Fc Drive Control Profile - Danfoss VLT AQUA Drive FC 202 Design Manual

System Integration

3.8.12 FC Drive Control Profile

3.8.12.1 Control Word According to FC
Profile (8-10 Control Profile=FC
profile)
3 3
Master-follower
Bit
no.: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Illustration 3.55 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 3.43 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 3-10 Preset Reference
according to Table 3.44.
Programmed ref.
value
1
2
3
4
Table 3.44 Reference Values
88
CTW 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
Parameter Bit 01
3-10 Preset 0
Reference [0]
3-10 Preset 0
Reference [1]
3-10 Preset 1
Reference [2]
3-10 Preset 1
Reference [3]
Danfoss A/S © 09/2014 All rights reserved.
Design Guide
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 frequency converter immediately releases the
motor, (the output transistors are shut off) and it coasts to
a standstill.
Bit 03=1: The frequency converter 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 frequency converter can
only be stopped by the following:
•
•
•
Bit 06, Ramp stop/start
Bit 00
Bit 06=0: Causes a stop and makes the motor speed ramp
down to stop via the selected ramp down parameter.
0
Bit 06=1: Permits the frequency converter to start the
motor, if the other starting conditions are met.
1
Make a selection in 8-53 Start Select to define how bit 06
Ramp stop/start gates with the corresponding function on
0
a digital input.
1
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.
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.
MG20N602