Description of choice:
No operation is selected if the adjustable frequency
drive is not to react to signals transmitted to the termi-
nal.
Reset resets the adjustable frequency drive after an
alarm; however, a few alarms cannot be reset (trip
locked) without first disconnecting the line supply and
reconnecting it. See table under List of warnings and
alarms. Reset is activated on the leading edge of the
signal.
Coasting stop inverse is used for making the adjustable
frequency drive "let go" of the motor immediately (out-
put transistors are "turned off"), which means that the
motor runs freely to a stop. Logic '0' leads to coasting
to stop.
Reset and coasting inverse are used to activate motor
coast simultaneously with reset. Logical '0' means mo-
tor coast stop and reset. Reset is activated on the
falling edge.
Quick stop inverse is used for activating the quick stop
ramp-down set in parameter 212 Quick stop ramp-
down time. Logic '0' leads to quick stop.
DC braking inverse is used for stopping the motor by
energizing it with a DC voltage for a given time; see
parameters 126, 127 and 132 DC brake. Please note
that this function is only active if the value in parameter
126 DC braking time and 132 DC brake voltage is dif-
ferent from 0. Logic '0' leads to DC braking.
Stop inverse, a logic '0' means that the motor speed is
ramped down to stop via the selected ramp.
None of the stop commands mentioned
above are to be used as repair switches.
Note that the adjustable frequency drive
has more voltage inputs than L1, L2 and
L3 when the DC bus terminals are used.
Make sure that all voltage inputs are dis-
connected and that the prescribed time (4
minutes.) has passed before repair work
is commenced.
Start is selected if a start/stop command is required.
Logic '1' = start, logic '0' = stop.
Latched start - if a pulse is applied for at least 14 ms,
the adjustable frequency drive will start the motor, pro-
vided no stop command has been given. The motor
can be stopped by briefly activating Stop inverse.
Reversing is used for changing the direction of rotation
of the motor shaft. Logic '0' will not lead to reversing.
Logic '1' will lead to reversing. The reverse signal only
changes the direction of rotation, it does not activate
the start. Is not active at Process regulation, closed-
loop. See also parameter 200 Output frequency range/
direction.
Reversing and start is used for start/stop and for re-
versing with the same signal. No active start command
is allowed at the same time. Acts as latch start revers-
ing, provided latch start has been chosen for terminal
18. Is not active for Process regulation, closed-loop.
See also parameter 200 Output frequency range/di-
rection.
Start clockwise is used if you want the motor shaft only
to be able to rotate clockwise when started. Should not
be used for Process regulation, closed-loop.
Start counter-clockwise is used if you want the motor
shaft only to be able to rotate counter-clockwise when
started. Should not be used for Process regulation,
closed-loop. See also parameter 200 Output frequency
range/direction.
Jog is used to override the output frequency to the jog
frequency set in parameter 213 Jog frequency. Jog is
active regardless of whether a start command has
been given, yet not when Coast stop, Quick stop or DC
braking are active.
Freeze reference freezes the present reference. The
reference can now only be changed via Speed up and
Slow. If freeze reference is active, it will be saved after
a stop command and in the event of line failure.
Freeze output freezes the present output frequency (in
Hz). The output frequency can now only be changed
via Speed up and Slow.
VLT
®
2800 Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
60 MG.27.A2.22 - VLT
®
is a registered Danfoss trademark
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