Warning And Alarm Types - Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Maintenance, Diagnostics an...
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 frequency converter 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 frequency
converter.
Sleep Mode The energy-saving function is enabled. The
motor has stopped, but restarts automatically
when required.
Speed high Motor speed is above the value set in
4-53 Warning Speed High.
Speed low Motor speed is below the value set in
4-52 Warning Speed Low.
Standby In Auto On mode, the frequency converter
starts the motor with a start signal from a
digital input or serial communication.
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 2 different digital inputs
(parameter group 5-1* Digital Inputs). The
motor starts in forward or reverse direction
depending on which corresponding terminal
is activated.
MG33AP02
Operating Instructions
Stop
Trip
Trip lock
Table 7.3 Operation Status
NOTICE
In auto/remote mode, the frequency converter 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 frequency converter issuing an alarm. A
warning clears by itself when the abnormal condition
ceases.
Alarms
Trip
An alarm is issued when the frequency converter is
tripped, meaning that the frequency converter suspends
operation to prevent frequency converter or system
damage. The motor coasts to a stop. The frequency
converter logic continues to operate and monitor the
frequency converter status. After the fault condition is
remedied, the frequency converter can be reset. It is then
ready to start operation again.
Resetting the frequency converter after trip/trip lock
A trip can be reset in any of 4 ways:
•
•
•
•
Trip lock
Input power is cycled. The motor coasts to a stop. The
frequency converter continues to monitor the frequency
converter status. Remove input power to the frequency
converter, correct the cause of the fault, and reset the
frequency converter.
Danfoss A/S © Rev. 07/2014 All rights reserved.
The frequency converter 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
frequency converter 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 frequency converter.
The frequency converter can then be reset
manually by pressing [Reset], or remotely by
control terminals or serial communication.
Press [Reset] on the LCP.
Digital reset input command.
Serial communication reset input command.
Auto reset.
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