Operation Status
Ctrl. Ramp-down Control Ramp-down was selected in
14-10 Mains Failure.
•
The AC line voltage is below the value set
in 14-11 Mains Voltage at Mains Fault at
line power fault.
•
The adjustable frequency drive ramps
down the motor using a controlled ramp-
down.
Current High The adjustable frequency drive output current
is above the limit set in 4-51 Warning Current
High.
Current Low The adjustable frequency drive output current
is below the limit set in 4-52 Warning Speed
Low
DC Hold
DC hold is selected in 1-80 Function at Stop
and a stop command is active. The motor is
held by a DC current set in 2-00 DC Hold/
Preheat Current.
DC Stop
The motor is held with a DC current (2-01 DC
Brake Current) for a specified time (2-02 DC
Braking Time).
•
DC Brake is activated in 2-03 DC Brake Cut-
in Speed [RPM] and a Stop command is
active.
•
DC Brake (inverse) is selected as a function
for a digital input (parameter group 5-1*
Digital Inputs). The corresponding terminal
is not active.
•
The DC Brake is activated via serial
communication.
Feedback high The sum of all active feedback is above the
feedback limit set in 4-57 Warning Feedback
High.
Feedback low The sum of all active feedback is below the
feedback limit set in 4-56 Warning Feedback
Low.
Freeze output The remote reference is active, which holds
the present speed.
•
Freeze output was selected as a function
for a digital input (parameter group 5-1*
Digital Inputs). The corresponding terminal
is active. Speed control is only possible via
the terminal functions Speed Up and Slow.
•
Hold ramp is activated via serial communi-
cation.
Freeze output
request
A freeze output command has been given,
but until a run permissive signal is received,
the motor remains stopped.
Operation Status
Freeze ref.
Freeze Reference was chosen as a function for
a digital input (parameter group 5-1* Digital
Inputs). The corresponding terminal is active.
The adjustable frequency drive saves the
actual reference. Changing the reference is
now only possible via terminal functions
Speed Up and Slow.
Jog request A jog command has been given, but until a
run permissive signal is received via a digital
input, the motor is stopped
Jogging The motor is running as programmed in
3-19 Jog Speed [RPM].
•
Jog was selected as function for a digital
input (parameter group 5-1* Digital Inputs).
The corresponding terminal (for example,
Terminal 29) is active.
•
The Jog function is activated via the serial
communication.
•
The Jog function was selected as a
reaction for a monitoring function (for
example, No signal). The monitoring
function is active.
Motor check
In 1-80 Function at Stop, Motor Check was
selected. A stop command is active. To ensure
that a motor is connected to the adjustable
frequency drive, a permanent test current is
applied to the motor.
Over Voltage
Control (OVC)
Overvoltage control was activated in 2-17 Over-
voltage Control. The connected motor is
supplying the adjustable frequency drive with
generative energy. Overvoltage control adjusts
the V/Hz ratio to run the motor in controlled
mode and to prevent the adjustable
frequency drive from tripping.
PowerUnit Off (For adjustable frequency drives with an
external 24 V power supply installed only.)
Line power supply to the adjustable frequency
drive is removed, but the control card is
supplied by the external 24 V.
Protection md Protection mode is active. The unit has
detected a critical status (an overcurrent or
overvoltage).
•
To avoid tripping, switching frequency is
reduced to 4 kHz.
•
If possible, Protection mode ends after
approximately 10 s
•
Protection mode can be restricted in
14-26 Trip Delay at Inverter Fault
Status Messages
VLT
®
AQUA Drive
Instruction Manual
7-2 MG20M922 - VLT
®
is a registered Danfoss trademark
77
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