Danfoss Fc Control Profile; Control Word According To Fc Profile (8-10 Protocol = Fc Profile) - Danfoss VLT FC 360 Design Manual

RS-485 Installation and Set...
Field Name
Slave Address
Function
Starting Address HI
Starting Address LO
3 3
No. of Registers HI
No. of registers LO
Error Check (CRC)
Table 3.32 Response

3.11 Danfoss FC Control Profile

3.11.1 Control Word According to FC
Profile (8-10 Protocol = FC profile)
Master-slave
Bit
no.:
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Illustration 3.12 Control Word According to FC Profile
Bit Bit value=0
00 Reference value
01 Reference value
02 DC brake
03 Coasting
04 Quick stop
05 Hold output
frequency
06 Ramp stop
07 No function
08 No function
09 Ramp 1
10 Data invalid
11 Relay 01 open
12 Relay 02 open
13 Parameter set-up
15 No function
Table 3.33 Control Word According to FC Profile
Explanation of the control bits
Bits 00/01
Bits 00 and 01 are used to choose between the four
reference values, which are pre-programmed in 3-10 Preset
Reference according to the Table 3.35.
56
Example (HEX)
01
10
04
19
00
02
-
CTW Speed ref.
Bit value=1
external selection lsb
external selection msb
Ramp
No coasting
Ramp
use ramp
Start
Reset
Jog
Ramp 2
Data valid
Relay 01 active
Relay 02 active
selection lsb
Reverse
MG06B202 - VLT
®
VLT AutomationDrive FC 360 Design Guide
Programmed
ref. value
1
2
3
4
Table 3.34 Control Bits
NOTE
Make a selection in 8-56 Preset Reference Select to define
how Bit 00/01 gates with the corresponding function on
the digital inputs.
Bit 02, DC brake
Bit 02='0' leads to DC braking and stop. Set braking
current and duration in 2-01 DC Brake Current and 2-02 DC
Braking Time.
Bit 02='1' leads to ramping.
Bit 03, Coasting
Bit 03='0': The frequency converter immediately "lets go"
of the motor, (the output transistors are "shut off") and it
coasts to a standstill.
Bit 03='1': The frequency converter starts the motor if the
other starting conditions are met.
Make a selection in 8-50 Coasting Select to define how Bit
03 gates with the corresponding function on a digital
input.
Bit 04, Quick stop
Bit 04='0': Makes the motor speed ramp down to stop (set
in 3-81 Quick Stop Ramp Time).
Bit 05, Hold output frequency
Bit 05='0': The present output frequency (in Hz) freezes.
Change the frozen output frequency only with the digital
inputs (5-10 Terminal 18 Digital Input to 5-13 Terminal 29
Digital Input) programmed to Speed up=21 and Slow
down=22.
NOTE
If Freeze output is active, the frequency converter can only
be stopped by the following:
•
•
•
Bit 06, Ramp stop/start
Bit 06='0': Causes a stop and makes the motor speed ramp
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 met.
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is a registered Danfoss trademark
Parameter
3-10 Preset Reference [0]
3-10 Preset Reference [1]
3-10 Preset Reference [2]
3-10 Preset Reference [3]
Bit 03 Coasting stop
Bit 02 DC braking
Digital input (5-10 Terminal 18 Digital Input to
5-13 Terminal 29 Digital Input) programmed to DC
braking=5, Coasting stop=2, or Reset and coasting
stop=3.
Bit Bit
01 00
0 0
0 1
1 0
1 1