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3AO775.6

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B&R 3AO775.6 is a System 2005 analog output module with eight 0 to 20 mA channels, 11-bit conversion and short-circuit-protected outputs.
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Technical specifications for 3AO775.6

  • Manufacturer:
    B&R
  • Part Number:
    3AO775.6
  • Product Family:
    B&R System 2005
  • Product Type:
    System 2005 8-Channel 0–20 mA Analog Output Module
  • Stock:
    1
  • Analog outputs:
    8
  • Output range:
    0 to 20 mA
  • Converter resolution:
    11 bit
  • Conversion time:
    250 µs for all outputs
  • Basic accuracy:
    ±0.5% at 20°C
  • Power consumption:
    24 V: 4.5 W; 5 V: 1.0 W; total 5.5 W
  • Diagnostics:
    Module software and converter LED
  • Required terminal block:
    1 x TB170 ordered separately
  • Degree of protection:
    IP20
  • Operating temperature:
    0 to 60°C
  • Certifications:
    CE, UKCA, cULus E115267
  • Output protection:
    Short-circuit proof
  • Channel-to-PLC isolation:
    Yes
  • 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 Output Channels Conversion Protection Application
  • Provides eight 0 to 20 mA analog outputs
  • Updates all outputs in 250 microseconds
  • Provides short-circuit-protected outputs

3AO775.6 is a System 2005 analog output module with eight 0 to 20 mA channels, 11-bit conversion and short-circuit-protected outputs.

It generates current-loop setpoints for compatible valves, drives and process devices with simultaneous all-channel updates in 250 microseconds.

Before installation or replacement, verify the 0 to 20 mA channel scaling, loop load and field supply, polarity, common and shield arrangement, safe fallback values, TB170 terminal block, conversion diagnostics and actuator response.

Availability, condition, price, and shipping time for 3AO775.6 are confirmed during quotation.

B&R 3AO775.6 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 0 to 20 mA analog outputs
  • Uses 11-bit conversion
  • Electrically isolates outputs from the PLC
  • Updates all outputs in 250 microseconds
  • Provides converter-status diagnostics
  • Requires project scaling and engineering units to match the connected devices
  • Provides short-circuit-protected outputs
  • Requires loop load and field wiring to be checked
  • Requires safe fallback behavior to be verified before returning the machine to service
  • Commanding 0–20 mA proportional valves and process actuators
  • Providing multichannel setpoints to compatible drives and control devices
  • Replacing a legacy current-output module while preserving scaling and fail-safe behavior
Description
B&R 3AO775.6 is a System 2005 analog output module with eight 0 to 20 mA channels, 11-bit conversion and short-circuit-protected outputs.

It generates current-loop setpoints for compatible valves, drives and process devices with simultaneous all-channel updates in 250 microseconds.

Before installation or replacement, verify the 0 to 20 mA channel scaling, loop load and field supply, polarity, common and shield arrangement, safe fallback values, TB170 terminal block, conversion diagnostics and actuator response.
Alternative Names
3AO775.6 3AO7756 3AO775 6 B&R 3AO775.6 B and R 3AO775.6 B&R System 2005 3AO775.6
Technical notes
B&R 3AO775.6 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 3AO775.6 drive 4–20 mA actuators?
Yes, when the project is scaled so the commanded range uses 4–20 mA within the module's documented 0–20 mA output capability.
What must be checked before B&R 3AO775.6 controls devices powered from different field supplies?
The outputs are isolated from the PLC but not from one another. Verify that the field-supply references, output commons, grounding and shield arrangement are mutually compatible; use external signal isolators where incompatible references must remain separated.
Why can a B&R 3AO775.6 channel remain at zero despite a nonzero command?
Check project mapping and forcing, scaling, TB170 terminals, loop continuity and polarity, field device input and whether a short-circuit fault is active.
Why might B&R 3AO775.6 fail to reach the commanded 20 mA under load?
Check the connected device’s input burden, loop resistance, field-supply condition, cable voltage drop, TB170 terminals and loop polarity. Excessive loop burden or a wiring fault can prevent the commanded current from being established.
Why can an actuator move in the wrong direction after replacing B&R 3AO775.6?
Verify the channel assignment, 4–20 mA scaling, direct or reverse actuator action, configured output limits, loop polarity and the actuator’s zero and span calibration before returning the process to automatic control.
Is the TB170 terminal block supplied with B&R 3AO775.6?
No. Confirm the separately ordered TB170 version and preserve every output, common and shield terminal assignment.
What acceptance tests matter after installing B&R 3AO775.6?
Measure every channel at zero, midscale and full-scale commands under the real load, verify polarity, alarms and safe stop behavior, then test controlled actuator response.