Wegner Crane CFW500 series Applications Manual - page 11
Quick Parameter Reference, Faults and Alarms
Crane | 11
FAULTS AND ALARMS
Fault/Alarm
Description
Possible causes
A750:
Lightweight Operation (Vertical)
The Crane Vertical Motion application is
operating in the lightweight mode.
The motor speed is greater than P1039 and the
motor current is less than P1037 when a load
hoisting command is being executed or less than
P1038 when a load lowering command is being
executed.
A750:
Lightweight Operation (Horizontal)
The Crane Horizontal Motion application is
operating in the lightweight mode.
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.
A752:
Coast to Stop
The general enable signal has been
removed, releasing the motor to cast down.
Digital input DI2 (P1023=7) or DI3 (P1023≠7)
with logical level “0”
A754:
Fast Stop
The fast stop command has been activated. Digital input DI2 (P1023=7) or DI3 (P1023≠7)
with logical level “0”
A756:
Emergency Stop
The emergency stop command has been
activated.
Digital input DI2 (P1023=7) or DI3 (P1023≠7)
with logical level “0”
A758:
Stop by Simultaneous Commands
The application has been stopped because
of the simultaneous activation of the
hoisting/forward and the lowering/reverse
commands.
Digital inputs DI1 and DI2 with logical level “1”
A760:
Hoisting Slowdown Limit Switch
(Vertical)
The hoisting slowdown limit switch has
been actuated.
The digital input DI3 or DI7 is with logical level
“0”. The digital input for that function is defined
by the parameter P1025.
A760:
Forward Slowdown Limit Switch
(Horizontal)
The forward slowdown limit switch has
been actuated.
The digital input DI7 is with logical level “0”. The
digital input for that function is defined by the
parameter P1025.
A762:
Reverse Slowdown Limit Switch
(Horizontal)
The reverse slowdown limit switch has been
actuated.
The digital input DI7 or DI8 is with logical level
“0”. The digital input for that function is defined
by the parameter P1025.
A768:
Programming Error Release Brake
(Vertical)
It indicates to the user that the parameters
related to the brake release command, were
programmed incorrectly.
P1041 programmed with "0", and P1042 and
P1044 or P1043 and P1045 also programmed
with "0".
A770:
Detected Overweight (Vertical)
An attempt to hoist a load heavier than the
maximum operational capacity of the
application has been detected
The motor current during the hoisting stage is
greater than or equal to the value adjusted in
P1051 and P1052, and with hoisting command.
A770:
Momentary Overload (Horizontal)
An attempt a load heavier than the
maximum operational capacity of the
application has been detected
The motor current during the forward or reverse
stage is greater than or equal to the value
adjusted in P1052.
A772:
Detected Slack Cable (Vertical)
During the lowering stage, the load stayed
below the minimum operational capacity of
the crane vertical motion.
The load was not pulled down by its weight
during the lowering stage, it was pushed down
instead.
F773:
Detected Slack Cable (Vertical)
During the lowering stage, the load stayed
below the minimum operational capacity of
the crane vertical motion.
The load was not pulled down by its weight
during the lowering stage, it was pushed down
instead.
F775:
Inverter in Torque Limit
The frequency inverter reached the adjusted
torque limit because of excessive load or
demanded force.
The difference between the actual speed and the
speed reference is greater than or equal to the
hysteresis value adjusted in P1056.
F777:
Improper Operation
Several consecutive alarm messages
occurred during a certain period, disabling
the frequency inverter.
The number of consecutive alarms generated
during a certain period is greater than or equal to
the value adjusted in P1058.
F797:
Incompatible Type Control (Vertical)
It indicates to the user that the Type Control
of the drive has been wrongly programmed
The contents of the parameter P0202 that
indicates the type control of the inverter is not set
to Sensorless or Encoder.
F799:
Incompatible Software Version
It indicates that the software version of
CFW500 (P0023) in not compatible with the
version used in the development of the
Crane Vertical or Horizontal Motion
application
Software Version of CFW500 is lower than 2.02