Faults And Alarms - WEG CFW-11 Applications Manual

Quick Parameter Reference, Faults and Alarms

FAULTS AND ALARMS

Fault/Alarm
A750:
Lightweight Operation
A752:
Coast to Stop
A754:
Fast Stop
A756:
Emergency Stop
A758:
Stop by Simultaneous Commands
A760:
Forward Slowdown Limit Switch
A762:
Reverse Slowdown Limit Switch
A764:
Stop Forward Limit Switch
A766:
Stop Reverse Limit Switch
A770:
Momentary Overload
F775:
Inverter in Torque Limit
F777:
Improper Operation
Description
The Crane Horizontal Motion application is
operating in the lightweight mode.
The general enable signal
removed, releasing the motor to cast down.
The fast stop command has been activated. Digital input DI3 with logical level "0"
The emergency stop command has been
activated.
The application has been stopped because
of the simultaneous activation of the
hoisting and the lowering commands.
The forward slowdown limit switch has
been actuated.
The reverse slowdown limit switch has been
actuated.
The stop forward limit switch has been
actuated.
The stop reverse limit switch has been
actuated.
An attempt a load heavier than the
maximum operational capacity of the
application has been detected
The frequency inverter reached the adjusted
torque limit because of excessive load or
demanded force.
Several consecutive alarm
occurred during a certain period, disabling
the frequency inverter.
Possible causes
The motor speed is greater than P1039 and the
motor current is less than P1038 when a load
forward or reverse command is being executed.
has been Digital input DI3 with logical level "0"
Digital input DI3 with logical level "0"
Digital inputs DI1 and DI2 with logical level "1"
The digital input DI5 or DI9 is with logical level
"0". The digital input for that function is defined
by the parameter P1025.
The digital input DI5 or DI6 or DI10 is with logical
level "0". The digital input for that function is
defined by the parameter P1025.
The digital input DI6 or DI11 is with logical level
"0". The digital input for that function is defined
by the parameter P1025.
The digital input DI6 or DI12 is with logical level
"0". The digital input for that function is defined
by the parameter P1025.
The motor current during the forward or reverse
stage is greater than or equal to the value
adjusted in P1052.
The difference between the actual speed and the
speed reference is greater than or equal to the
hysteresis value adjusted in P1028.
messages The number of consecutive alarms generated
during a certain period is greater than or equal to
the value adjusted in P1058.
Crane Horizontal Motion | 9