Allen-Bradley 1756-IF16H
ControlLogix 16 Point HART Analog Input Module
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Allen-Bradley 1756-IF16H ControlLogix HART analog input module: sixteen differential current inputs, 0 to 20 mA or 4 to 20 mA, a HART modem per channel.
- Manufacturer
- Allen-Bradley
- Manufacturer part no.
- 1756-IF16H
- Product family
- ControlLogix I/O Modules (1756)
- Type
- Analog input module
- Category
- PLCs and I/O › Analogue I/O modules
- Lifecycle
- Active
- OEM successor
- Not stated
- Technical datasheet
- Data sheet
Technical specifications
- Manufacturer
- Allen-Bradley
- Manufacturer part no.
- 1756-IF16H
- Type
- Analog input module
- Application
- I/O module
- Used with
- ControlLogix 1756 chassis
- Inputs
- Sixteen differential, current, Dedicated HART modem per channel
- Input range
- 0…20 mA 4…20 mA
- Resolution
- 16…21 bits
- Voltage and current ratings
- Backplane: 5.1V DC @ 200 mA, 24V DC @ 125 mA, Input current range: 0…20 mA, 4…20 mA
- Total backplane power
- 4.02 W
- Power dissipation, max
- 6 W
- Isolation voltage
- 50V (continuous), Basic insulation type, Input Channels to Backplane, No isolation between individual Input Channels
- Thermal dissipation
- 12 BTU/hr
- Open circuit detection time
- Positive full-scale reading within 5 s
- Overvoltage protection, max
- 8V DC
- Normal mode noise rejection
- 74 dB @ 50/60 Hz (15 Hz filter) 90 dB @ 60 Hz (20 Hz filter)
- Common mode noise rejection
- > 90 dB @ 50/60 Hz (15 Hz and 20 Hz filters only)
- Repeatability
- Better than 0.01% of range (15 Hz and 20 Hz filters only)
- Calibrated accuracy
- Better than 0.13% of range (all filters)
- Calibration interval
- 12 months typical
- Offset drift
- 27 µV/°C
- Gain drift with temperature
- 11 ppm/°C
- Module error
- 0.3% of range
- Module I/O scan time
- Analog: 11...328 ms (filter dependent)
- Module HART scan time
- Estimate 1 s if all 16 channels have HART enabled (scan time does not increase with enabling additional channels because one HART modem is assigned per channel.), Pass through messages, handheld communicators, secondary masters, communication errors, or configuration changes can significantly increase the update time
- Data format
- IEEE 32-bit floating point
- Input conversion method
- Sigma-Delta
- Module keying
- Electronic, software configurable
- RTB keying
- User-defined mechanical
- Slot width
- 1
Show all 49 specificationsShow fewer
- Wire size
- 1756-TBCH, Single wire connection: 0.33…2.1 mm2 (22…14 AWG) solid or stranded shielded copper wire rated at 105 °C (221 °F), or greater, 1.2 mm (3/64 in.) insulation max., Double wire connection: 0.33…1.3 mm2 (22…16 AWG) solid or stranded copper wire rated at 105 °C (221 °F), or greater, 1.2 mm (3/64 in.) insulation max. 1756-TBS6H, Single wire connection: 0.33…2.1 mm2 (22…14 AWG) solid or stranded shielded copper wire rated at 105 °C (221 °F), or greater, 1.2 mm (3/64 in.) insulation max.
- Terminal block torque spec
- 1756-TBCH 0.5 Nm (4.4 lbin)
- Wire category
- 2 - on signal ports
- Wire type
- Copper
- Enclosure type rating
- None (open-style)
- Temperature code
- T4
- Temperature, operating
- 0 °C ≤ Ta ≤ +60 °C (+32 °F ≤ Ta ≤ +140 °F)
- Temperature, nonoperating
- -40…+85 °C (-40…+185 °F)
- Relative humidity
- 5…95% noncondensing
- Conformal coated
- Yes
- Vibration
- 2 g @ 10…500 Hz
- Shock, operating
- 30 g
- Shock, nonoperating
- 50 g
- Emissions
- IEC 61000-6-4
- ESD immunity
- 6 kV contact discharges 8 kV air discharges
- Radiated RF immunity
- 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 1V/m with 1 kHz sine wave 80% AM from 2000…2700 MHz
- EFT/B immunity
- ±2 kV at 5 kHz on signal ports
- Surge transient immunity
- ±2 kV line-earth (CM) on shielded ports
- Conducted RF immunity
- 10V rms with 1 kHz sine wave 80% AM from 150 kHz…80 MHz
Technical documents (1)
Key features
- Dedicated HART modem on each of sixteen channels
- Sigma-Delta conversion with IEEE 32-bit floating point data
- Electronic module keying, software configurable
- Conformal coated, operating 0 °C to +60 °C
- Single slot width with 1756-TBCH or 1756-TBS6H terminal blocks
About the Allen-Bradley 1756-IF16H
The 1756-IF16H is a ControlLogix 16 point HART analog input module. Its sixteen differential current inputs each have a dedicated HART modem, with input ranges of 0…20 mA and 4…20 mA. Resolution is 16…21 bits and calibrated accuracy is better than 0.13% of range.
What is the 1756-IF16H used for?
It reads sixteen current loops and the HART data from smart transmitters, presenting values as IEEE 32-bit floating point after Sigma-Delta conversion. The module I/O scan time is 11...328 ms, depending on the filter. With a modem on every channel, the HART scan time is about 1 s with all 16 channels HART enabled.
Lifecycle and successor
Active (Rockwell Automation lifecycle status, checked 24 October 2026).
Before you order
What to photograph or confirm so the right unit is quoted.
Read the catalog number 1756-IF16H, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.
Other parts in the Allen-Bradley ControlLogix I/O Modules family
Listed for reference. They differ from the 1756-IF16H in rating, supply, interface or function and are not interchangeable with it unless Allen-Bradley says so. Match the part number on your unit.
| Product | Type | Lifecycle | Qty Available | Price | Action |
|---|---|---|---|---|---|
| Allen-Bradley 1756-IA16ControlLogix 16 Point 120V AC Input Module | Digital input module | Active | On request | On request | View |
| Allen-Bradley 1756-IB16ControlLogix 16 Point 12/24V DC Input Module | Digital input module | Active | On request | On request | View |
| Allen-Bradley 1756-IB16IControlLogix 16 Point Isolated 24V DC Input Module | Digital input module | Active | On request | On request | View |
| Allen-Bradley 1756-IB16SControl Logix Safety IO Module, 16 Sinking Inputs | Digital input module | Active | On request | On request | View |
| Allen-Bradley 1756-IB32ControlLogix 32 Point 12/24V DC Input Module | Digital input module | Active | On request | On request | View |
| Allen-Bradley 1756-IF16ControlLogix 16 Point Analog Input Module | Analog input module | Active | On request | On request | View |
| Allen-Bradley 1756-IF6IControlLogix 6 Point Isolated Analogue Input Module | Analog input module | Discontinued | On request | On request | View |
| Allen-Bradley 1756-IF8ControlLogix 8 Point A/I Module | Analog input module | Active | On request | On request | View |
| Allen-Bradley 1756-IF8IControlLogix 8 Point Isolated Analog Input Module | Analog input module | Active | On request | On request | View |
| Allen-Bradley 1756-IRT8IControlLogix 8 Point RTD/Thermocouple Input Module | Analog input module | Active | On request | On request | View |
| Allen-Bradley 1756-OA16ControlLogix 16 Point 74-265 VAC Output Module | Digital output module | Active | On request | On request | View |
| Allen-Bradley 1756-OA16IControlLogix 16 Point Isolated AC Output Module | Digital output module | Active | On request | On request | View |
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