Hach sc1000 user manual System setup menu, Advanced Operations, Output setup menu

Advanced Operations

6.3 System setup menu

The system setup menu contains the main configuration settings for the sc1000 controller.

The system setup menu can include following items:

•OUTPUT SETUP

•CURRENT INPUTS

•RELAY

•NETWORK MODULES

•GSM-MODULE

•DEVICE MANAGEMENT

•DISPLAY SETTINGS

•BROWSER ACCESS

•STORAGE CARD

•SECURITY SETUP

The availability of the menu items depends on the installed internal plug-in expansion cards or external DIN rail modules.

6.3.1 Output setup menu

Note: This menu appears only if an output card is installed in the sc1000 controller.

The content of the output setup menu depends on the selected use/working mode: Linear/Control or PID Control. The current output card can be used with the output current linearly dependent to a process value or with the output current working as a PID controller.

LINEAR CONTROL

In this working mode the output current is linearly dependent to a process value after it has been processed by the internal formula parser (if prompted).

PID CONTROL

In this working mode the current output module generates a current output which tries to control the process value. The PID controller controls the process value to be equal to the set point when a disturbance changes the value of the process value or a new set point is set.

The output current can be in a working range of 0–20 mA or 4–20 mA. The highest output current is 22 mA. If necessary adjust the output current with an offset and a correction factor to enhance the accuracy. By default these two parameters are set to “0” (offset) and “1” (correction factor).

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