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The SCADA 3000 Analog Output Module is an optional component for use with the Sensaphone SCADA 3000 system. The module features four analog output signals that can be configured as 4-20mA, 0-20mA, or 0-10V. The outputs can be used to control equipment, drive digital dis-plays, or provide information to other computer devices. The individual outputs are capable of driving up to 1000 Ohms. They may be controlled automatically via a ladder program or C-program. The module also features a microprocessor watchdog circuit to maintain system reliability. LED indicators are provided to show system power and module operation via a blinking pulse LED.


HOW THE ANALOG OUTPUT MODULE WORKS:
The Analog Output Module has four independent outputs that can be used to control equipment, drive digital displays, or provide information to other computer devices. The only requirement is that the equipment be capable of accepting a 4-20mA, 0-20mA or 0-10V signal. The SCADA 3000 CPU sends information to the module telling it how much current or voltage to drive to each of the outputs. The output levels are determined based on the control program you create using the Ladder program, C-program or PID settings. The SCADA 3000 Software allows you to set up a custom table to scale the signal to units that describe your process. For example, say you are using an output to control the position of a valve. In this case 4mA may represent a valve that is 0% open and 20mA may equate to 100% open. By setting low and high table values of 0 and 100 respectively, you can now control the position of the valve from 0 to 100% as opposed to 4-20mA. This can greatly simplify programming as well as viewing the position of the valve from the software. For more information, see the SCADA 3000 CPU manual.