Product Type: DeviceNet Adapter

Product Line: Flex I/O 1794

Part Number: 1794-ADN

Weight: 0.38 lbs (0.17 kg)

Mounting: DIN Rail or Panel Mounting

DeviceNet Cable: Belden YR-29832 or equivalent

Wire Size: 12 AWG stranded max., 3/64 inch (1.2 mm) insulation max.

Operating Temperature: 0 to 55 °C (32 to 131 °F)

Storage Temperature: –40 to 85 °C (–40 to 185 °F)

Vibration Resistance: 5 g @ 10–500 Hz (IEC 68-2-6)

Operating Shock: 30 g peak acceleration, 11 (+1) ms pulse width

Voltage: 24 VDC nominal

Input Voltage Range: 19.2 to 31.2 VDC

Flexbus Output Current: 640 mA max @ 5 VDC

Isolation Voltage: 50 V continuous

Power Consumption: 90 mA max

Power Dissipation: 7.6 W max @ 19.2 VDC

The 1794-ADN is a 24 VDC DeviceNet media adapter module.  It supports up to 8 Flex I/O modules and communication rates of 125 Kbps, 250 Kbps, and 500 Kbps.  The status indicators in the 1794-ADN allow the users to monitor the I/O and ModNet status.

The 1794-ADN has an open-type enclosure and supports DIN rail or panel mounting.  It also comes with One (1) DeviceNet port that uses an open 5-pin or 10-pin linear plug.  The entire 1794-ADN module measures 3.7 x 3.6 x 3.4 inches.  Its power ports use Category 1 wire, while the communication ports use Category 2 wire.

This adapter module has a power supply current load of 400 mA at 24 Volts, while its DeviceNet power rating is 24 Volts DC at 90 mA.  It has a nominal input voltage of 24 Volts DC and a maximum FlexBus output current of 640 mA at 5 Volts DC.  Its input voltage range is from 19.2 to 31.2 VDC and this includes the 5% AC ripple.  The 1794-AND module also has a maximum current draw of 400 mA at 24 VDC.  The DeviceNet module has a maximum power requirement of 24 Volts DC (+/- 4%) voltage at 90 mA.  The 1794-ADN has been type-tested at 1,930 Volts DC for 60 seconds, and it has a continuous isolation voltage of 50 Volts.  Its maximum power dissipation is 7.6 W at 19.2 Volts DC and its thermal dissipation is 26 BTU/hour at 19.2 Volts DC.  Its operating temperature range is -4 to 158 degrees Fahrenheit while its storage temperature range is -40 to 185 degrees Fahrenheit.  The 1794-ADN comes with a vibration rating of 5 g at 10 to 500 Hertz, an operating shock rating of 30 g, and a non-operating shock rating of 50 g.

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