Function:
In parameters 300-307 Digital inputs it is possible to
choose between the different possible functions rela-
ted to the digital inputs (terminals 16-33). The func-
tional options are given in the table on the previous
page.
Description of choice:
No function is selected if the frequency converter is
not to react to signals transmitted to the terminal.
Reset the frequency converter after an alarm; how-
ever, trip locked alarms cannot be reset by cycling
mains power supply. See table in List of warnings and
alarms . Reset will occur on the rising edge of the sig-
nal.
Coasting stop , inverse is used to force the frequency
converter to "release" the motor immediately (the out-
put transistors are "turned off") to make it coast freely
to stop. Logic ‘0’ implements coasting to stop.
Reset and coasting stop, inverse is used for acti-
vating coasting stop at the same time as reset. Logic
‘0’ implements coasting stop and reset. Reset will be
activate on the falling edge of the signal.
DC braking, inverse is used for stopping the motor
by energizing it with a DC voltage for a given time, see
parameters 114-116 DC brake.
Please note that this function is only active if the value
of parameters 114 DC brake current and 115 DC brak-
ing time is different from 0. Logic ‘0’ implements DC
braking. See DC braking.
Safety interlock has the same function as Coasting
stop, inverse, but Safety interlock generates the alarm
message ’external fault’ on the display when terminal
27 is logic ‘0’. The alarm message will also be active
via digital outputs 42/45 and relay outputs 1/2, if pro-
grammed for Safety interlock. The alarm can be reset
using a digital input or the [OFF/STOP] key.
Start is selected if a start/stop command is required.
Logic ‘1’ = start, logic ‘0’ = stop.
NB!
Please note, that if the frequency convert-
er is in current limit the stop function will
not be active.
Reversing is used for changing the direction of rota-
tion of the motor shaft. Logic ‘0’ will not implement
reversing. Logic ‘1’ will implement reversing. The re-
versing signal only changes the direction of rotation; it
does not activate the start function. Is not active to-
gether with Closed loop.
Reversing and start is used for start/stop and re-
versing using the same signal. A start signal via ter-
minal 18 at the same time is not allowed. Is not active
together with Closed loop.
Freeze reference freezes the present reference. The
frozen reference can now only be changed by means
of Speed up or Speed down. The frozen reference is
saved after a stop command and in case of mains fail-
ure.
Freeze output freezes the present output frequency
(in Hz). The frozen output frequency can now only be
changed by means of Speed up or Speed down .
NB!
If Freeze output is active, the frequency
converter cannot be stopped via terminal
18. The frequency converter can only be
stopped when terminal 27 or terminal 19
has been programmed for DC braking, in-
verse.
Selection of Setup, lsb and Selection of Setup,
msb enables a choice of one of the four Setups. How-
ever, this presupposes that parameter 002 Active Set-
up has been set at Multi Setup [5].
Setup, msb Setup, lsb
Setup 1 0 0
Setup 2 0 1
Setup 3 1 0
Setup 4 1 1
Preset reference, on is used for switching between
remote reference and preset reference. This assumes
that Remote/preset [2] has been selected in parame-
ter 210 Reference type. Logic ‘0’ = remote references
active; logic ‘1’ = one of the four preset references is
active in accordance with the table below.
Preset reference, lsb and Preset reference,msb
enables a choice of one of the four preset references,
in accordance with the table below.
Preset ref. msb Preset ref. lsb
Preset ref. 1 0 0
Preset ref. 2 0 1
Preset ref. 3 1 0
Preset ref. 4 1 1
Speed up and speed down are selected if digital
control of the up/down speed is desired. This function
is only active if Freeze reference or Freeze output has
been selected.
As long as there is a logic ‘1’ on the terminal selected
for Speed up, the reference or the output frequency will
increase by the Ramp-up time set in parameter 206.
VLT
®
6000 HVAC Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.61.B5.02 - VLT
®
is a registered Danfoss trademark 125
Programming
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