AAI841-H00/CCC01

The Yokogawa AAI841-H00/CCC01 is a non-isolated analog I/O module providing 8 current input channels and 8 current output channels, each using a 4 to 20 mA signal range. The HART communication option supports digital communication with compatible field devices, while the CCC01 option specifies a connector cover for MIL cable connections (model ACCC01).

Functional Description

The AAI841 combines analog signal acquisition and output control in one module. Its eight input channels receive 4 to 20 mA signals from field transmitters, while eight output channels provide 4 to 20 mA signals to receiving devices such as control valves or other current-operated equipment.

The non-isolated channel configuration is an important consideration when checking field wiring and grounding arrangements. Input and output circuit isolation should not be assumed when integrating this module into an existing I/O configuration.

HART Communication

The H suffix identifies the HART digital communication option. In addition to conventional 4 to 20 mA process signals, HART communication allows the control system to access supported digital field-device information. Yokogawa documentation describes reading HART variables through HART Command #3.

This capability provides access to digital device information alongside the analog process value, subject to the connected field device and system configuration.

Connector Configuration

The /CCC01 option specifies a connector cover for MIL cable, identified by Yokogawa as ACCC01. This option should be considered when checking the module's cable connection arrangement and replacement configuration.

The 00 suffix identifies the basic type. The complete ordering code should be retained when selecting a replacement, rather than identifying the module by AAI841 alone.

Technical Specifications

Parameter	Specification
Model	AAI841-H00/CCC01
Brand	Yokogawa
Product Type	Analog I/O Module (Current I/O)
Input Channels	8
Output Channels	8
Input Signal	4 to 20 mA
Output Signal	4 to 20 mA
Channel Isolation	Non-isolated
Digital Communication	HART protocol
Allowable Input Current	25 mA
Input Accuracy	±16 µA
Connector Option	MIL cable connector cover
Connector Cover Model	ACCC01
Weight	0.3 kg

Ordering Code Identification

The complete model number identifies the module's communication and connection configuration:

Code	Description
AAI841	8-channel input / 8-channel output analog I/O module
H	HART digital communication
00	Basic type
/CCC01	MIL cable connector cover, ACCC01

Frequently Asked Questions

Q: Does the AAI841-H00/CCC01 support both analog input and analog output?

A: Yes. It provides eight 4 to 20 mA input channels and eight 4 to 20 mA output channels. Both functions are integrated into the same non-isolated module.

Q: What is the difference between AAI841-H00 and AAI841-S00?

A: The H suffix identifies the HART digital communication version, while S identifies the standard type. The H version supports digital communication with compatible HART field devices in addition to analog signal processing.

Q: What does the CCC01 option include?

A: CCC01 specifies a connector cover for MIL cable, identified as ACCC01. It is a connection-related ordering option and should be retained when replacing an existing module with the same configuration.

---