Protection md
Protection mode is active. The unit 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
parameter 14-26 Trip Delay at Inverter Fault
.
QStop
The motor is decelerating using
parameter 3-81 Quick Stop Ramp Time
.
•
[4] Quick stop inverse
is selected as a
function for a digital input (parameter
group
5-1* Digital Inputs
). The
corresponding terminal is not active.
•
The quick stop function is 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
parameter 4-55 Warning
Reference High
.
Ref. low
The sum of all active references is below the
reference limit set in
parameter 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 frequency converter drives the motor.
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
parameter 4-53 Warning Speed High
.
Speed low
Motor speed is below the value set in
parameter 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
parameter 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
[12] Enable start forward
and
[13] Enable start
reverse
are selected as options for 2 different
digital inputs (parameter group
5-1* Digital
Inputs
). The motor starts in forward or reverse
direction depending on which terminal is
activated.
Stop
The frequency converter 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
frequency converter 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.
When the cause of the alarm is cleared, cycle
power to the frequency converter. The
frequency converter 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 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:
•
Press [Reset] on the LCP.
•
Digital reset input command.
•
Serial communication reset input command.
•
Auto reset.
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.
Maintenance, Diagnostics, a...
Operating Instructions
MG33AQ02
Danfoss A/S © 07/2015 All rights reserved.
39
7
7
Summary of Contents for VLT AutomationDrive FC 301
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