Danfoss VLT AQUA Drive FC 202 Instruction Manual page 41

Maintenance, Diagnostics an...
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 Overvoltage control was activated in 2-17 Over-
Control (OVC) voltage Control, [2] Enabled. The connected
motor is supplying the adjustable frequency
drive with generative energy. The 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 (Only adjustable frequency drives with an
external 24 V power supply installed).
Line power supply to the adjustable frequency
drive was removed, and the control card is
supplied by the external 24 V.
Protection md Protection mode is active. The unit has
detected a critical status (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.
QStop The motor is decelerating using 3-81 Quick
Stop Ramp Time.
•
Quick stop inverse was selected as a
function for a digital input (parameter
group 5-1* Digital Inputs). The
corresponding terminal is not active.
•
The quick stop function was activated via
serial communication.
Ramping The motor is accelerating/decelerating using
the active Ramp-Up/Down. The reference, a
limit value, or a standstill is not yet reached.
Ref. high The sum of all active references is above the
reference limit set in 4-55 Warning Reference
High.
Ref. low The sum of all active references is below the
reference limit set in 4-54 Warning Reference
Low.
Run on ref. The adjustable frequency drive is running in
the reference range. The feedback value
matches the setpoint value.
Run request A start command was given, but the motor
remains stopped until a run permissive signal
is received via digital input.
Running The motor is driven by the adjustable
frequency drive.
MG20MA22
Instruction Manual
Sleep Mode
Speed high
Speed low
Standby
Start delay
Start fwd/rev
Stop
Trip
Trip lock
Table 7.3 Operation Status
NOTICE!
In auto/remote mode, the adjustable frequency drive
requires external commands to execute functions.
Danfoss A/S © 10/2014 All rights reserved.
The energy-saving function is enabled. The
motor has stopped but restarts automatically
when required.
Motor speed is above the value set in
4-53 Warning Speed High.
Motor speed is below the value set in
4-52 Warning Speed Low.
In Auto On mode, the adjustable frequency
drive starts the motor with a start signal from
a digital input or serial communication.
In 1-71 Start Delay, a delay starting time was
set. A start command is activated and the
motor starts after the start delay time expires.
Start forward and start reverse were selected
as functions for two different digital inputs
(parameter group 5-1* Digital Inputs). The
motor starts in forward or reverse depending
on which corresponding terminal is activated.
The adjustable frequency drive has received a
stop command from the LCP, digital input, or
serial communication.
An alarm occurred and the motor is stopped.
Once the cause of the alarm is cleared, the
adjustable frequency drive can be reset
manually by pressing [Reset] or remotely by
control terminals or serial communication.
An alarm occurred and the motor is stopped.
Once the cause of the alarm is cleared, power
must be cycled to the adjustable frequency
drive. The adjustable frequency drive can then
be reset manually by pressing [Reset] or
remotely by control terminals or serial
communication.
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