Features

·     Two wire interface

·     Soft-I/O supports standard voltage outputs including +/- 5V, +/- 10V and -10 to 24V

·     Soft-I/O supports standard current outputs including 4--20mA and 0--20mA

·     You select the engineering units and scaling factors

·     Configurable input filter to assure the right balance between responsiveness and stability

·     Flexible pin assignments

·     Non-volatile saving of settings

·     Flexible tags for remote control

To hook up an analog actuator, you merely wire it up to the Soft-I/O module and configure the signal levels in voltage or current.  For example, if you have a pneumatic valve that will produce a pressure proportional to the current you supply (called an I/P), you hook up the I/P to two pins of the Soft-I/O module.  You then configure the Soft-I/O Versatile Analog Current Output Soft-Device to produce a 4--20mA signal on its pins.

Technical Specifications

Each Versatile Analog Output Soft-Device will produce an analog voltage or current signal on any pin.  If you hook up an I/P, for example, you can either provide the loop power or expect that the device will provide loop power.  Generally, actuators expect that the controller (i.e. Soft-I/O) will provide the power.  So, the actuator data sheet will say that it is "loop powered".  Soft-I/O can be configured to supply the power.  If your actuator expects a voltage, simply configured Soft-I/O to produce that voltage.  Then, the Versatile Analog Output Soft-Device can respond to an internal means, such as a Soft-I/O control loop or a host controller talking to Soft-I/O over its Ethernet interface.  It's up to you!