Technical Specifications of 1756-IG16 Module

Input Configuration

• Inputs: 16 (8 points per group)
• Voltage category: 5V DC TTL source (Low=True)(1)
• Note: TTL inputs are inverted. Use a NOT instruction to convert to traditional True-High logic.

Voltage and Current Ratings

• Operating voltage range: 4.5…5.5V DC
• Ripple: 50 mV P-P max
• Current draw @ 5.1V: 110 mA
• Current draw @ 24V: 2 mA
• Total backplane power: 0.61 W

Input Voltage States

• -0.2…+0.8V: Guaranteed on-state
• 0.8…2.0V: State not guaranteed
• 2.0…5.5V: Guaranteed off-state

Input Delay Time

• Off to On (5V to 0V transition): 270 µs nominal / 450 µs max + filter time
• On to Off (0V to 5V transition): 390 µs nominal / 700 µs max + filter time
• User-selectable filter times: 0 ms, 1 ms, 2 ms, 9 ms, 18 ms

Power and Thermal Dissipation

• Power dissipation: 1.4 W max @ 60 °C (140 °F)
• Thermal dissipation: 4.8 BTU/hr @ 60 °C (140 °F)

Electrical Characteristics

• Off-state voltage, max: 2V
• Off-state current, max: 4.1 mA
• Input impedance: 1.4 kΩ min, 1.5 kΩ typical
• Input current: 3.7 mA nominal @ 5V DC, 4.1 mA max @ 5V DC

Update and Timestamp

• Cyclic update time: 200 µs…750 ms
• Change of state: Software configurable
• Timestamp accuracy: ±200 µs

Isolation and Protection

• Isolation voltage: 250V continuous, inputs-to-backplane and group-to-group
• No isolation between individual group inputs
• Reverse polarity protection: No

Module Keying and Terminal Blocks

• Module keying: Electronic, software configurable
• Removable terminal blocks: 1756-TBNH, 1756-TBSH
• RTB keying: User-defined mechanical

Physical and Environmental Specifications

• Slot width: 1
• Wire category: 2(2)
• Enclosure type: None (open-style)
• Temperature code: T4
• Max surrounding air temperature: 60 °C (140 °F)
• Relative humidity: 5…95% noncondensing
• Vibration: 2 g @ 10…500 Hz
• Shock (operating): 30 g
• Shock (nonoperating): 50 g

Immunity and Emissions

• Emissions: IEC 61000-6-4
• ESD immunity: 6 kV contact, 8 kV air discharges (IEC 61000-4-2)