VLT
®
5000 Series
300
300 Terminal 16, input
(DIGITAL INPUT 16)
Function:
In this and the following parameters it is possible to
choose between the different possible functions re-
lated to the inputs on terminals 16-33.
The function options are shown in the table on page
111. The maximum frequency for terminal 16, 17, 18
and 19 is 5 kHz. The maximum frequency for termi-
nals 29, 32 and 33 is 65 kHz.
Description of choice:
No function is selected if the VLT frequency con-
verter is not to react to signals transmitted to the
terminal.
Reset zeroes the VLT frequency converter after an
alarm; however, not all alarms can be reset.
Coasting stop inverse is used for making the VLT
frequency converter let go of the motor to make it
coast freely to stop. Logic ’0’ leads to coasting stop
and reset.
Reset and coasting stop inverse , is used for acti-
vating coasting stop at the same time as reset.
Logic ‘0’ leads to coasting stop and reset
Quick-stop inverse is used for stopping the motor
in accordance with the quick-stop ramp (set in pa-
rameter 212). Logic ’0’ leads to a quick-stop.
DC braking inverse is used for stopping the motor
by energizing it with a DC voltage for a given time,
see parameters 125-127.
Please note that this function is only active if the
value of parameters 126-127 is different from 0.
Logic ’0’ leads to DC braking.
Stop inverse is activated by interrupting the voltage
to the terminal. This means that if the terminal has
no voltage, the motor cannot run. The stop will be
effected in accordance with the selected ramp (pa-
rameters 207/208/209/210).
None of the above-mentioned stop com-
mands (start-disable) are to be used as
disconnection switch in connection with
repairs. Cut mains instead.
NB!:
It must be noted that when the VLT frequency
converter is at the torque limit and has re-
ceived a stop command, it will only stop if terminal
42, 45, 01 or 04 has been connected to terminal 27.
The data choice on terminal 42, 45, 01 or 04 must
be Torque limit and stop [27].
Start , is selected if a start/stop (operating com-
mand, group 2) command is desired. Logic ’1’ =
start, logic ’0’ = stop.
002
Latched start - if a pulse is applied for min. 3 ms,
the motor will start, provided no stop command (op-
erating command, group 2). The motor stops if Stop
inverse is activated briefly.
Reversing is used for changing the direction of rota-
tion of the motor shaft. Logic "0" will not lead to
reversing. Logic "1" will lead to reversing. The re-
versing signal only changes the direction of rotation;
it does not activate the start function.
Reversing requires that Both directions has been se-
lected in parameter 200.
Is not active if Process control, closed loop or
Torque control, speed feedback has been selected.
Start reversing , is used for start/stop (operating
command, group 2) and for reversing with the same
signal. No signal is allowed on terminal 18 at the
same time. Acts as latch start reversing, provided
latch start has been chosen for terminal 18.
Is not active if Process control, closed loop has been
selected.
Start clockwise only , on is used if the motor shaft
is only to be able to rotate clockwise when starting.
Should not be used with Process control, closed
loop.
Start anti-clockwise only , is used if the motor
shaft is to rotate anti-clockwise when started.
Should not be used with Process control, closed
loop .
Jog is used for overriding the output frequency to
the jog frequency set in parameter 213. The ramp
time can be set in parameter 211. Jog is not active if
a stop command has been given (start-disable). Jog
overrides stop (operating command, group 2).
Preset reference, on is used for shifting between
external reference and preset reference. It is as-
sumed that External/preset [2] has been selected in
✭
= factory setting. () = display text [] = value for use in communication via serial communication port
MG.51.A1.02 - VLT is a registered Danfoss trade mark
129
Programming
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