ABB PST - Protection indication

164 Low Voltage Products & Systems
AC 1006.9 - 5/03 ABB Inc. • 888-385-1221 • www.abb-control.com
11:5 Protection indication
Chapter 11 - Troubleshooting
Status Possible cause
• Check and correct the reason for
the overload. Check that current
limit level is not set too low.
• Check that the ramp time for start is
not too long.
• Check that correct overload class is
used.
• Check that parameter Setting Ie is
correct.
• Check and correct the reason for
the overload.
• Check and correct the reason for
overload.
• Check that current limit level is not
set too low.
• Check that the ramp time for start is
not too long.
• Check that correct overload class is
used.
• Check that parameter Setting Ie is
set to 58% ( 1/ √3)) of the rated
motor current.
• Check and correct the reason for
the overload.
Continuous run
Inside Delta
At start
Continuous run
Solution
Motor overload Protection
In line
At start
The motor has been exposed to
an overload condition because the
current over a certain time is too
high.
(The load on the motor shaft is too
hi
g
h
)
Power on ProtectionFault
Prot Motor OL
Reset Back