DNR-DIO-432-800 United Electronic Industries 32-Channel Current Sinking (600mA) Digital Output Board w/Current Monitoring + Low Leakage Current

The United Electronic Industries DNx-DIO-432-800 Series 32-Channel Current Sinking (600mA) Digital Output Boards w/Current Monitoring + Low Leakage Current is designed for use in a wide variety of applications. Each channel is configured as a current sink and switches voltages between 3.3 and 36 VDC. Each channel is rated for continuous operation at 600 mA with an output voltage of less than 550 mV.

The DNx-DIO-432-800 is part of UEI's Guardian series. It not only controls the digital outputs, it provides a unique output monitoring capability. An on-board 24-bit A/D converter monitors each channel's output current. This allows the application to detect and flag short and open circuits as well as other "suspicious" behavior. The monitoring capability is also powerful diagnostic tool allowing a repair technician to quickly and accurately identify blown or miswired channels.

One of the important features of the DNx-DIO-432-800 is the board's extremely low leakage current in the OFF state. With less than 1 microamp of leakage current, the board is an ideal alternative to applications which had previously relied upon electromechanical contacts.

The Guardian advantage provides programmable overcurrent protection. The user may select the current and duration of overload (as short as 10 mS) required before the channel is shut down. Each board provides 350 Vrms isolation between the I/O, the cube and other installed I/O layers. The DNx-DIO-432-800 offers update rates up to 1 kHz and simplifies software writes by transferring all data in a single, 32-bit word.

Each channel offers a pulse-width-modulated (PWM) "soft-start/stop" capability. This allows power to be applied/removed gradually, greatly increasing the reliability of devices like incandescent bulbs where thermal shock reduces life expectancy. The PWM may also be configured to provide a steady state output at less than 100% allowing the unit to function as a programmable "dimmer".