Danfoss VLT CANopen MCA 105 - Danfoss FC Control Profile; Control Word According to FC Profile (Parameter 8-10 = FC Profile)

4.4 Danfoss FC control prole
4.4.1 Control Word according to FC Prole
(parameter 8-10 = FC prole)
Speed ref.CTW
Master-follower
130BA274.11
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
no.:
Illustration 4.5 Control Word
Bit Bit value = 0 Bit value = 1
00 Reference value External selection lsb
01 Reference value External selection msb
02 DC brake Ramp
03 Coasting No coasting
04 Quick stop Ramp
05 Hold output
frequency
Use ramp
06 Ramp stop Start
07 No function Reset
08 No function Jog
09 Ramp 1 Ramp 2
10 Data invalid Data valid
11 No function Relay 01 active
12 No function Relay 04 active
13 Parameter set-up Selection lsb
14 Parameter set-up Selection msb
15 No function Reverse
Table 4.8 Control Bits
Explanation of the control bits
Bits 00/01
Bits 00 and 01 are used to select between the 4 reference
values, which are pre-programmed in parameter 3-10 Preset
Reference according to Table 4.9.
Set-up Bit 14 Bit 13
1 0 0
2 0 1
3 1 0
4 1 1
Table 4.9 Set-up
NOTICE
In parameter 8-56 Preset Reference Select a selection is
made to dene how bit 00/01 gates with the
corresponding function on the digital inputs.
Bit 02, DC brake:
Bit 02 = 0 leads to DC brake and stop. Braking current and
duration are set in parameter 2-01 DC Brake Current and
parameter 2-02 DC Braking Time.
Bit 02 = 1 leads to ramping.
Bit 03, Coasting:
Bit 03 = 0 causes the frequency converter to immediately
release the motor (the output transistors are "shut o"), so
that it coasts to a standstill.
Bit 03 = 1 enables the frequency converter to start the
motor if the other starting conditions are fullled.
NOTICE
In parameter 8-50 Coasting Select, a selection is made to
dene how bit 03 gates with the corresponding function
on a digital input.
Bit 04, Quick stop:
Bit 04 = 0 causes a stop, in which the motor speed is
ramped down to stop via parameter 3-81 Quick Stop Ramp
Time.
Bit 05, Hold output frequency:
Bit 05 = 0 causes the present output frequency (in Hz) to
freeze. The frozen output frequency can then be changed
only with the digital inputs (parameter 5-10 Terminal 18
Digital Input to parameter 5-15 Terminal 33 Digital Input)
programmed to speed up and speed down.
NOTICE
If freeze output is active, the frequency converter can
only be stopped by the following:
•
Bit 03 Coasting stop.
•
Bit 02 DC braking.
•
Digital input (parameter 5-10 Terminal 18 Digital
Input to parameter 5-15 Terminal 33 Digital
Input) programmed to DC braking, coasting stop
or reset and coasting stop.
Bit 06, Ramp stop/start:
Bit 06 = 0 causes a stop, in which the motor speed is
ramped down to stop via the selected ramp-down
parameter.
Bit 06 = 1 permits the frequency converter to start the
motor, if the other starting conditions are fullled.
NOTICE
In parameter 8-53 Start Select a selection, is made to
dene how bit 06 Ramp stop/start gates with the
corresponding function on a digital input.
Control
VLT
®
CANopen MCA 105
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