Warning And Alarm Types - Danfoss VLT AutomationDrive FC 301 Instruction Manual

Maintenance, Diagnostics an...
PowerUnit Off
Protection md
QStop
7 7
Ramping
Ref. high
Ref. low
Run on ref.
Run request
Running
Sleep Mode
Speed high
Speed low
Standby
40
Instruction Manual
(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 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.
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.
The motor is accelerating/decelerating using
the active Ramp-up/Down. The reference, a
limit value, or a standstill is not yet reached.
The sum of all active references is above the
reference limit set in 4-55 Warning Reference
High.
The sum of all active references is below the
reference limit set in 4-54 Warning Reference
Low.
The adjustable frequency drive is running in
the reference range. The feedback value
matches the setpoint value.
A start command was given but the motor
remains stopped until a run permissive signal
is received via digital input.
The motor is driven by the adjustable
frequency drive.
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.
Danfoss A/S © Rev. 09/2014 All rights reserved.
Start delay 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 fwd/rev 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 direction
depending on which corresponding terminal
is activated.
Stop The adjustable frequency drive has received a
stop command from the LCP, digital input or
serial communication.
Trip 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.
Trip lock 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.
Table 7.3 Operation Status
NOTICE!
In auto/remote mode, the adjustable frequency drive
requires external commands to execute functions.

7.3 Warning and Alarm Types

Warnings
A warning is issued when an alarm condition is impending
or when an abnormal operating condition is present and
may result in the adjustable frequency drive issuing an
alarm. A warning clears by itself when the abnormal
condition ceases.
Alarms
Trip
An alarm is issued when the adjustable frequency drive is
tripped, meaning that the adjustable frequency drive
suspends operation to prevent adjustable frequency drive
or system damage. The motor coasts to a stop. The
adjustable frequency drive logic continues to operate and
monitor the adjustable frequency drive status. After the
fault condition is remedied, the adjustable frequency drive
can be reset. It is then ready to start operation again.
MG33AP22