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 has been given, but the
motor is stopped until a run permissive signal is
received via digital input.
Running The motor is driven by the adjustable frequency
drive.
Sleep Mode The energy-saving function is enabled. This
means that at present the motor has stopped
but it will restart 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 adjustable frequency
drive will start 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
will start 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
will start in forward or reverse 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 7.4 Operation Status
NOTICE!
In auto/remote mode, the adjustable frequency drive
requires external commands to execute functions.
7.2 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 is
removed.
Alarms
Trip
An alarm is issued when the adjustable frequency drive is
tripped, which means that the adjustable frequency drive
suspends operation to prevent adjustable frequency drive or
system damage. The motor will coast to a stop. The
adjustable frequency drive logic will continue to operate and
monitor the adjustable frequency drive status. After the fault
condition is remedied, the adjustable frequency drive can be
reset. It will then be ready to start operation again.
Resetting the adjustable frequency drive after trip/trip lock
A trip can be reset in any of four 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
adjustable frequency drive continues to monitor the
adjustable frequency drive status. Remove input power to
the adjustable frequency drive, correct the cause of the fault,
and reset the adjustable frequency drive.
Diagnostics and Troubleshoo...
VLT
®
HVAC Drive Instruction Manual
MG11AJ22 - Rev. 2013-09-13 41
7 7
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