Hach-Lange RTC112 SD-Module - Manual (Page 31)

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Parameterization and operation
4.7.8 P GAIN TSS
Proportional gain for the PID closed-loop controller for the TSS
concentration in the dewatered sludge.
Note: P GAIN TSS [L/g] is divided by 100 before it is multiplied by the
deviation of the actual TSS concentration from the required TSS
setpoint.
4.7.9 INTEGRAL TIME TSS
Integral time for the PID closed-loop controller for the TSS
concentration in the dewatered sludge.
Note: INTEGRAL TIME TSS is set to "0" to deactivate the integral part of
the PI open-loop controller.
4.7.10 DERIVATIVE TIME TSS
Derivative time for the PID closed-loop controller for the TSS
concentration in the dewatered sludge.
4.7.11 SET-POINT FILT
Required setpoint of the TSS concentration in the centrate/filtrate.
Note: This parameter is only considered if CLOSED-LOOP FILTRATE
CONTROL is activated.
4.7.12 P GAIN FILT
Proportional gain for the PID closed-loop controller for the TSS
concentration in the centrate/filtrate.
Note: This parameter is only considered if CLOSED-LOOP EFFLUENT
CONTROL is activated.
P GAIN FILT [L/g] is divided by 100 before it is multiplied by the deviation
of the actual TSS concentration from the required TSS setpoint.
4.7.13 INTEGRAL TIME FILT
Integral time for the PID closed-loop controller for the TSS
concentration in the centrate/filtrate.
Note: This parameter is only considered if CLOSED-LOOP EFFLUENT
CONTROL is activated.
INTEGRAL TIME TSS is set to "0" to deactivate the integral part of the
PID open-loop controller.
4.7.14 DERIVATIVE TIME FILT
Derivative time for the PID closed-loop controller for the TSS
concentration in the centrate/filtrate.
Note: This parameter is only considered if CLOSED-LOOP FILTRATE
CONTROL is activated.
4.8 INPUT/OUTPUT LIMITS
4.8.1 FEED FLOW LOW
Feed flow rate input signals below this value [m 3 /h] are set to this
value. This means that very low feed flow rates can be avoided.