ITT PumpSmart PS220, Configuration And Operation Manual

Page: 195 / 300

PS220 Configuration & Operation Guide
PS220 194
Functions &
Features
Scalar Test/Control
Scalar Test/Control
Scalar control is a motor control method that does not rely on motor feedback when the standard ABB
ACS880 drive is running. This control mode can only be used as a method to diagnose electrical faults as-
sociated with the “Load-Side” or the motor connections of the drive. The PS220 may not function properly
using this Motor Control Mode.
The “Scalar Test” will need to be performed in order to determine:
1. There may be a faulty component in the base ABB ACS880 Variable Frequency Drive (VFD).
2. There is an electrical problem with either the Motor connection or the Motor itself.
Typical examples of these faults will be:
1. Overcurrent
2. Motor Phase
3. Short Circuit
4. Earth Leakage
5. IGBT Overload
The Scalar Test will require the following steps to be performed.
1. Power down the drive.
2. Disconnect all of the Motor leads and the ground from the PS220.
3. Power up the drive.
When the power is restored, and the display shows the Home View:
1. Access Parameter Group 99.
2. Configure Parameter 99.04 to Scalar.