Danfoss Fc Control Profile; Control Word According To Fc Profile (8-10 Control Profile = Fc Profile) - Danfoss VLT FC 102 Series Design Manual

Installation and Set-up

8.11 Danfoss FC Control Profile

8.11.1 Control Word According to FC
Profile (8-10 Control Profile = FC
profile)
Master-follower
CTW
Bit
no.:
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 8.16 Control Word
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 No function
12 No function
13 Parameter set-up
14 Parameter set-up
15 No function
Table 8.33 Control Word Bits
Explanation of the Control Bits
Bits 00/01
Bits 00 and 01 are used to select between the four
reference values, which are pre-programmed in 3-10 Preset
Reference according to Table 8.34.
Programmed Parameter
ref. value
1 3-10 Preset
Reference [0]
2 3-10 Preset
Reference [1]
3 3-10 Preset
Reference [2]
4 3-10 Preset
Reference [3]
Table 8.34 Reference Values
MG11BC22
Design Guide
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
Selection msb
Reverse
Bit 01 Bit 00
0 0
0 1
1 0
1 1
Danfoss A/S © Rev. 06/2014 All rights reserved.
NOTICE!
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 adjustable frequency drive immediately
"lets go" of the motor (the output transistors are "shut
off"), and it coasts to a standstill. Bit 03 = '1':
The adjustable frequency drive 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 5-15 Terminal 33
Digital Input) programmed to Speed up and Slow-down.
NOTICE!
If Freeze output is active, the adjustable frequency drive
can only be stopped by the following:
•
Bit 03 Coasting stop
•
Bit 02 DC braking
•
Digital input (5-10 Terminal 18 Digital Input to
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 and makes the motor speed
ramp down to stop via the selected ramp-down parameter.
Bit 06 = '1': Permits the adjustable frequency drive to start
the motor if the other starting conditions are met.
Make a selection in 8-53 Start Select to define how Bit 06
Ramp stop/start gates with the corresponding function on
a digital input.
Bit 07, Reset
Bit 07 = '0': No reset. Bit 07 = '1': Resets a trip. Reset is
activated on the leading edge of the signal, i.e. when
changing from logic '0' to logic '1'.
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