Danfoss Fc Control Profile; Control Word According To Fc Profile (8-10 Protocol = Fc Profile) - Danfoss VLT HVAC Basic Drive FC 101 Design Manual

RS485 Installation and Set-...

7.11 Danfoss FC Control Profile

7.11.1 Control Word According to FC Profile
(8–10 Protocol = FC Profile)
Master-follower
Bit
no.:
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Illustration 7.15 Control Word According to FC Profile
Bit Bit value = 0
00 Reference value
01 Reference value
02 DC brake
7 7
03 Coasting
04 Quick stop
Hold output
05
frequency
06 Ramp stop
07 No function
08 No function
09 Ramp 1
10 Data invalid
11 Relay 01 open
12 Relay 02 open
13 Parameter set-up
15 No function
Table 7.36 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 Table 7.37.
Programmed
reference
value
1
2
3
4
Table 7.37 Control Bits
NOTICE
In parameter 8-56 Preset Reference Select, define how bit
00/01 gates with the corresponding function on the
digital inputs.
96
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
Reverse
Parameter
Parameter 3-10 Preset Reference [0]
Parameter 3-10 Preset Reference [1]
Parameter 3-10 Preset Reference [2]
Parameter 3-10 Preset Reference [3]
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®
VLT HVAC Basic Drive FC 101
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 in 1 of the following ways:
•
•
•
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.
Bit Bit
01 00
In parameter 8-53 Start Select, define how bit 06 ramp stop/
start gates with the corresponding function on a digital
0 0
input.
0 1
Bit 07, Reset
1 0
Bit 07 = 0: No reset.
1 1
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.
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).
MG18C702