating of the connected drive.
Spin start function (P2-18=1) failed to detect motor speed
Check motor and connections. Ensure motor speed is less than
maximum speed (P1-06). Make sure motor base frequency (P1-03)
is <100Hz.
The user programmable torque limit has been exceeded. Refer to
the Baldor District Office for further information.
The level of the 4-20mA signal applied to analog input 2 (Terminal
4) has dropped below the minimum threshold of 3mA. Check for
wiring or signal transducer faults.
Troubleshooting 9-3