Cecomp Electronics, APD 3393, IsoSplitter® Signal Splitter, 1 Potentiometer Input to 2 DC Output, 85-265 VAC, 60-300 VDC Power

Features:

• One Input to Two Outputs with Full Isolation
• Zero and Span for Each Output
• Full 1200 V Input/Output /Power Isolation
• Input and Output LoopTracker® LEDs
• Output Test Button for Each Channel
• Built-In Loop Power Supplies for Sink/Source I/O

Applications:

• Split, Convert, Boost, and Rescale Process Signals
• Split Process Signals for Control and Validation
• Interface a Process Signal with Multiple Panel Meters, PLCs, Recorders, Data Acq., DCS, & SCADA Systems

The APD 3393 IsoSplitter accepts a potentiometer input and provides two optically isolated DC voltage or current outputs that are linearly related to the input. The input range and each output range are independent and can be specified as required. This provides an economical solution when one signal must be sent to two different devices.

Typical applications include isolation, output splitting, output device separation and redundancy (i.e. to prevent failure of the entire loop if one device fails), or a combination of these.

The voltage drop across a stable 1 VDC excitation source is measured allowing any full-range 3-wire potentiometer to be used.

The input signal is filtered, amplified, split, and then passed through an opto-coupler to the output stages. Full 4-way isolation (input, output 1, output 2, power) make this module useful for ground loop elimination, common mode signal rejection, and noise pickup reduction.

I/O Sink/Source Versatility

Standard on the APD 3393 are 20 VDC loop excitation supplies for each output channel. These power supplies can be selectively wired for sinking or sourcing allowing use with any combination of powered or unpowered milliamp I/O devices.

LoopTracker

API exclusive features include three LoopTracker LEDs (green for input, red for each output) that vary in intensity with changes in the process input and output signals. These provide a quick visual picture of your process loop at all times and can greatly aid in saving time during initial startup and troubleshooting.

Output Test

An API exclusive feature includes output test buttons for each channel to provide a fixed output (independent of the input) when held depressed. A test button is provide for each output channel. The output test greatly aids in saving time during initial startup and/or troubleshooting.

The test output level for each channel is potentiometer adjustable from 0 to 100% of the output span. Terminals are provided to operate the test functions remotely for each channel. This also allows use as a remote manual override to provide a temporary fixed output if desired.