Danfoss 102 Operating Instructions Manual page 56

Status Messages
Ctrl. Ramp-down Control Ramp-down was selected in
Current High
Current Low
DC Hold
DC Stop
7 7
Feedback high
Feedback low
Freeze output
Freeze output
request
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52
VLT
Operation Status
14-10 Mains Failure.
•
The mains voltage is below the value set
in 14-11 Mains Voltage at Mains Fault at
mains fault
•
The frequency converter ramps down the
motor using a controlled ramp down
The frequency converter output current is
above the limit set in 4-51 Warning Current
High.
The frequency converter output current is
below the limit set in 4-52 Warning Speed Low
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.
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.
The sum of all active feedback is above the
feedback limit set in 4-57 Warning Feedback
High.
The sum of all active feedback is below the
feedback limit set in 4-56 Warning Feedback
Low.
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
Speed Down.
•
Hold ramp is activated via serial communi-
cation.
A freeze output command has been given,
but until a run permissive signal is received,
the motor remains stopped.
MG11AI02 - VLT
®
HVAC Drive Operating Instructions
Freeze ref.
Jog request
Jogging
Motor check
OVC control
PowerUnit Off
Protection md
®
is a registered Danfoss trademark
Operation Status
Freeze Reference was chosen 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 functions Speed Up and
Speed Down.
A jog command has been given, but until a
run permissive signal is received via a digital
input, the motor is stopped
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.
In 1-80 Function at Stop, Motor Check was
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.
Overvoltage control was activated in 2-17 Over-
voltage Control. The connected motor is
supplying 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.
(For frequency converters with an external 24
V power supply installed only.) Mains supply
to the frequency converter is removed, but
the control card is supplied by the external 24
V.
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