Analog Output Setup

The 9130 controller has the option of two analog outputs. The outputs are ranged for a 4 – 20 milliamp signal or a 0 – 20 milliamp signal. Each output comes with a factory default configuration dependent on the application. Each output can be modified prior to shipment to your facility or in the field by a supervisor.

 

 

Analog Output Terminals

Analog output 1 – terminals 24 and 25

Analog output 2 – terminals 25 and 26

 

Assignment

The analog output assignment can be modified depending on your system requirements. To change the Assignment first select which analog output you want to change by selecting it in the pull-down menu just below the main menu list.  Clicking on this value will display an input box, and then you can use the pull-down menu to select the desired parameter. Once selected, click OK and the displayed assignment under Value will be the current assignment type. The following is a list of the options:

PV 1 retrans        Input 1 retrans        

Loop 1 inc        Input 2 retrans        

Loop 1 dec        Input 3 retrans        

Loop 1 combo        SP1 retrans        

PV 2 retrans        Programmer ID num    

Loop 2 inc        Disabled        

Loop 2 dec        

Loop 2 combo            

Loop 3 inc        

Loop 3 dec        

Loop 3 combo        

            

Combo example for carbon :    

4 – 12 mA Air

12 – 20 mA Gas

 

Offset

This is the starting point, the Process Variable value at which you get 4 milliamps.  Clicking on this value will display an input box from which the user can select a new value.  The range is –32768 to 32767.

 

Range

This is a Process Variable value between 4 and 20 milliamps.  Clicking on this value will display an input box from which the user can select a new value.  The range is –32768 to 32767.

Note - The range, although not displayed with a decimal point, contains a decimal point that is dependent on the process variable selected. For example, if the offset is 20 mV for 4 mA, and you want 100 mV to be 20 mA, then your range should be 80. If the process variable is temperature, then the range will be 80, since temperature PVs do not have a decimal. If the PV is % Carbon, then the range will need to include the two decimal points for % Carbon. So, a range of 80 will be entered as 8000. See below for more examples.

 

Current Selection 

Provides the option of 4-20 mA or 0-20 mA control.  Clicking on this value will display an input box with a drop-down list from which the user can select either of the two values listed above.

 

Offset and Range when assigned to a control loop

Inc : 0 = 4mA, 100 = 20mA

Dec : 0 = 4mA, -100 = 20mA

 

Example: if 4 – 20 mA = 800 mV  - 1200 mV

    Offset  = 800 (starting point)

    Range = 400