Specifications - 1794-OW8 Relay Output ModuleOutputs per Module: 1 group of 8 Form A isolated (normally open) electromechanical relaysModule Location:Mounts on 1794-TB2, -TB3, -TB3S, -TBN and -TBNF Terminal Base Units.When using 1794-TBNF terminal base unit, use 3.0A, 250V ac slow-blow fuses (Littelfuse pt. no. 239003)Off-State Leakage Current (max at 240V ac): 1.0mA thru snubber circuitMinimum Contact Load: 100?A at 100mV dcOutput Voltage Range (load dependent):5-30V dc @ 2.0A resistive48V dc @ 0.5A resistive125V dc @ 0.25A resistive125V ac @ 2.0A resistive240V ac @ 2.0A resistiveIf used in European Zone 2 potentially explosive atmospheres, voltages must be at or below 60V ac or 75V dc.Output Current Rating (at rated power):Resistive2A @ 5-30V dc0.5A @ 48V dc0.25 @ 125V dc2A @ 125V ac2A @ 240V acInductive2.0A steady state @ 5-30V dc, L/R = 7ms0.5A steady state @ 48V dc, L/R = 7ms0.25A steady state @ 125V dc, L/R = 7 ms2.0A steady state, 15A make @ 125V ac, PF = cos = 0.42.0A steady state, 15A make @ 240V ac, PF = cos = 0.4Power Rating (steady state):250W max. for 125V ac resistive output480W max. for 240V ac resistive output60W max. for 30V dc resistive output24W max. for 48C dc resistive output31W max. for 125V dc resistive output250VA max. 125V ac inductive output280VA max. for 240V ac inductive output60VA max. for 30V dc inductive output24VA max. for 48V dc inductive output31VA max. for 125V dc inductive outputOutput Signal Delay: OFF to ON: 10ms maximum (time from valid output on signal to relay energization by module) ON to OFF: 10ms maximum (time from valid output off signal to relay deenergization by module)Initial Contact Resistance: 30m Switching Frequency: 1 operation/3s (0.3Hz at rated load) maxBounce Time: 1.2ms (mean)Expected Life of Electrical Contacts: Minimum 100,000 operations @ rated loadsFlexbus Current: 69mA maximumPower Dissipation: 5.5WThermal Dissipation: 18.8 BTU/hr maximumIsolation Voltage: Between any 2 sets of contacts: 2550V dc for 1s Customer load to logic: 2550V dc for 1s Customer load to 24V dc supply: 2550V dc for 1s Customer 24V dc supply to logic: 850V dc for 1sFusing: Fusing of outputs is recommended. Use 3.0A, 250V ac slow-blow fuses (Littelfuse pt. no. 239003)Indicators: 8 yellow status indicators - show status of individual outputs. If relay output bit is on, corresponding output indicator is on.Keyswitch position: 9Terminal Screw Torque: 7 pound-inches (0.8Nm); NEMA 1794-TBN, -TBNF: 9 pound-inches (1.02Nm)Dimensions (with module installed): 3.7H x 3.7W x 2.7D inches (94H x 94W x 69D mm)
