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1756-IV16

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Allen-Bradley 1756-IV16 is a 16-point 12/24 V DC sourcing input module with two eight-point input groups for ControlLogix chassis.
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Technical specifications for 1756-IV16

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-IV16
  • Product Family:
    ControlLogix
  • Product Type:
    16-Point 12/24 V DC Sourcing Input Module
  • Stock:
    1
  • Input type:
    12/24 V DC sourcing
  • Input points:
    16
  • Nominal input voltage:
    24 V DC
  • Operating voltage range:
    10–30 V DC
  • Input grouping:
    16 inputs, 8 points per group
  • Input delay, Off to On:
    280 µs nominal / 1 ms maximum plus selectable 0 ms, 1 ms, or 2 ms filter
  • Input delay, On to Off:
    540 µs nominal / 2 ms maximum plus selectable 0 ms, 1 ms, 2 ms, 9 ms, or 18 ms filter
  • Current draw at 5.1 V:
    110 mA
  • Current draw at 24 V:
    2 mA
  • Total backplane power:
    0.61 W
  • Maximum power dissipation:
    5.41 W at 60 °C
  • Thermal dissipation:
    18.47 BTU/hr
  • Off-state voltage:
    5 V DC maximum
  • Off-state current:
    1.5 mA maximum
  • On-state current:
    2 mA minimum at 10 V DC; 10 mA maximum at 30 V DC
  • Input impedance:
    3.2 kΩ maximum at 30 V DC
  • Cyclic update time:
    200 µs to 750 ms
  • Input time stamp:
    ±200 µs
  • Isolation voltage:
    250 V continuous, basic insulation; inputs-to-backplane and input group-to-group; no isolation between individual inputs in a group
  • Removable terminal block housing:
    1756-TBNH or 1756-TBSH
  • Dimensions:
    3.48 × 14.52 × 13.18 cm
  • Tariff Code:
    8538900000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Field Signal Wiring Isolation & Groups Project Checkout Application
  • Sixteen 12/24 V DC sourcing input points for ControlLogix field circuits
  • 10–30 V DC operating range must match the installed field supply
  • Replacement depends on point wiring, RTB selection and project mapping

1756-IV16 is an Allen-Bradley ControlLogix module for reading sixteen 12/24 V DC sourcing input signals.

Its field-side wiring must be evaluated as a complete circuit: device polarity, common, supply and the removable terminal block all affect whether a channel is recognized.

For a replacement, retain the controller project and panel wire identification, then prove each input with the field circuit connected.

Availability, condition, price, and shipping time for 1756-IV16 are confirmed during quotation.

Allen-Bradley 1756-IV16 DC Sourcing Input Module Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Wire 1756-IV16 only to compatible sourcing-input field circuits
  • Confirm the 10–30 V DC signal at the module terminal, not only at the device
  • Identify commons and field returns before moving an RTB to a replacement module
  • Use the published 250 V continuous group-to-backplane isolation rating in the cabinet design
  • Keep field circuits separated according to the approved wiring drawing
  • Investigate commoning or grounding changes before reconnecting a faulted input group
  • Compare every physical input channel with the ControlLogix I/O tree
  • Check terminal seating before diagnosing a missing input point
  • Prove field-device state and controller diagnostics together after replacement
  • ControlLogix machine panels that monitor 24 V DC sensors
  • Discrete status acquisition from compatible sourcing field devices
  • Published 1771-to-ControlLogix I/O conversion projects using the documented conversion system
Description
1756-IV16 is an Allen-Bradley ControlLogix digital input module with sixteen 12/24 V DC sourcing input points.

The module is used where a ControlLogix chassis must read separately wired DC field signals. Its input wiring, field supply, removable terminal block and controller project must be checked together.

Before replacement, record the installed terminal-block type, channel wiring and the ControlLogix project configuration; do not treat a matching connector as proof of electrical compatibility.
Revisions

Revision Part #

Also known as

1756-IV16 Ser A
1756-IV16/A, Series A, Rev A
Alternative Names
1756-IV16 1756 IV16 Allen-Bradley 1756-IV16 AB 1756-IV16 Allen Bradley 1756-IV16
Technical notes
1756-IV16 requires compatible 12/24 V DC sourcing field wiring and a verified ControlLogix terminal block; confirm the project I/O mapping before service.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can 1756-IV16 accept a dry contact as an input?
1756-IV16 is a sourcing-input module, so the field circuit must provide the compatible return/sourcing arrangement and a valid 10–30 V DC input signal. Confirm the wiring diagram and field-device polarity before energizing the point.
What should be recorded before replacing a 1756-IV16?
Record the terminal-block catalog number, point wiring, field voltage, channel status in the ControlLogix project, and any interposing relays or suppressors. The module alone does not preserve the panel wiring record.
Why can a 1756-IV16 point remain off when 24 V DC is measured in the panel?
Check input polarity, the point common, terminal seating, field return and the controller project diagnostics. Voltage measured at a panel terminal does not establish the required signal path at the input channel.
Can 1756-IV16 replace a different 1756 digital-input catalog number directly?
Not automatically. Compare point count, input voltage, sinking/sourcing field-device arrangement, group isolation and the installed terminal block against the exact replacement requirement.
Does 1756-IV16 include the removable terminal block?
Treat the terminal block as a separately verified item unless the quotation lists it. Confirm the correct ControlLogix RTB before ordering.
How should 1756-IV16 wiring be checked after a cabinet move?
Verify every channel against the project I/O list, then test inputs with the field supply and final machine wiring in place. Re-check shields, commons and labels disturbed by the move.
Can 1756-IV16 be used in a 1771 I/O conversion?
Rockwell documents specific 1771-to-1756 conversion systems for particular I/O combinations. Use the published conversion material and required conversion accessories; do not assume direct terminal compatibility.