Lenze 8400 - Manual (Page 1385)

Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
1385
18 Function library
18.1 Function blocks | L_ProcessCtrl_1
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18.1.142 L_ProcessCtrl_1
This FB serves to implement a dancer position or tension control.
The FB is provided with the following functions:
• Adjustable control algorithm (P, PI, PID) with adaptable gain
• Reduced controller dynamics at low system deviation
• Setpoint ramp generator for preventing setpoint step-changes at the input
• Setpoint ramp generator can be loaded with actual value
• Low-pass filter and rate action in the actual value feedback
• Integral action component can be switched off
• Interruptible control
Inputs
Identifier
Data type
Information/possible settings
nVpAdapt_a
INT
Proportional evaluation of the controller gain (Vp)
• Scaling: 16384 ≡ 100 %
• Internal limitation to 0 ... 16384 (0 ... 100 %)
nSet_a
INT
Controller setpoint
bLoadAct
BOOL
Accept actual controller value
TRUE The actual controller value nAct_a is taken over into the ramp
generator, the low pass and the rate action.
nAct_a
INT
Actual controller value
nRTimeAdapt_a
INT
Proportional evaluation of the rate time in the actual value path
• Scaling: 16384 ≡ 100 % rate time ( C01053 )
• Internal limitation to 0 ... 16384 (0 ... 100 %)
bIOff
BOOL
Reset controller I component
TRUE The controller I component is reset.
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