ABB PSTX30 Installation And Commissioning Manual page 141

10.6 Warning indication shown on
screen
For Warnings description, see chapter 7.20 Warnings
group 0-4.
Table 4 Warning indication
Status
Current imbalance warning
Over voltage warning
Under voltage warning
EOL time-to-trip warning
EOL warning
Total Harmonic Distortion (THD(U)) warning
Voltage imbalance warning
Power factor underload warning
Current underload warning
Faulty fan warning
Locked rotor warning
Thyristor overload warning
Short circuit warning
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Cause/Possible cause
Current imbalance between the phases has exceeded the warning level.
The RMS phase to phase voltage has exceeded the adjustable value.
The RMS phase to phase voltage has decreased below the adjustable
value.
The predicted time before EOL trip has reached the warning level.
The calculated motor temperature has exceeded the warning level.
THD(U) has exceeded the warning level. Check the quality of the
network.
Voltage imbalance between the phases has exceeded the warning level.
The power factor has decreased below the adjustable value during
continuous operation.
The motor current has fallen below the warning level.Check that the
motor current parameter (Ie) is set correctly.
The fans are not working properly because dust or mechanical blocking
The sofstarter could be overheated.
Check that the fans are working and rotating freely. The blades shall
rotate without any resistance.
CAUTION
The fans may only be checked when in voltage free state.
If the fault remains, contact ABB sales office.
The motorcurrent has exceeded the warning level. A damaged bearing or
a stuck load could be possible causes.
The calculated thyristor temperature has exceeded the
warning level.
There is an internal short circuit and the softstarter is running in limp
mode. See chapter 7 Functions.
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