Bit
Bit value = 0
Bit value = 1
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
14
Parameter set-up
Selection msb
15
No function
Reverse
8.11.2 Explanation of Each Control Bit
8.11.2.1 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
ac-
cording to the following table.
Table 85: Control Bits
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
N O T I C E
In
parameter 8-56 Preset Reference Select
, define how bit 00/01 gates with the corresponding function on the digital inputs.
8.11.2.2 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.
8.11.2.3 Bit 03, Coasting
Bit 03 = 0: The drive 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 drive starts the motor.
In
parameter 8-50 Coasting Select
, define how bit 03 gates with the corresponding function on a digital input.
8.11.2.4 Bit 04, Quick Stop
Bit 04 = 0: Makes the motor speed ramp down to stop (set in
parameter 3-81 Quick Stop Ramp Time
).
AJ363928382091en-000101 / 130R0983
126 | Danfoss A/S © 2021.04
RS485 Installation and Set-up
VLT® Flow Drive FC 111
Design Guide