Braking max.
The brake chopper is in operation. The power
limit for the brake resistor defined in
parameter 2-12 Brake Power Limit (kW)
has
been reached.
Coast
•
Coast inverse
was selected as a function for
a digital input (parameter group
5-1*
Digital Inputs
). The corresponding terminal
is not connected.
•
Coast activated by serial communication.
Ctrl. ramp-down
[1] Control Ramp-down
was selected in
parameter 14-10 Mains Failure
.
•
The mains voltage is below the value set
in
parameter 14-11 Mains Voltage at Mains
Fault
at mains fault
•
The frequency converter ramps down the
motor using a controlled ramp down.
Current High
The frequency converter output current is
above the limit set in
parameter 4-51 Warning
Current High
.
Current Low
The frequency converter output current is
below the limit set in
parameter 4-52 Warning
Speed Low
.
DC Hold
[1] DC hold
is selected in
parameter 1-80 Function at Stop
and a stop
command is active. The motor is held by a DC
current set in
parameter 2-00 DC Hold/Preheat
Current
.
DC Stop
The motor is held with a DC current
(
parameter 2-01 DC Brake Current
) for a
specified time (
parameter 2-02 DC Braking
Time
).
•
The DC brake cut in speed is reached in
parameter 2-03 DC Brake Cut In Speed [RPM]
and a stop command is active.
•
[5] 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
parameter 4-57 Warning
Feedback High
.
Feedback low
The sum of all active feedbacks is below the
feedback limit set in
parameter 4-56 Warning
Feedback Low
.
Freeze output
The remote reference is active, which holds
the present speed.
•
[20] Freeze output
is 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 options
[21] Speed up
and
[22]
Speed down
.
•
Hold ramp is activated via serial communi-
cation.
Freeze output
request
A freeze output command was given, but the
motor remains stopped until a run permissive
signal is received.
Freeze ref.
[19] Freeze reference
is selected as a function
for a digital input (parameter group
5-1*
Digital Inputs
). The corresponding terminal is
active. The frequency converter saves the
actual reference. Changing the reference is
now only possible via terminal options
[21]
Speed up
and
[22] Speed down
.
Jog request
A jog command was given, but the motor
remains stopped until a run permissive signal
is received via a digital input.
Jogging
The motor is running as programmed in
parameter 3-19 Jog Speed [RPM]
.
•
[14] Jog
was selected as a 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 is selected as a reaction
for a monitoring function (for example, for
the no signal function). The monitoring
function is active.
Motor check
In
parameter 1-80 Function at Stop
,
[2] Motor
Check
is selected. A stop command is active.
To ensure that a motor is connected to the
frequency converter, a permanent test current
is applied to the motor.
OVC control
Overvoltage control is activated via
parameter 2-17 Over-voltage Control
,
[2]
Enabled
. The connected motor supplies the
frequency converter with generative energy.
The overvoltage control adjusts the V/Hz ratio
to run the motor in controlled mode and to
prevent the frequency converter from tripping.
PowerUnit Off
(Only frequency converters with a 24 V
external supply installed).
Mains supply to the frequency converter was
removed, and the control card is supplied by
the external 24 V.
Maintenance, Diagnostics, a...
VLT
®
AutomationDrive FC 301/302
38
Danfoss A/S © 07/2015 All rights reserved.
MG33AQ02
7
7
Содержание VLT AutomationDrive FC 301
Страница 2: ......