17 function library – Lenze 8400 StateLine User Manual
Page 973
Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14
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17
Function library
17.1
Function blocks
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nSet_a
INT
Sensor and process setpoint for operating modes 2, 4 and 5
• Scaling: 16384 ≡ 100 %
• Internal limitation to ± 199.99 %
nAct_a
INT
Speed or actual sensor value (actual process value)
• Scaling: 16384 ≡ 100 %
• Internal limitation to ± 199.99 %
bInAct
BOOL
Deactivate process controller temporarily (stop)
• Changes can be done online.
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.
TRUE The I component of the process controller is set to zero.
nInfluence_a
INT
Limitation of the influencing factor in percent
• nInfluence_a serves to limit the influencing factor of the PID controller contained
in the FB to a required value (- 199.99 % ... + 199.99 %).
• Scaling: 16384 ≡ 100 %
• Internal limitation to ± 199.99 %
bEnableInfluenceRamp
BOOL
Activate ramp for influencing factor
TRUE Influencing factor of the PID controller is ramped up to the
nInfluence_a value.
FALSE Influencing factor of the PID controller is ramped down to "0".
bISet
BOOL
Accept I component nISet_a in PID controller
TRUE The value at the input nISet_a is accepted in the PID controller.
nISet_a
INT
Selection of I component of PID controller
• With a TRUE signal at bISet, the assigned value is accepted in the PID controller.
• Scaling: 16384 ≡ 100 %
• Internal limitation to ± 199.99 %
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.
Identifier
Data type
Information/possible settings