Danfoss FC 300 Programming Manual page 69

Parameter Descriptions
[8] Start (Default Digital input 18): Select start for a start/
stop command. Logic '1' = start, logic '0' = stop.
[9] Latched The motor starts, if a pulse is applied for min. 2
start ms. The motor stops when Stop inverse is
activated.
[10] Reversing (Default Digital input 19). Change the 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
par. 4-10 Motor Speed Direction. The function is
not active in process closed loop.
[11] Start revers- Used for start/stop and for reversing on the
ing same wire. Signals on start are not allowed at
the same time.
[12] Enable start Disengages the counterclockwise movement
forward and allows for the clockwise direction.
[13] Enable start Disengages the clockwise movement and
reverse allows for the counterclockwise direction.
[14] Jog (Default Digital input 29): Use to activate jog
speed. See par. 3-11 Jog Speed [Hz].
[15] Preset Shifts between external reference and preset
reference reference. It is assumed that External/preset [1]
on has been selected in par. 3-04 Reference
Function. Logic '0' = external reference active;
logic '1' = one of the eight preset references is
active.
[16] Preset ref Preset ref. bit 0,1, and 2 enables a choice
bit 0 between one of the eight preset references
according to the table below.
[17] Preset ref Same as Preset ref bit 0 [16].
bit 1
[18] Preset ref Same as Preset ref bit 0 [16].
bit 2
Preset ref. bit
Preset ref. 0
Preset ref. 1
Preset ref. 2
Preset ref. 3
Preset ref. 4
Preset ref. 5
Preset ref. 6
Preset ref. 7
[19] Freeze Freezes the actual reference, which is now the point
ref of enable/condition for Speed up and Speed down
to be used. If Speed up/down is used, the speed
change always follows ramp 2 (par. 3-51 Ramp 2
Ramp up Time and par. 3-52 Ramp 2 Ramp down
Time) in the range 0 - par. 3-03 Maximum Reference.
[20] Freeze Freezes the actual motor frequency (Hz), which is
output now the point of enable/condition for Speed up and
Speed down to be used. If Speed up/down is used,
the speed change always follows ramp 2
(par. 3-51 Ramp 2 Ramp up Time and par. 3-52 Ramp
FC 300 Programming Guide
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
®
MG.33.M9.02 - VLT is a registered Danfoss trademark
2 Ramp down Time) in the range 0 - par. 1-23 Motor
Frequency.
NOTE
When Freeze output is active, the frequen-
cy converter cannot be stopped via a low
'start [8]' signal. Stop the frequency
converter via a terminal programmed for
Coasting inverse [2] or Coast and reset,
inverse.
[21] Speed Select Speed up and Speed down if digital control of
up the up/down speed is desired (motor potentiome-
ter). Activate this function by selecting either Freeze
reference or Freeze output. When Speed up/ down is
activated for less than 400 msec. the resulting
reference will be increased/ decreased by 0.1 %. If
Speed up/ down is activated for more than 400
msec. the resulting reference will follow the setting
in ramping up/ down parameter 3-x1/ 3-x2.
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
[22] Speed Same as Speed up [21].
down
[23] Set-up Select Set-up select bit 0 or Select Set-up select
select bit 0 bit 1 to select one of the four set-ups. Set
par. 0-10 Active Set-up to Multi Set-up.
[24] Set-up (Default Digital input 32): Same as Set-up select
select bit 1 bit 0 [23].
[26] Precise Prolongs stop signal to give a precise stop
stop inv. independent of speed.
Sends an inverted stop signal when the precise
stop function is activated in par. 1-83 Precise Stop
Function.
Precise stop inverse function is available for
terminals 18 or 19.
[27] Precise Use when Precise ramp stop [0] is selected in
start, stop par. 1-83 Precise Stop Function.
[28] Catch up Increases reference value by percentage (relative)
set in par. 3-12 Catch up/slow Down Value.
[29] Slow Reduces reference value by percentage (relative)
down set in par. 3-12 Catch up/slow Down Value.
[30] Counter Precise stop function in par. 1-83 Precise Stop
input Function acts as Counter stop or speed compen-
sated counter stop with or without reset. The
counter value must be set in par. 1-84 Precise Stop
Counter Value.
Shut down Catch up
0 0
1 0
0 1
1 1
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