stops, the shaft is in free mode. Logic ‘0’ =>
Quick-stop.
[5] DC-brake
inverse
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.
[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 (3-42 Ramp 1 Ramp Down Time,
3-52 Ramp 2 Ramp down Time, 3-62 Ramp 3
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.
[8] Start (Default Digital input 18): Select start for a
start/stop command. Logic ‘1’ = start, logic ‘0’
= stop.
[9] Latched
start
The motor starts, if a pulse is applied for min.
2ms. The motor stops when Stop inverse is
activated or a reset command (via DI) is
given.
[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 4-10 Motor Speed Direction. The
function is not active in process closed loop.
[11] Start
reversing
Used for start/stop and for reversing on the
same wire. Signals on start are not allowed at
the same time.
[12] Enable start
forward
Disengages the counterclockwise movement
and allows for the clockwise direction.
[13] Enable start
reverse
Disengages the clockwise movement and
allows for the counterclockwise direction.
[14] Jog (Default Digital input 29): Use to activate jog
speed. See 3-11 Jog Speed [Hz].
[15] Preset
reference on
Shifts between external reference and preset
reference. It is assumed that [1] External/preset
has been selected in 3-04 Reference Function.
Logic '0' = external reference active; logic '1'
= one of the eight preset references is active.
[16] Preset ref
bit 0
Preset ref. bit 0,1, and 2 enables a choice
between one of the eight preset references
according toTable 6.6.
[17] Preset ref
bit 1
Same as Preset ref bit 0 [16].
[18] Preset ref
bit 2
Same as Preset ref bit 0 [16].
Preset ref. bit 2 1 0
Preset ref. 0 0 0 0
Preset ref. 1 0 0 1
Preset ref. 2 0 1 0
Preset ref. 3 0 1 1
Preset ref. 4 1 0 0
Preset ref. 5 1 0 1
Preset ref. 6 1 1 0
Preset ref. 7 1 1 1
Table 6.6 Preset Ref. Bit
[19] Freeze
ref
Freezes the actual reference, which is 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 (3-51 Ramp 2
Ramp up Time and 3-52 Ramp 2 Ramp down Time)
in the range 0 - 3-03 Maximum Reference.
[20] Freeze
output
Freezes the actual motor frequency (Hz), which is
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
(3-51 Ramp 2 Ramp up Time and 3-52 Ramp 2
Ramp down Time) in the range 0 - 1-23 Motor
Frequency.
NOTE
When Freeze output is active, the frequency
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
up
Select Speed up and Speed down if digital control
of the up/down speed is desired (motor potenti-
ometer). Activate this function by selecting either
Freeze reference or Freeze output. When Speed
up/ down is activated for less than 400msec. the
resulting reference will be increased/ decreased by
0.1 %. If Speed up/ down is activated for more
than 400msec. the resulting reference will follow
the setting in ramping up/ down parameter 3-x1/
3-x2.
Shut down Catch up
Unchanged speed 0 0
Reduced by %-value 1 0
Increased by %-value 0 1
Reduced by %-value 1 1
Table 6.7
[22]
Speed
down
Same as Speed up [21].
How to Programme the Low Ha... VLT Automation Low Harmonic Drive Operating Instructions
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