beautypg.com

Application examples, Pressure control, Fig. 13−3 signal flow − overview – Lenze 8200 motec frequency inverter 0.25kW-7.5kW User Manual

Page 192

background image

Application examples

Pressure control

13−7

L

EDB82MV752 EN 5.2

13.1.2

Example 2: Simple pressure control with changeable setpoint selection

The actual value is supplied via the analog input of the standard I/O

0 and linked to the controller

input (PCTRL−ACT).

The setpoint is defined with the motor potentiometer function

1 and supplied to the process

controller via the controller input (PCTRL1−NADD). This value is added to the value from the speed
feedforward control (NSET1). This requires the output of the speed feedforward control
(NSET1−NOUT) to be zero.

PCTRL1

DCTRL1-QSP

DCTRL1-CINH

C0412/3

PCTRL1-NADD

C0105

C0220
C0221

+

C0181

PCTRL1-SET2

C0049

PCTRL1-RFG1

2

0

C0412/5

PCTRL1-ACT

C0412/4

PCTRL1-SET1

1

PCTRL1-SET3

C0145

C0071

C0070
C0072

1

>

C0410/18

PCTRL1-I-OFF

C0410/21

PCTRL1-STOP

C0410/19

PCTRL1-OFF

DFIN1

STOP

Imax,
Auto-DCB,
LU, OU

1

>

0

1

CINH, DCB

C0074

C0184

RESET

+

0

2
1

C0238

C0011

-C0011

PCTRL1-NOUT

PCTRL1-OUT

PCTRL1-QMIN

PCTRL1-NMIN

C0010

PCTRL1-ACT

C0017

PCTRL1-SET=ACT

PCTRL1-SET

NSET1-NOUT

C0138

C0239

DCTRL1

2

0,1

C0238

C0051

+

2
1

PCTRL1-SET3

0

AIN1

+

AIN1-GAIN

+

AIN1-OFFSET

C0414/1

C0413/1

C0010

C0034

A

D

X3

AIN1-OUT

8

7

MPOT1

MPOT1-OUT

C0265

C0410/7

MPOT1-UP

C0410/8

MPOT1-DOWN

MPOT1-QSP

C0011

C0010

C0265=3,4,5

MPOT

INIT

DIGIN1

X3

1

1

0

E1

E2

E4

E3

C0411

1

0

8200vec544

Fig. 13−3

Signal flow − overview