Danfoss VLT AQUA Drive FC 202 Programming Manual page 79

Parameter Description
Digital input function Option
Pump 3 interlock [132]
Table 3.12 Functions for Digital Inputs
All stands for terminals 18, 19, 27, 29, 32, X30/2, X30/3, and
X30/4.
X30/X are the terminals on VLT
101.
Functions dedicated to only 1 digital input are stated in
the associated parameter.
All digital inputs can be programmed to these functions:
[0] No operation No reaction to signals transmitted to
terminal.
[1] Reset Resets the frequency converter after a trip/
alarm. Not all alarms can be reset.
[2] Coast inverse Leaves motor in free mode. Logic 0=coast
stop.
(Default digital input 27) Coast stop, inverted
input (NC).
[3] Coast and Reset and coast stop inverted input (NC).
reset inverse Leaves motor in free mode and resets the
frequency converter. Logic 0=coast stop and
reset.
[5] DC-brake Inverted input for DC brake (NC).
inverse Stops motor by energizing it with a DC
current for a certain time period. See
parameter 2-01 DC Brake Current to
parameter 2-03 DC Brake Cut In Speed [RPM].
The function is only active when the value
in parameter 2-02 DC Braking Time is
different from 0. Logic 0=DC brake.
This selection is not possible when
parameter 1-10 Motor Construction is set to
[1] PM, non-salient SPM.
[6] Stop inverse Stop inverted function. Generates a stop
function when the selected terminal goes
from logical level 1 to 0. The stop is
performed according to the selected ramp
time (parameter 3-42 Ramp 1 Ramp Down
Time and parameter 3-52 Ramp 2 Ramp
Down Time).
NOTICE
When the frequency converter is at
the torque limit and has received a
stop command, it may not stop by
itself. To ensure that the frequency
converter stops, configure a digital
output to [27] Torque limit & stop and
connect it to a digital input
configured as coast.
[7] External Same function as coast stop inverse, but
Interlock external interlock generates the alarm
MG20OB02
Programming Guide
Terminal
All
®
General Purpose I/O MCB
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message external fault when the terminal
programmed for coast inverse is logic 0. The
alarm message is also active via digital
outputs and relay outputs, if programmed
for external interlock. The alarm can be reset
using a digital input or the [Reset] key if the
cause for the external interlock has been
removed. A delay can be programmed in
parameter 22-00 External Interlock Delay. After
applying a signal to the input, the reaction
is delayed with the time set in
parameter 22-00 External Interlock Delay.
[8] Start Select start value for a start/stop command.
1=start, 0=stop.
(Default digital input 18).
[9] Latched start The motor starts if a pulse is applied for
minimum 2 ms. The motor stops when stop
inverse is activated.
[10] Reversing Changes direction of motor shaft rotation.
Select logic 1 to reverse. The reversing signal
only changes the direction of rotation. It
does not activate the start function. Select
both directions in parameter 4-10 Motor
Speed Direction.
(Default digital input 19).
[11] Start Used for start/stop and for reversing on the
reversing same wire. Signals on start are not allowed
at the same time.
[14] Jog Used for activating jog speed. See
parameter 3-11 Jog Speed [Hz].
(Default digital input 29).
[15] Preset Used for shifting between external reference
reference on and preset reference. It is assumed that [1]
External/preset has been selected in
parameter 3-04 Reference Function. Logic 0 =
external reference active; logic 1 = 1 of the
8 preset references is active.
[16] Preset ref bit Enables a selection of 1 of the 8 preset
0 references according to Table 3.13.
[17] Preset ref bit Enables a selection of 1 of the 8 preset
1 references according to Table 3.13.
[18] Preset ref bit Enables a selection of 1 of the 8 preset
2 references according to Table 3.13.
Preset ref. bit
Preset reference 0
Preset reference 1
Preset reference 2
Preset reference 3
Preset reference 4
Preset reference 5
Preset reference 6
Preset reference 7
Table 3.13 Preset Reference Bit
3
2 1 0
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
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