Product Overview

The Yokogawa AAV144-S50 is an analog input module. This device provides 16 isolated channels for voltage signal acquisition. It accepts either -10 to 10V or 1 to 5V input signals.

All channels can be configured together for consistent input range settings. Furthermore, the module features robust isolation between input and system. Therefore, it suits distributed control systems requiring reliable analog signal measurement.

Ordering Information Breakdown

The AAV144-S50 follows a specific suffix code structure. Understanding this code helps verify correct configuration.

• AAV144: Analog Input Module (-10 to +10V, 16-channel, Isolated).

• S: Standard type.

• 5: With no explosion protection.

• 0: Basic type.

General Specifications

The AAV144-S50 offers high-density analog input capability.

• Manufacturer: Yokogawa.

• Product Type: Analog Input Module.

• Number of Input Channels: 16, isolated.

• Weight: 0.2 kg.

• Data Update Period: 10 ms.

Input Specifications

The AAV144-S50 accepts multiple voltage ranges for flexibility.

Input Signal Options:

• 1 to 5 V.

• -10 to 10 V.

Input Signal Configuration:

• Input signals can be set together for CH1 to CH16.

• Therefore, all channels share the same input range.

Allowable Input Voltage:

• ±30 V maximum.

• Consequently, the module withstands moderate overvoltage without damage.

Input Resistance:

• Power ON: 1 MΩ.

• Power OFF: 200 kΩ.

Isolation and Withstanding Voltage

The AAV144-S50 provides robust electrical isolation for safety and noise immunity.

• Withstanding Isolated Voltage (Between input and system): 1500 V AC withstanding voltage for 1 minute.

• Isolation Type: Each channel is isolated from the system.

Therefore, the AAV144-S50 protects the control system from field wiring faults and ground loops.

Accuracy and Drift Specifications

The AAV144-S50 delivers reliable accuracy across its operating range.

• Accuracy: ±4 mV ±20 mV.

• Drift due to Ambient Temperature Change: ±4 mV/10°C ±20 mV/10°C.

For example, a 10°C temperature change introduces additional drift within these limits. Consequently, the module maintains reasonable accuracy in varying ambient conditions.

Power Consumption

The AAV144-S50 draws moderate power from the backplane.

• Maximum Current Consumption: 500 mA at 5 V DC.

External Communication and Wiring

The AAV144-S50 supports multiple wiring options for field connections.

• External Communication Options:

  • Pressure clamp terminal.

  • MIL connector cable.

  • Dedicated cable (KS1).

Hence, the module adapts to different installation requirements and wiring practices.

Key Features

The AAV144-S50 offers several advantages for analog input applications.

High Channel Density:
Provides 16 analog inputs in a single module. Therefore, it saves rack space compared to lower-density alternatives.

Channel-to-Channel Isolation:
Each channel is isolated from the system. Consequently, ground loops are eliminated and field wiring faults are contained.

Dual Input Range Support:
Accepts either -10 to 10V or 1 to 5V signals. Thus, it suits both bipolar and unipolar measurement applications.

Fast Data Update:
Updates all 16 channels every 10 ms. Hence, it captures dynamic process changes effectively.

Robust Overvoltage Protection:
Withstands up to ±30V continuous input. Therefore, accidental wiring errors are less likely to damage the module.

High Isolation Voltage:
Rated at 1500V AC between input and system. For this reason, it meets industrial safety standards for isolation barriers.

Lightweight Design:
Weighs only 0.2 kg. Consequently, it adds minimal load to the rack.

Low Power Consumption:
Consumes only 500 mA at 5V DC. Thus, it places a modest demand on the power supply.

Standard Type with No Explosion Protection:
The -S5 suffix indicates standard construction without explosion protection. Therefore, this module is suitable for safe area installations only.

Typical Applications

The AAV144-S50 suits various analog input monitoring applications.

• Voltage signal acquisition from field transmitters.

• Analog sensor monitoring in process control systems.

• Data logging for -10 to 10V signals.

• Retrofit upgrades to existing Yokogawa DCS installations.

• General purpose analog input for industrial automation.

Installation Guidelines

Install the AAV144-S50 in a compatible Yokogawa rack. First, ensure the rack power supply can provide the required 500 mA at 5V DC. Then, insert the module into an available slot.

Connect field wiring using one of the supported methods: pressure clamp terminal, MIL connector cable, or dedicated KS1 cable. For best noise immunity, use shielded twisted pair wiring.

Configure the input signal range (1 to 5V or -10 to 10V) for all 16 channels together. The data update period is fixed at 10 ms. Do not exceed ±30V allowable input voltage.

What is in the Box

Please inspect all items upon delivery.

• Yokogawa AAV144-S50 analog input module.

• Installation instruction manual.

• Anti-static protective bag.

Frequently Asked Questions (FAQ)

1. How many input channels does the AAV144-S50 have?

The AAV144-S50 provides 16 isolated analog input channels. All channels share the same configured input range.

2. What input signal ranges does this module accept?

The AAV144-S50 accepts either 1 to 5V or -10 to 10V input signals. The input signals are configured together for all channels.

3. What is the withstanding isolation voltage of this module?

The AAV144-S50 has 1500V AC withstanding voltage between input and system for 1 minute. Therefore, it provides robust electrical isolation.

4. What is the maximum current consumption of this module?

The AAV144-S50 consumes a maximum of 500 mA at 5 V DC. Consequently, it adds a modest load to the rack power supply.

5. Is this module suitable for hazardous area installations?

No. The -S5 suffix indicates standard type with no explosion protection. Therefore, the AAV144-S50 is for safe area (non-hazardous) installations only.