Product description
9
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200116
BA-42840-02-V03
Water sampling station
EASYPRO COMPACT
Operating instructions
4.4 Design and function TOPAX
®
MC
4.4.1 Functional diagram
Fig. 2: Functional diagram of a two-channel controller
Gap
Field
Description
Sensors
1.
Free chlorine
2.
Disturbance
variable
3.
pH
1.
Measuring the free chlorine
2.
The disturbance variable is a variable flow volume which can be taken into account
3.
Measuring the pH value
Input modules
1.
Current module
2.
Digital 1
3.
Virtual 1
4.
pH Redox module
1.
Module for 4 – 20 mA signals and sensors with 24 V voltage supply
2.
Digital input for the external control of a function (here: external stop)
3.
Parameter calculated (here effective chlorine)
4.
Module for pH and Redox single-rod measuring cells
Control system
1.
Controller 1
2.
Controller 2
1.
Controlling the free chlorine inc. pH/temperature compensation and disturbance variable
2.
Controlling the pH value inc. temperature compensation
Output modules
1.
Module 1
2.
Module 2
1.
Module on slot 1 to connect an actor (here: MAGDOS LD)
2.
Module on slot 2 to connect an actor (here: MEMDOS LP)
Tab. 5: Explanation of functional diagram of a two-channel controller
Sensors
Input modules
Control
system
Output modules
Actors
free
chlorine
Disturbance
variable
On/Off
pH
Current
module
Digital 1
Virtual 1
(Effective chlorine)
pH Redox
module
Controller 1
Module 1
pH /
Temp
Distur-
bance
variable
Function
(External stop)
Controller 2
Temp
Module 2
Compensation
Compensation
