Danfoss VLT AQUA Drive FC 202 Design Manual page 144

Application Examples
Start
event P13-01
Stop
event P13-02
State 4
13-51.3
13-52.3
Illustration 6.4 Events and Actions
6 6
SLC Application Example
One sequence 1:
Start – ramp up – run at reference speed 2 seconds – ramp down and hold shaft until stop.
Max. ref.
P 3-03
Preset ref.(0)
P 3-10(0)
Preset ref.(1)
P 3-10(1)
Term 18
P 5-10(start)
Illustration 6.5 Ramp Up/Ramp Down
Set the ramping times in 3-41 Ramp 1 Ramp Up Time and 3-42 Ramp 1 Ramp Down Time to the wanted times
tacc × nnorm par . 1 − 25
tramp =
Set term 27 to No Operation (5-12 Terminal 27 Digital Input)
Set Preset reference 0 to first preset speed (3-10 Preset Reference [0]) in percentage of Max reference speed (3-03 Maximum
Reference). Ex.: 60%
Set preset reference 1 to second preset speed (3-10 Preset Reference [1] Ex.: 0% (zero).
Set the timer 0 for constant running speed in 13-20 SL Controller Timer [0]. Ex.: 2 s
Set Event 1 in 13-51 SL Controller Event [1] to True [1]
Set Event 2 in 13-51 SL Controller Event [2] to On Reference [4]
Set Event 3 in 13-51 SL Controller Event [3] to Time Out 0 [30]
Set Event 4 in 13-51 SL Controller Event [4] to False [0]
Set Action 1 in 13-52 SL Controller Action [1] to Select preset 0 [10]
Set Action 2 in 13-52 SL Controller Action [2] to Start Timer 0 [29]
Set Action 3 in 13-52 SL Controller Action [3] to Select preset 1 [11]
Set Action 4 in 13-52 SL Controller Action [4] to No Action [1]
Set the in 13-00 SL Controller Mode to ON.
142
State 1
13-51.0
13-52.0
State 2
13-51.1
13-52.1
State 3
13-51.2
13-52.2
Stop
event P13-02
State 2
State 1
2 sec
ref RPM
Danfoss A/S © Rev. 06/2014 All rights reserved.
Design Guide
In applications where a PLC is generating a simple
sequence, the SLC takes over elementary tasks from the
main control.
SLC is designed to act from event send to or generated in
the frequency converter. The frequency converter then
performs the pre-programmed action.
Stop
event P13-02
State 3
2 sec
MG20Z202