5.11 Danfoss FC Control Profile
5.11.1 Control Word According to FC Profile
(8–10 Protocol = FC Profile)
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 5.13 Control Word According to FC Profile
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
Relay 01 open
Relay 01 active
12
Relay 02 open
Relay 02 active
13
Parameter set-up
Selection lsb
15
No function
Reverse
Table 5.34 Control Word According to FC Profile
Explanation of the control bits
Bits 00/01
Bits 00 and 01 are used to select among the 4 reference
values, which are preprogrammed in
parameter 3-10 Preset
Reference
according to
Programmed
reference
value
Parameter
Bit
01
Bit
00
1
Parameter 3-10 Preset Reference
[0] 0
0
2
Parameter 3-10 Preset Reference
[1] 0
1
3
Parameter 3-10 Preset Reference
[2] 1
0
4
Parameter 3-10 Preset Reference
[3] 1
1
Table 5.35 Control Bits
NOTICE
In
parameter 8-56 Preset Reference Select
, 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
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: The frequency converter immediately releases the
motor (the output transistors are shut off), and it coasts to
a standstill.
Bit 03=1: If the other starting conditions are met, the
frequency converter starts the motor.
In
parameter 8-50 Coasting Select
, 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
parameter 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 programmed to
[21] Speed up
and
[22] Speed down
(
parameter 5-10 Terminal 18 Digital Input
to
parameter 5-13 Terminal 29 Digital Input
).
NOTICE
If freeze output is active, the frequency converter can
only be stopped by 1 of the following:
•
Bit 03 Coasting stop.
•
Bit 02 DC braking.
•
Digital input programmed to
[5] DC-brake
inverse
,
[2] Coast inverse
, or
[3] Coast and reset
inv
(
parameter 5-10 Terminal 18 Digital Input
to
parameter 5-13 Terminal 29 Digital Input
).
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: Allows the frequency converter to start the motor
if the other starting conditions are met.
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: No reset.
Bit 07=1: Resets a trip. Reset is activated on the leading
signal edge, that is, when changing from logic 0 to logic 1.
Bit 08, Jog
Bit 08=1:
Parameter 3-11 Jog Speed [Hz]
determines the
output frequency.
Bit 09, Selection of ramp 1/2
Bit 09=0: Ramp 1 is active (
parameter 3-41 Ramp 1 Ramp
Up Time
to
parameter 3-42 Ramp 1 Ramp Down Time
).
Bit 09=1: Ramp 2 (
parameter 3-51 Ramp 2 Ramp Up Time
to
parameter 3-52 Ramp 2 Ramp Down Time
) is active.
RS485 Installation and Set-...
VLT
®
Midi Drive FC 280
68
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MG07B102
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