Technical Specifications - 1756-OB16E

General Attributes

• Outputs: 16 electronically fused (8 points/group)
• Voltage Category: 12/24V DC source
• Operating Voltage Range: 10…31.2V DC

Output Delay Time

• Off to On: 70 μs nominal / 1 ms max
• On to Off: 360 μs nominal / 1 ms max

Current and Power

• Current Draw @ 5.1V: 250 mA
• Current Draw @ 24V: 2 mA
• Total Backplane Power: 1.32 W
• Power Dissipation, Max: 4.1 W @ 60 °C (140 °F)
• Thermal Dissipation: 13.98 BTU/hr

Current Specifications

• Off-state Leakage Current, Max: 1 mA per point
• On-state Voltage Drop, Max: 400 mV DC @ 1 A
• Current per Point, Max: 1 A @ 60 °C (140 °F)
• Current per Module, Max: 8 A @ 60 °C (140 °F)
• Surge Current per Point, Typical: 2 A for 10 ms per point, repeatable every 2 s @ 0 °C (32 °F) @ 24V DC
• Load Current, Min: 3 mA per point

Synchronization and States

• Scheduled Outputs: Synchronization within 16.7 ms max, reference to the Coordinated System Time
• States in Fault Mode per Point: Hold last state, On or Off (Off is default)
• States in Program Mode per Point: Hold last state, On or Off (Off is default)

Isolation and Fusing

• Isolation Voltage: 250V (continuous), basic insulation type, outputs-to-backplane, and output group-to-group
  • No isolation between individual group outputs
  • Routine tested @ 1350V AC for 2 s
• Fusing: Electronically fused per group

Physical Specifications

• Removable Terminal Block: 1756-TBNH, 1756-TBSH
• RTB Keying: User-defined mechanical
• Slot Width: 1
• Wire Category: 1
• Weight, Approx: 1.76 g (0.06 oz)

Environmental Specifications

• Operating Temperature: 0…60 °C (32…140 °F)
  • IEC 60068-2-1 (Test Ad, Operating Cold)
  • IEC 60068-2-2 (Test Bd, Operating Dry Heat)
  • IEC 60068-2-14 (Test Nb, Operating Thermal Shock)
• Surrounding Air Temperature, Max: 60 °C (140 °F)
• Nonoperating Temperature: -40…+85 °C (-40…+185 °F)
  • IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold)
  • IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat)
  • IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock)
• Relative Humidity: 5…95% non-condensing (IEC 60068-2-30, Test Db, Unpackaged Damp Heat)
• Vibration: 2 g @ 10…500 Hz (IEC 60068-2-6, Test Fc, Operating)
• Shock, Operating: 30 g (IEC 60068-2-27, Test Ea, Unpackaged Shock)
• Shock, Nonoperating: 50 g (IEC 60068-2-27, Test Ea, Unpackaged Shock)

Emissions and Immunity

• Emissions: CISPR 11, Class A
• ESD Immunity: IEC 61000-4-2, 6 kV contact discharges, 8 kV air discharges
• Radiated RF Immunity:
  • IEC 61000-4-3:
    • 10V/m with 1 kHz sine-wave 80% AM from 80…2000 MHz
    • 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz
    • 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz
    • 3V/m with 1 kHz sine-wave 80% AM from 2000…2700 MHz
• EFT/B Immunity: ±4 kV @ 5 kHz on signal ports (IEC 61000-4-4)
• Surge Transient Immunity: ±1 kV line-line (DM) and ±2 kV line-earth (CM) on signal ports (IEC 61000-4-5)
• Conducted RF Immunity: 10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz (IEC 61000-4-6)
• Oscillatory Surge Withstand: 3 kV (IEEE C37.90.1)

Temperature Codes and Safety

• North American Temperature Code: T4
• IEC Temperature Code: T4
• Enclosure Type Rating: None (open-style)

These specifications provide a comprehensive overview of the 1756-OB16E module, detailing its power requirements, environmental tolerances, current specifications, and safety ratings.