Danfoss VLT FC 103 Programming Manual page 61

Parameter Description
Fire mode
Day/ Night Control
Run Permissive
Hand start
Auto start
3 3
DigiPot Increase
DigiPot Decrease
DigiPot Clear
Reset Counter A
Reset Counter B
Sleep Mode
Reset Maintenance Word
Lead Compressor Start
Lead Compressor Alternation
Compressor 1 Interlock
Compressor 2 Interlock
Compressor 3 Interlock
Comp. 1 Inv. Interlock
Comp. 2 Inv. Interlock
Comp. 3 Inv. Interlock
Table 3.9
All = Terminals 18, 19, 27, 29, 32, X30/2, X30/3, X30/4. X30/
are the terminals on MCB 101.
Functions dedicated to only one digital input are stated in
the associated parameter.
All digital inputs can be programmed to these functions:
[0] No operation
[1] Reset
[2] Coast inverse
[3] Coast and
reset inverse
[5] DC-brake
inverse
[6] Stop inverse
60
®
VLT Refrigeration Drive Programming Guide
No reaction to signals transmitted to
terminal.
Resets frequency converter after a TRIP/
ALARM. Not all alarms can be reset.
Leaves motor in free mode. Logic '0' ⇒
coasting stop.
(Default Digital input 27): Coasting stop,
inverted input (NC).
Reset and coasting stop Inverted input (NC).
Leaves motor in free mode and resets the
frequency converter. Logic '0' ⇒ coasting
stop and reset.
Inverted input for DC braking (NC).
Stops motor by energizing it with a DC
current for a certain time period. See
2-01 DC Brake Current to 2-03 DC Brake Cut
In Speed [RPM]. The function is only active
when the value in 2-02 DC Braking Time is
different from 0. Logic '0' ⇒ DC braking.
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 (3-42 Ramp 1 Ramp Down Time,
3-52 Ramp 2 Ramp Down Time, 3-62 Ramp 3
MG16H102 - VLT
[37]
[39]
[52]
[53]
[54]
[55] All
[56] All
[57] All
[62] All
[65] All
[66]
[78]
[120]
[121]
[130]
[131]
[132]
[139]
[140]
[141]
[7] External
Interlock
[8] Start
[9] Latched start
®
is a registered Danfoss trademark
Ramp down Time, 3-72 Ramp 4 Ramp Down
Time).
NOTE
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 this
digital output to a digital input that is
configured as coast.
Same function as Coasting stop, inverse, but
External Interlock generates the alarm
message 'external fault' on the display
when the terminal which is programmed for
Coast Inverse is logic '0'. The alarm message
will also be 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
22-00 External Interlock Delay. After applying
a signal to the input, the reaction described
above will be delayed with the time set in
22-00 External Interlock Delay.
Select start for a start/stop command. Logic
'1' = start, logic '0' = stop.
(Default Digital input 18)
Motor starts, if a pulse is applied for min. 2
ms. Motor stops when Stop inverse is
activated