beautypg.com

13 application examples – Lenze 8400 motec User Manual

Page 503

background image

Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05

503

13

Application examples

13.1

Sequence control

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Process controller

L_PCTRL_1

C00222

L_PCTRL_1: Vp

1.0

Note!

Adapt control mode of the PID process

controller to the concrete application!

C00223

L_PCTRL_1: Tn

1000 ms

C00224

L_PCTRL_1: Kd

0.0

C00225

L_PCTRL_1: MaxLimit

105.0 %

Maximum level of pump 1.

C00226

L_PCTRL_1: MinLimit

0.0 %

No reversal of direction of the pump.

C00242

L_PCTRL_1: Operating mode

2: PID as setpoint

generator.

As PID input values, the process setpoint

(nSet_a) and the actual process value

(nAct_a) are used.

The speed setpoint (nNSet_a) is not con-

sidered.

C00700/7

LA_NCtrl: nPIDActValue_a

10: AIn1_Out

The actual process value (nAct_a) is de-

tected via the analog input 1.

(Actual process value = current water lev-

el)

C00700/9

LA_NCtrl: nPIDSetValue_a

20: nPar1_a

The process setpoint (nSet_a) is defined

via the free parameter

C00472/1

.

C00472/1

LS_ParFree_a: Value 1

70.0 %

Selection of the process setpoint.

(Process setpoint = desired water level)

GP function "Analog comparison"

L_Compare_1

C00680

L_Compare_1: Fct.

6: |In1| < |In2|

Comparison operation:

|

C00472/2

| < |Actual speed value|

C00681

L_Compare_1: Hysteresis

95.0 %

Hysteresis for comparison

C00700/13

L_Compare_1: nIn1_a

21: nPar2_a

The comparison value 1 is selected via

the free parameter

C00472/2

.

C00700/14

L_Compare_1: nIn2_a

52: LA_NCtrl_

nMotorSpeedAct_a

Comparison value 2 is the actual speed

value.

• 100 % ≡ reference speed (

C00011

)

C00472/2

LS_ParFree_a: Value 2

100.0 %

Selection of the comparison value 1.

GP function "Binary delay element"

L_DigitalDelay_1

C00720/1

L_DigitalDelay_1: On delay

30 s

Switch-on delay for pump 2

C00720/2

L_DigitalDelay_1: Off delay

120 s

Switch-off delay for pump 2

C00701/23

L_DigitalDelay_1: bIn

215:

L_Compare1_bOut

Input value of the delay element is the re-

sult of comparison.

Parameter

Info

Setting

Info