Danfoss VLT AutomationDrive FC 300 Design Manual page 166

FC 300 Design Guide
DC-brake inverse
•
braking (NC). Stops the motor by energizing
it with a DC current for a certain time period.
See par. 2-01 to par. 2-03. The function is only
active when the value in par. 2-02 is different
from 0. Logic '0' => DC braking.
Stop inverse [6]: 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 (par. 3-42, par. 3-52, par. 3-62, par. 3-72).
NB!:
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 "Torque limit & stop
[27]" and connect this digital output to a digital
input that is configured as coast.
Start [8] (Default Digital input 18): Select
•
start for a start/stop command. Logic '1'
= start, logic '0' = stop.
Latched start [9]: The motor starts, if a
•
pulse is applied for min. 2 ms. The motor
stops if you activate Stop inverse.
Reversing [10]: (Default Digital input 19).
•
Changes 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. The function is not
active in Torque control, speed feedback.
• Start reversing [11]: Used for start/stop and
for reversing on the same wire. Signals on
start are not allowed at the same time.
Enable start forward
•
motor shaft is only to rotate clockwise at start.
• Enable start reverse
shaft is only to rotate counterclockwise at start.
Jog [14] (Default Digital input 29): Is used for
•
shifting between external reference and preset
reference. You must select External/preset [2]
in par. 2-14. Logic '0* = external references
active; Logic '1' = one of the four references
is active according to the table below
• Preset ref bit 0 [16]: Preset ref. bit 0,1, and
2 enables a choice between one of the eight
preset references according to the table below.
Preset ref bit 1
•
ref bit 0 [16].
Out of feedback range
•
range is set in par. 4-56 and 4-57.
default setting ( )
*
166
How to Programme
[5]: Inverted input for DC
[12]: Is used if the
[13]: Is used if the motor
[17]: Same as Preset
[18]: The feedback
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
Present 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
Freeze ref [19]: Freezes the actual reference.
•
The frozen reference 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 (par. 3-51
and 3-52) in the range 0 - par. 3-03.
Freeze output [20]: Freezes the actual motor
•
frequency (Hz). The frozen motor frequency 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
(par. 3-51 and 3-52) in the range 0 - par. 1-23.
NB!:
If Freeze output is active, you cannot
stop the frequency converter via a low
"start [13]" signal. Stop the frequency
converter via a terminal programmed for Coasting
inverse [2] or Coast and reset, inverse.
Speed up [21]: Select Speed up and Speed
•
down if digital control of the up/down speed
is desired (motor potentiometer). Activate
this function by selecting either Freeze
reference or Freeze output.
When Speed up is activated for less than 400
msec. the resulting reference will be increased
by 0.1 %. If Speed up is activated for more than
400 msec. the resulting reference will ramp
you according to Ramp 2 (par. 3-41).
Unchanged speed
Reduced by %-value
Increased by %-value
Reduced by %-value
• Slow down [29]: Same as Catch up [28].
Pulse input [32]: Select Pulse input if you
•
use a pulse sequence as either reference or
feedback. Scaling is done in par. group 5-5*.
Ramp bit 0 [34]
•
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
Slow down Catch up
0 0
1 0
0 1
1 1