Description

The 1794-OW8 is an I/O relay module that was produced by Allen-Bradley / Rockwell Automation. This module can be used to implement distributed input/output applications. For this purpose, it can be paired with any 1794 Flex IO adapter. The power dissipation rating of this module is 5.5 watts, and the thermal dissipation rating is 18.8 BTU/hr. The physical dimensions of this device measure 3.7 inches by 3.7 inches by 2.7 inches.

• Vibration: 5g @ 10 to 500 Hz
• Operating Temperature: 0 to 55 C (32 to 131 F)
• Wire Size: Determined by installed terminal base
• Mounting: DIN Rail
• Enclosure Open-type
• Keyswitch position 9
• Indicators: 8 Yellow status indicators
• Pilot Duty Rating R150, 5…30V DC, 28V A not to exceed 1 A below 28V DC
• Relay Contact rating: 250V AC, 2 A, 50/60Hz, Resistive; 120/240V AC,
• 50/60Hz,1800V A Make, 180V A Break; 5…30V DC, 2 A, Resistive;
• Supply Voltage: 24V DC, 125 mA
• Terminal base: 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN and 1794- TBNF
• Number of Outputs: Eight, isolated
• Product Description: Flex IO relay Output Module
• Storage Temperature: -40 to 85 C (-40 to 185 F)
• Part Number/Catalog: No. 1794-OW8
• Minimum Contact Load: 100 μA @ 100 mV DC
• Flexbus Current: 5V DC, 35 mA
• Operating Shock: 30 g
• Product Type: Flex I/O Relay Output Module
• Outputs: 8 Relay
• Off-state Leakage Current: 1.0mA through Snubber Circuit
• Relay Contact: 250 Volts AC
• Initial Contact Resistance: 30 m
• Bounce Time: 1.2 milliseconds
• Switching Frequency: 1 operation/3 s (0.3Hz at rated load) max
• Power Dissipation: 5.5 Watts
• Thermal Dissipation: 18.8 BTU/hour at maximum

Part number 1794-OW8 is an input / output relay module that was designed and manufactured by Allen-Bradley / Rockwell Automation. It is ideal for any type of industrial application. This module is compatible with the following terminal bases: the 1794-TB3, the 1794-TB2, the 1794-TB3S, the 1794-TBNF, and the 1794-TBN. This module can be used to implement distributed Input / Output applications using any 1794 Flex IO adapter. This module has one (1) group of the eight (8) form A isolated electromechanical relays output. This module has an off-state leakage current of one (1) milliampere which is through a snubber circuit.

It has a power dissipation rate of 5.5 watts. Additionally, the thermal dissipation rating on this module is 18.8 BTU/hr. The initial contact resistance on this relay module is thirty (30) mΩ. This module has eight (8) yellow indicators and nine (9) key-switch positions with 0.8 Nm terminal screw torque. The 1974-OW8 module is reliable with a switching frequency of 0.3 hertz at rated load and bounces time of approximately 1.2 milliseconds. It has a flex-bus current of sixty-nine (69) milliamperes and the expected life of the module is 100,000 operations minimum at rated load.

The dimension of the module is 3.7 inches x 3.7 inches x 2.7 inches (height x width x depth). This product has an optimal storage temperature range of -40 to 185 degrees Fahrenheit. Additionally, the optimal operating temperature range of this module is 32 to 131 degrees Fahrenheit. The relative humidity rating of this device 5 to 95% non-condensing.