4.5 FC Drive Control Profile
4.5.1 Control Word According to FC Profile
(CTW)
To select Danfoss FC protocol in the control word, set
parameter 8-10 Control Word Profile
to
[0] FC
profile
. Use the
control word to send commands from a master (PLC or PC)
to a slave (frequency converter).
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 02 active
13
Parameter set-up
Selection lsb
14
No function
No function
15
Forward
Reverse
Table 4.11 Bit Values for FC Control Word
Explanation of the control bits
Bits 00/01, reference value
Use bits 00 and 01 to select between the 4 reference
values, which are pre-programmed in
parameter 3-10 Preset
Reference
according to
NOTICE
In
parameter 8-56 Preset Reference Select
, a selection is
made to define how bit 00/01 gates with the
corresponding function on the digital inputs.
Bit
01
Bit
00
Programmed
reference value
Parameter
0
0
1
[0]
Parameter 3-10 Preset Reference
0
1
2
[1]
Parameter 3-10 Preset Reference
1
0
3
[2]
Parameter 3-10 Preset Reference
1
1
4
[3]
Parameter 3-10 Preset Reference
Table 4.12 Programmed Reference Values for Bits
Bit 02, DC brake
Bit 02 = 0 leads to DC braking 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 immediately to
coast the motor to a standstill.
Bit 03 = 1 enables the frequency converter to start the
motor if the other starting conditions have been fulfilled.
NOTICE
In
parameter 8-50 Coasting Select
, a selection is made to
define how bit 03 gates with the corresponding function
on a digital input.
Bit 04, quick stop
Bit 04 = 0 quick stops the frequency converter and ramps
the motor speed down to stop via
parameter 3-81 Quick
Stop Ramp Time
.
Bit 04 = 1 makes the frequency converter ramp the motor
speed down to stop via
parameter 3-42 Ramp 1 Ramp
Down Time
or
parameter 3-52 Ramp 2 Ramp Down Time
.
Bit 05, hold output frequency
Bit 05 = 0 freezes the present output frequency (in Hz).
The frozen output frequency can only be changed with the
digital inputs (
parameter 5-10 Terminal 18 Digital Input
to
parameter 5-15 Terminal 33 Digital Input
) programmed to
[21] Speed up
and
[22] Speed down
.
Bit 05 = 1 uses ramp.
Bit 06, ramp stop/start
Bit 06 = 0 stops the frequency converter and the motor
speed ramps down to stop via the selected ramp-down
parameter.
Bit 06 = 1 allows the frequency converter to start the
motor if the other starting conditions have been fulfilled.
NOTICE
In
parameter 8-53 Start Select
, define how bit 06 ramp
stop/start gates with the corresponding function on a
digital input.
Bit 07, reset
Bit 07 = 0 does not cause a reset.
Bit 07 = 1 resets a trip. Reset is activated on the signal’s
leading edge, that is, when changing from logic 0 to logic
1.
Bit 08, jog
Bit 08 = 0, no function.
Bit 08 = 1,
parameter 3-19 Jog Speed [RPM]
determines the
output frequency.
Bit 09, selection of ramp 1/2
Bit 09 = 0, ramp 1 is active (
parameter 3-40 Ramp 1 Type
to
parameter 3-47 Ramp 1 S-ramp Ratio at Decel. Start
).
Bit 09 = 1, ramp 2 is active (
parameter 3-50 Ramp 2 Type
to
parameter 3-57 Ramp 2 S-ramp Ratio at Decel. Start
).
Control
PROFINET
18
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MG06G102
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