Hach-Lange RTC103 N-Module - Manual (Page 38)

38
Parameterization and operation
MODEL CORRECTION FACT.
This factor can be used on order to fine tune the DO concentration
calculated by the model (feed forward part of the N-RTC).
SUBSTIT. DO FOR MODEL
If there is a failure in any of the input signals (NH4-N, TSS, Flow) the
N-RTC will apply the this DO feed forward set point for all further
calculation
[mg/L]
NH4-N SETPOINT Desired set point of the NH4-N concentration effluent aeration [mg/L]
P FACT NH4
Note: These settings are only necessary if NH
4
-N measurement in
effluent for feed back control is available!
Proportional factor for the PID closed loop controller for the NH4-N
concentration effluent aeration.
[1/mg/L]
INTEGRAL TIME NH4
Note: These settings are only necessary if NH
4
-N measurement in
effluent for feed back control is available!
Integral time for the PID closed loop controller for the NH4-N
concentration in the thickened sludge.
Note: INTEGRAL TIME NH4 is set to “0” to deactivate the integral
part of the PID controller.
[min]
DERIVATIVE TIME NH4
Note: These settings are only necessary if NH
4
-N measurement in
effluent for feed back control is available!
Derivation time for the PID closed loop controller for the NH
4
-N
concentration effluent aeration
Note: DERIVATIVE TIME NH4 is set to “0” to deactivate the
derivative part of the PID controller.
[min]
LIMITS
MIN DO
If a calculated DO set point is lower than the MIN DO value, the DO
set point is set to that value
[mg/L]
MAX DO
If a calculated DO set point is higher than the MIN DO value, the DO
set point is set to that value
[mg/L]
SMOOTHING Smoothing on the calculated DO set point [min]
DO CONTROL
CHANNEL 1
DERIVATIVE TIME Derivative Time of DO controller [min]
DAMPING Damping of DO control [min]
SUBST AERATION
If the DO sensor (e.g. LDO) signals a fault, the set aeration stage is
selected
[Stage]
NO. OF STAGES Number of controlled aeration stages (maximun 6) [Stage]
VFD P MIN fixed to 100% [%]
CHANNEL 2 same as CHANNEL 1
4.5.2 2-Channel RTC103 N-Module Stages (Continued)
RTC MODULES / PROGNOSYS
RTC MODULES
RTC