General Description

The AAI841 is an Analog I/O Module designed for use with Yokogawa's FIO systems. It provides 8 channels of input and 8 channels of output, handling both current and voltage signals. This module is suitable for dual-redundant configurations, enhancing reliability and availability in critical applications.

Technical Specifications

Number of I/O Channels:

• 8-channel input/8-channel output, non-isolated.

Input Signal:

• Current: 4 to 20 mA.
• Voltage: 1 to 5 V DC (allowable common mode voltage ±1 V or less).

Output Signal:

• 4 to 20 mA.

Allowable Input Current/Voltage:

• Current input: 25 mA.
• Voltage input: ±7.5 V.

Input Resistance:

• Power ON:
  • 400 Ω (at 20 mA) to 1000 Ω (at 4 mA).
• Power OFF:
  • 500 kΩ or larger for current input.
  • 340 kΩ or larger for voltage input.

Accuracy:

• Input: ±16 µA.
• Output: ±48 µA.

Data Update Period:

• 10 ms.

Step Response Time:

• Input: 100 ms.
• Output: 40 ms.

Transmitter Power Supply:

• 14.8 V or higher (at 20 mA).
• 26.4 V or less (at 0 mA).

Temperature Drift:

• ±0.1 %/10 °C.

Maximum Current Consumption:

• 310 mA (5 V DC).
• 500 mA (24 V DC).

Weight:

• 0.3 kg.

External Connection:

• Pressure clamp terminal, KS cable, MIL connector cable.

HART Communication:

• Available for current input and output.

Suffix Codes:

• -S: Standard type
• -H: With digital communication (HART protocol)
• 5: No explosion protection
• E: With explosion protection
• 0: Basic type
• 3: With ISA Standard G3 option and temperature (-20 to 70 °C) option

Option Codes:

• /K4A00: With KS Cable Interface Adapter [Model: ATK4A-00]
• /A4S00: With Pressure Clamp Terminal Block for Analog [Model: ATA4S-00]
• /A4S10: With Pressure Clamp Terminal Block for Analog (surge absorber) [Model: ATA4S-10]
• /A4D00: With Dual Pressure Clamp Terminal Block for Analog [Model: ATA4D-00]
• /A4D10: With Dual Pressure Clamp Terminal Block for Analog (surge absorber) [Model: ATA4D-10]
• /CCC01: With Connector Cover for MIL Cable [Model: ACCC01]