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DIF16 Discrete Input Field Terminator
Overview
The DIF16 board contains 16 optically coupled discrete inputs.
Each input termination of the DIF16 board is completely transient protected and optically coupled to isolate surge currents and voltages from entering the main circuit board. The DIF16 board provides R/C filtering and logic level conversion components to convert noisy input signals into clean logic levels which the processor can read without error.
The DIF16 board has protection ground and field sourcing voltage terminal blocks. Proper fusing is also provided to protect the circuit. Each channel has an LED which turns on when an input field contact has been generated. Two power indicating LEDs are also included. They are lit when power has been applied to the board.
The DIF16 board connects to our Micro Expander Bus (MEB) board through a 16 pin ribbon cable.
Specifications
| Mechanical | |
|---|---|
| Size: | 3" x 9" PC board |
| Mounting: | Snap track |
| Power requirements | 275 mA with all inputs active |
| Isolation | 1500 VDC |
| Transient protection | 15 Ohm series resistance with 170 V transorb |
| Filtering | R/C 10 mS typical |
