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5.6 Danfoss FC Control Profile
5.6.1 Control Word According to FC Profile
Bit
Bit value = 0
Bit value = 1
00
Preset reference select - lsb
Preset reference select - lsb
01
Preset reference select - msb
Preset reference select - msb
02
DC brake
Ramp
03
Coasting
No coasting
04
Quick stop
Ramp
05
Freeze output
No freeze output
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
No function
13
Setup 1
Setup 2
14
No function
No function
15
No function
Reverse
5.6.2 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 par. 3-10
Preset Reference
according to the following
table:
Programmed ref. value
Parameter
Bit 01
Bit 02
1
3-10 [0]
0
0
2
3-10 [1]
0
1
3
3-10 [2]
1
0
4
3-10 [3]
1
1
NB!
In par. 8-56
Preset reference
a selection is made 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. Braking current and duration are set in par. 2-01
DC Brake current
and 2-02
Braking time
.
Bit 02 = “1” leads to ramping.
VLT
®
Micro Drive FC 51 Operating Instructions
5 Modbus RTU
MG.02.A4.02 - VLT
®
is a registered Danfoss trademark
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