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 feedbacks is above the
feedback limit set in
4-57 Warning Feedback
High
.
Feedback low
The sum of all active feedbacks 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 the motor will remain stopped until a run
permissive signal is received.
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 the
motor will be stopped until a run permissive
signal is received via a digital input.
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 (e.g., 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 (e.g., 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.
OVC control
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
Ramping
The motor is accelerating/decelerating using
the active ramp-up/down. The reference, a
limit value or a standstill is not yet reached.
Status Messages
VLT
®
Refrigeration Drive Instruction Manual
7-2
MG16J122 - VLT
®
is a registered Danfoss trademark
7
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