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3AI775.6

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B&R 3AI775.6 is a System 2005 analog input module with eight differential 0 to 20 mA channels and 12-bit conversion.
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Technical specifications for 3AI775.6

  • Manufacturer:
    B&R
  • Part Number:
    3AI775.6
  • Product Family:
    B&R System 2005
  • Product Type:
    System 2005 8-Channel 0–20 mA Analog Input Module
  • Stock:
    1
  • Analog inputs:
    8
  • Nominal range:
    0 to 20 mA
  • Permitted input range:
    -50 to +50 mA
  • Input load:
    50 Ω
  • Converter resolution:
    12 bit
  • Conversion time:
    Less than 1 ms for all channels; less than 1.5 ms with averaging
  • Conversion modes:
    Cyclic with optional averaging, direct, or software-timed
  • Software timing:
    2 to 65.535 ms
  • Basic accuracy:
    ±0.1% at 25°C
  • Power consumption:
    24 V: 3.5 W; 5 V: 1.0 W; total 4.5 W
  • Required terminal block:
    1 x TB170 ordered separately
  • Degree of protection:
    IP20
  • Operating temperature:
    0 to 60°C
  • Certifications:
    CE, UKCA, cULus E115267
  • Diagnostics:
    Module software and converter LED
  • Dimensions:
    16.5 × 4.0 × 11.0 cm
  • Tariff Code:
    8538900000
  • Country of origin:
    Germany
  • 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 Input Channels Conversion Diagnostics Application
  • Provides eight differential 0 to 20 mA inputs
  • Uses 12-bit conversion
  • Provides module software diagnostics

3AI775.6 is a System 2005 analog input module with eight differential 0 to 20 mA channels and 12-bit conversion.

It acquires current-loop process signals using cyclic, direct or software-timed conversion modes and provides converter diagnostics.

Before installation or replacement, verify the 0 to 20 mA loop polarity, 50 ohm input load, field power, common and shield arrangement, conversion mode, averaging, timing, scaling, TB170 terminal block and alarms.

Availability, condition, price, and shipping time for 3AI775.6 are confirmed during quotation.

B&R 3AI775.6 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.

  • Provides eight differential 0 to 20 mA inputs
  • Uses a documented 50 ohm input load
  • Electrically isolates the channels from the PLC
  • Uses 12-bit conversion
  • Converts all channels in less than 1 ms
  • Supports cyclic, direct and software-timed acquisition
  • Provides module software diagnostics
  • Provides a converter status LED
  • Requires loop, scaling and timing checks when readings are missing or unstable
  • Acquiring 0–20 mA pressure, flow and level transmitters
  • Fast multichannel process measurement with optional averaging
  • Replacing legacy current-input hardware while preserving scaling, timing and alarm behavior
Description
B&R 3AI775.6 is a System 2005 analog input module with eight differential 0 to 20 mA channels and 12-bit conversion.

It acquires current-loop process signals using cyclic, direct or software-timed conversion modes and provides converter diagnostics.

Before installation or replacement, verify the 0 to 20 mA loop polarity, 50 ohm input load, field power, common and shield arrangement, conversion mode, averaging, timing, scaling, TB170 terminal block and alarms.
Alternative Names
3AI775.6 3AI7756 3AI775 6 B&R 3AI775.6 B and R 3AI775.6 B&R System 2005 3AI775.6
Technical notes
B&R 3AI775.6 must be matched by complete material number, compatible System 2005 station or CPU, slot and terminal map, power and field wiring, saved project and connected devices. Back up the configuration and perform a controlled functional test after replacement.
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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 B&R 3AI775.6 read 4–20 mA transmitters?
Yes, within its 0–20 mA input range; configure project scaling so 4 mA represents the required live-zero value and define under-range diagnostics.
What must be checked before connecting transmitters with different ground references to B&R 3AI775.6?
The inputs are isolated from the PLC electronics but not from one another. Verify the common-mode conditions, transmitter-supply references, shield bonding and field grounding; use external signal isolators when the loop references are not compatible.
Why can B&R 3AI775.6 show a value near zero on a powered transmitter?
Check loop continuity, transmitter supply, polarity, TB170 terminal assignment, the 50 ohm input path, channel configuration and project scaling.
When should averaging be used on B&R 3AI775.6?
Use it when process noise matters more than the fastest response; B&R documents a slightly longer all-channel conversion time when averaging is enabled.
How can a broken 4–20 mA loop be detected when using B&R 3AI775.6?
Configure the application to flag current below the expected 4 mA live-zero threshold and evaluate the module diagnostics. A reading near 0 mA can indicate an open loop, an unpowered transmitter or a deliberately commanded zero-current signal, so the PLC logic must distinguish these conditions.
Is the TB170 terminal block included with B&R 3AI775.6?
No. Confirm the separately ordered TB170 type and preserve the exact channel, return and shield terminal map.
What acceptance test should follow installation of B&R 3AI775.6?
Apply known current references at several points on every channel, verify scaling, noise, alarms and timing, then compare live transmitter readings under controlled process conditions.