Danfoss VLT FC 102 User Manual page 35

Maintenance, Diagnostics, a...
Motor check In parameter 1-80 Function at Stop, [2] Motor
Check was selected. A stop command is active.
To ensure that a motor is connected to the
drive system, a permanent test current is
applied to the motor.
OVC control Overvoltage control was activated in
parameter 2-17 Over-voltage Control, [2]
Enabled. The connected motor is supplying
the drive system with generative energy. The
overvoltage control adjusts the V/Hz ratio to
run the motor in controlled mode and to
prevent the drive system from tripping.
PowerUnit Off (Only for drive systems with a 24 V external
supply installed.) Mains supply to the drive
system is removed, but the control card is
supplied by the external 24 V power source.
This status indication can also be caused if the
drive module's power card is not connected to
the drive system's MDCIC card.
Protection md Protection mode is active. The unit has
detected a critical status (an overcurrent or
overvoltage).
•
To avoid tripping, switching frequency is
reduced to 1500 kHz if
Parameter 14-55 Output Filter is set to [2]
Sine-Wave Filter Fixed. Otherwise, the
switching frequency is reduced to 1000 Hz.
•
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.
•
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 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 drive system is running in the reference
range. The feedback value matches the
setpoint value.
Run request A start command has been given, but the
motor is stopped until a run permissive signal
is received via digital input.
Running The drive system is driving the motor.
MG37L202
User Guide
Sleep Mode
Speed high
Speed low
Standby
Start delay
Start fwd/rev
Stop
Trip
Trip lock
Table 6.3 Operation Status
NOTICE
In auto/remote mode, the drive system requires external
commands to execute functions.
Danfoss A/S © 08/2017 All rights reserved.
The energy saving function is enabled. This
function being enabled means that now the
motor has stopped, but that it restarts
automatically when required.
Motor speed is above the value set in
parameter 4-53 Warning Speed High.
Motor speed is below the value set in
parameter 4-52 Warning Speed Low.
In auto-on mode, the drive system starts the
motor with a start signal from a digital input
or serial communication.
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 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 depending
on which corresponding terminal is activated.
The drive system has received a stop
command from 1 of the following:
•
LCP.
•
Digital input.
•
Serial communication.
An alarm occurred and the motor is stopped.
Once the cause of the alarm is cleared, the
drive system is reset manually by 1 of the
following:
•
Pressing [Reset].
•
Remotely by control terminals.
•
Via serial communication.
Pressing [Reset] or remotely by control
terminals or via serial communication.
An alarm occurred and the motor is stopped.
Once the cause of the alarm is cleared, power
must be cycled to the drive system. The drive
system is then reset manually by 1 of the
following:
•
Pressing [Reset].
•
Remotely by control terminals.
•
Via serial communication.
6 6
33