AB 1756-IA16I
AB 1756-IA16I
AB 1756-IA16I
AB 1756-IA16I
AB 1756-IA16I
AB 1756-IA16I
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1756-IA16I

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Allen-Bradley 1756-IA16I is a 16-point individually isolated 120 V AC digital input module for ControlLogix chassis systems.
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Technical specifications for 1756-IA16I

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-IA16I
  • Product Family:
    ControlLogix
  • Product Type:
    Isolated AC Digital Input Module
  • Stock:
    1
  • Inputs:
    16 individually isolated
  • Voltage category:
    120 V AC, 50/60 Hz
  • Operating voltage range:
    79-132 V AC, 47-63 Hz
  • Off-to-on delay:
    10 ms maximum plus 1 or 2 ms selectable filter
  • On-to-off delay:
    8 ms maximum plus 9 or 18 ms selectable filter
  • Current draw at 5.1 V:
    125 mA
  • Current draw at 24 V:
    3 mA
  • Total backplane power:
    0.71 W
  • Power dissipation:
    4.9 W maximum at 60 °C
  • Off-state voltage / current:
    20 V maximum / 2.5 mA maximum
  • On-state current:
    5 mA minimum at 79 V AC; 15 mA maximum at 132 V AC
  • Cyclic update time:
    200 µs to 750 ms
  • Input timestamp:
    ±200 µs
  • Isolation voltage:
    125 V continuous, input-to-backplane and input-to-input
  • RTB housings:
    1756-TBCH or 1756-TBS6H, ordered separately
  • Slot width / enclosure:
    1 slot / open-style
  • Dimensions:
    3.46 × 14.45 × 14.69 cm
  • Weight:
    0.2 kg
  • 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 Wiring Timing Commissioning Application
  • Receives sixteen individually isolated 120 V AC field inputs
  • Provides selectable input filters, change-of-state reporting, and timestamp support
  • Uses a separately ordered 36-position ControlLogix removable terminal block housing

1756-IA16I is an Allen-Bradley isolated ac digital input module used in ControlLogix control systems.

The module brings isolated AC switch, relay, and auxiliary-contact states into a ControlLogix project while limiting channel-to-channel ground interaction.

Before installation or replacement, verify Series A, 79-132 V AC field power, frequency, per-channel L2 wiring, RTB type, input filters, electronic keying, timestamp and change-of-state settings, chassis slot, and project configuration.

Availability, condition, price, and shipping time for 1756-IA16I are confirmed during quotation.

Allen-Bradley 1756-IA16I Isolated AC Digital 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.

  • Each channel has an individually isolated AC input circuit
  • The documented operating range is 79-132 V AC at 47-63 Hz
  • 1756-TBCH or 1756-TBS6H RTB hardware is ordered separately
  • Off-to-on filtering can be set to 1 or 2 milliseconds
  • On-to-off filtering can be set to 9 or 18 milliseconds
  • Cyclic update and change-of-state behavior are configured in the controller project
  • Electronic keying must match the intended compatibility policy
  • Timestamp and change-of-state settings should be validated against the task design
  • Channel wiring and field voltage must be tested before enabling production logic
  • Monitoring 120 V AC limit switches and auxiliary contacts
  • Isolated status acquisition from motor-control and power-distribution equipment
  • ControlLogix digital input expansion where channel-to-channel isolation is required
Description
1756-IA16I is an Allen-Bradley isolated ac digital input module for the ControlLogix platform.

It accepts sixteen individually isolated 79-132 V AC inputs, provides selectable input filtering, change-of-state reporting, and input timestamping, and communicates with the controller through the ControlLogix backplane.

Before installation or replacement, confirm Series A, 79-132 V AC field power, frequency, per-channel L2 wiring, RTB type, input filters, electronic keying, timestamp and change-of-state settings, chassis slot, and project configuration.
Revisions

Revision Part #

Also known as

1756-IA16I Ser A
1756-IA16I/A, Series A, Rev A
Alternative Names
1756-IA16I 1756 IA16I 1756IA16I Allen-Bradley 1756-IA16I AB 1756-IA16I ControlLogix 1756-IA16I
Technical notes
Allen-Bradley 1756-IA16I requires Series A compatibility, 79-132 V AC field signals, correct per-channel isolated wiring, a 1756-TBCH or 1756-TBS6H RTB, and validated filter, keying, timestamp, and change-of-state settings.
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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.
Is the terminal block included with Allen-Bradley 1756-IA16I?
Do not assume it is included. Rockwell Automation specifies 1756-TBCH or 1756-TBS6H RTB housings, and the quoted stock description must state whether the RTB is supplied.
Can Allen-Bradley 1756-IA16I accept DC input signals?
No DC operating range is specified for this model. Use it for the documented 79-132 V AC, 47-63 Hz signals and select another module for DC applications.
What does individually isolated mean on Allen-Bradley 1756-IA16I?
Each input is isolated from the other inputs and the backplane, which supports separate field references but does not remove the need for correct per-channel L2 wiring and safety practices.
How should input filtering be chosen on Allen-Bradley 1756-IA16I?
Choose filter values that reject contact bounce or AC noise without delaying the machine sequence beyond its allowed response time, then test the complete field circuit.
Can Allen-Bradley 1756-IA16I replace a grouped-input module without rewiring?
Not automatically. The individually isolated terminal arrangement, RTB, field commons, voltage range, keying, and project configuration must all be compared before conversion.
What should be checked when an Allen-Bradley 1756-IA16I point stays on?
Measure field voltage and leakage current, inspect the input device and L2 return, confirm the configured filter, and verify that off-state limits are not being exceeded.
What should be recorded before replacing Allen-Bradley 1756-IA16I?
Save the Series, firmware/AOP context, chassis slot, electronic keying, RTB and terminal map, field voltage, filters, timestamp and change-of-state settings, and project backup.