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Analog outputs

Analog outputs (AOs) in Robopipe controllers are designed for controlling external devices such as valves, heat exchangers, or other actuators requiring analog voltage or current signals. These outputs provide precise signal regulation for various applications.

Connection

  • Voltage Output (AOV): Connect the positive terminal of the external device to AOVx or AOVy.x and the common ground to AGND

  • Current Output (AOR): Connect the positive terminal of the external device to AORx or AORy.x and the common ground to AGND

Ensure no short circuits or prolonged overloading occurs, as these may cause permanent damage to the analog output, leading to errors or complete output failure.

Modes of Operation

Section 1 Analog Outputs (AOR)

  • Voltage Mode - Provides a signal range of 0–10 V⎓

  • Current Mode - Provides a signal range of 0–20 mA

  • Resistance Measurement - Supports resistance sensors like PT1000 (up to 1960 Ω)

Configuration:

  • Select the desired mode via software (e.g., Mervis, EVOK)

  • Output values are controlled by entering the corresponding signal value in software

Sections 2, 3

  • Voltage Mode Only - Provides a signal range of 0–10 V⎓

Configuration:

  • Enter the required output value in software (e.g., 0–4000, corresponding linearly to 0–10 V⎓)

Special Functions

Default Configuration

  • Saves the current settings for the section into memory

  • Restores the settings after power cycling or reboot

Default Values:

  • Output Mode: Voltage output

  • Output Value: 0 V⎓

Master Watchdog

  • Monitors communication between the unit and the control application

  • Reverts to default configuration if communication is lost, ensuring connected devices are protected

Technical Specifications

Parameter

Section 1 (AOR)

Sections 2/3, S5xx Units (AOV)

Output Terminals

AOR

AOV

Common Conductor

AGND

AGND

Output Modes

0–10 V⎓ voltage

0–10 V⎓ voltage

0–20 mA current

—

Resistance measurement (0–1960 Ω)

—

Output Voltage Range

0–10 V⎓

0–10 V⎓

Output Current Range

0–20 mA

—

Maximum Output Current

20 mA

20 mA

Accuracy

±0.5 %

±0.5 %

Resolution

12 bits

12 bits

Conversion Time

1 ms

300 μs

Protection Type

Integrated overvoltage

Integrated overvoltage

Galvanic Isolation

No

Yes (from other sections*)

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