AAI835-H50/13S00 | Yokogawa CENTUM VP | 4-Channel Isolated Analog I/O Module

Product Description

The AAI835-H50/13S00 (Part Number AAI835-H50/13S00) is a specialized, high-integrity analog input/output module designed for Yokogawa’s CENTUM VP and CS 3000 control architectures. This module is engineered to handle 4 to 20 mA signals across four dedicated input and four dedicated output channels, totaling 8 points of connectivity. Its primary strength lies in its comprehensive electrical isolation, which provides a dedicated barrier for each channel to prevent cross-talk and safeguard the system backplane from field-generated electrical surges.

Integrated with HART digital communication, the AAI835-H50/13S00 allows maintenance teams to extract secondary process variables and health diagnostics from smart transmitters and positioners. This unit is supplied with the ATI13S-00 pressure clamp terminal block (indicated by the /13S00 suffix), ensuring secure, vibration-resistant wiring for isolated analog signals. The hardware is built for extreme reliability, maintaining precision performance within a wide thermal envelope from -20°C to +70°C.

Technical Specifications

• Input Channels 4 channels, isolated, 4 to 20 mA DC

• Output Channels 4 channels, isolated, 4 to 20 mA DC

• Digital Communication HART protocol supported on all channels

• Input Resistance 250 Ω (Power ON)

• Output Load Resistance 600 Ω maximum

• Data Update Frequency 10 ms cycle

• Galvanic Isolation 500 V AC for 60 seconds (Channel-to-System and Channel-to-Channel)

• Power Consumption 5 V DC at 320 mA and 24 V DC at 300 mA

• Wiring Interface Pressure clamp terminal block (ATI13S-00)

• Environmental Protection Standard type with no explosion protection (Suffix 5)

• Physical Weight Approximately 0.3 kg

Module Suffix Configuration

• AAI835 Base series for isolated 4-channel input and 4-channel output

• -H Integrated HART pass-through communication

• 5 Standard version without explosion-proof certification

• 0 Basic hardware functional type

• 13S00 Equipped with the ATI13S-00 pressure clamp terminal assembly

Ideal Application Environments

• Small-scale loop control requiring both sensing and actuation on the same module.

• Processing units where ground potential differences necessitate channel-to-channel isolation.

• Integration of smart valves and transmitters into a CENTUM VP maintenance station.

• Facilities located in regions with high ambient temperature fluctuations.

Technical FAQ

How does this module differ from the non-isolated AAI841?

While both modules handle inputs and outputs, the AAI835-H50/13S00 provides full channel-to-channel isolation. This makes it superior for environments with complex grounding issues where signal interference must be eliminated at the source.

What is the significance of the 10ms update period?

The high-speed 10 ms data update cycle ensures that the AAI835-H50/13S00 can be used in fast-acting control loops where real-time response is critical for process stability and safety.