3.9.12 FC Drive Control Profile
3.9.12.1 Control Word According to FC
Profile (
parameter 8-10 Control
Profile
=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 3.56 Control Word
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
Parameter set-up
Selection msb
15
No function
Reverse
Table 3.41 Control Word Bits
Explanation of the Control Bits
Bits 00/01
Bits 00 and 01 are used to select between the 4 reference
values, which are pre-programmed 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 3.42 Reference Values
NOTICE
Make a selection in
parameter 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
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.
Make a selection in
parameter 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
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 (
parameter 5-10 Terminal 18 Digital Input
to
parameter 5-15 Terminal 33 Digital Input
) programmed to
Speed up
and
Slow down
.
NOTICE
If freeze output is active, stop the frequency converter
by the following:
•
Bit 03 Coasting stop.
•
Bit 02 DC braking.
•
Digital input (
parameter 5-10 Terminal 18 Digital
Input
to
parameter 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: If the other starting conditions are met, allow the
frequency converter to start the motor.
Make a selection in
parameter 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 signal’s
leading edge, for example, when changing from logic 0 to
logic 1.
System Integration
Design Guide
MG16G202
Danfoss A/S © 08/2015 All rights reserved.
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