6 control functions, Control functions, 17 function library – Lenze 8400 StateLine User Manual

Page 979

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Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14

979

17

Function library

17.1

Function blocks

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17.1.39.6 Control functions

The process controller has various digital inputs for controlling the FB:

Identifier

Data type

Information/possible settings

bInAct

BOOL

Deactivate process controller temporarily (stop)

• Changes can be done online.

• Display parameter:

C00833/76

Note: This input is not interconnected in the LA_NCtrl application block.

TRUE

• The current output value is frozen.

• The internal control algorithm is stopped.

• However, a setpoint selected via input nNSet_a is still provided in

operating modes 0/1/4/5.

bIOff

BOOL

Switch off the I-component of the process controller

• Changes can be done online.

• Display parameter:

C00833/77

TRUE The I component of the process controller is set to zero.

bPIDOff

BOOL

(from version 06.00.00)

Reset the entire PID controller

TRUE

• The I component of the controller is set to zero.

• The controller output is set to zero.

• The internal control algorithm is stopped.

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