Lenze 8400 TopLine - Manual (Page 1562)

19 Function library
19.1 Function blocks
1562
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
19.1.107.1 Activate & control motor potentiometer
When bInAct is set to FALSE, the motor potentiometer is activated.
• The currently active function depends on the current output signal nOut_a, the limit values set
and the control signals at bUp and bDown.
• When the nOut_a output signal is outside the limits set, the output signal runs to the next limit
with the Ti times set. This process is independent of the control signals at bUp and bDown.
• When the nOut_a output signal is inside the limits set, the output signal changes according to
the control signals at bUp and bDown.
[19-49] Example: Control of the motor potentiometer
nOut_a
t
t
TRUE
FALSE
bUp
t
TRUE
FALSE
bDown
nHighLimit
nLowLimit
0
wTir
wTir
wTif
wTir
bUp bDown bInact Function
FALSE FALSE FALSE The nOut_a output signal remains unchanged.
TRUE FALSE The nOut_a output signal runs to its upper limit value (nHighLimit).
FALSE TRUE The nOut_a output signal runs to its lower limit value (nLowLimit).
TRUE TRUE The nOut_a output signal remains unchanged.
- - TRUE The motor potentiometer function is deactivated. The nOut_a
output signal responds according to the function selected via
Function.