Yokogawa AAR145-S50 Product Introduction

The Yokogawa AAR145-S50 is a high-precision analog alarm relay designed for industrial automation and process control applications. It provides reliable alarm functionality by monitoring process signals and triggering relays when predefined thresholds are exceeded. The device is built to withstand harsh industrial environments, offering durability and long-term stability.

The AAR145-S50 is widely used in industries such as oil and gas, chemical processing, power generation, and water treatment. Its compact design and easy integration make it a preferred choice for engineers and technicians.

Product Advantages

1. High Precision: Ensures accurate alarm triggering with minimal false alarms.

2. Robust Construction: Designed to operate in harsh industrial environments with resistance to vibration and electrical noise.

3. Easy Configuration: User-friendly interface for quick setup and adjustment.

4. Versatile Compatibility: Works seamlessly with various Yokogawa instruments and third-party devices.

5. Reliable Performance: Long operational life with minimal maintenance requirements.

6. Compact Design: Saves space in control panels and enclosures.

Technical Parameters

Applications

The AAR145-S50 is used in various industrial applications, including:

• Process Monitoring: Detects abnormal conditions in pipelines, tanks, and reactors.

• Safety Systems: Triggers alarms or shutdowns in critical situations.

• Energy Management: Monitors power consumption and overloads.

• Water Treatment: Alerts for pH, flow, or pressure deviations.

• Manufacturing: Ensures equipment operates within safe parameters.

Compatible Models

The AAR145-S50 can be paired with the following Yokogawa products:

• Yokogawa UTAdvanced Series: For signal conditioning and isolation.

• Yokogawa DXAdvanced Series: For data acquisition and logging.

• Yokogawa AXF Series Magnetic Flowmeters: For flow monitoring.

• Yokogawa EJA Series Pressure Transmitters: For pressure measurement.

• Yokogawa DPharp Series: For level and pressure sensing.

Installation Instructions

1. Mounting: Secure the unit on a DIN rail or panel using the provided clips.

2. Wiring: Connect the input signal, power supply, and relay outputs as per the wiring diagram.

3. Configuration: Set the alarm thresholds using the front-panel controls or software interface.

4. Testing: Verify the alarm triggers by simulating input signals.

5. Final Check: Ensure all connections are tight and the unit is properly grounded.

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FAQ (Frequently Asked Questions)

Q1: What is the maximum load current for the relay contacts?
A1: The relay contacts can handle up to 5 A at 250 V AC or 30 V DC.

Q2: Can the AAR145-S50 be used with DC power supply?
A2: No, it requires a 100-240 V AC power supply. For DC operation, consider the AAR145-S10 or AAR145-S60.

Q3: Is the unit suitable for outdoor use?
A3: No, the IP20 rating means it is designed for indoor use only. For outdoor applications, additional protection is needed.

Q4: How do I adjust the alarm setpoints?
A4: Use the front-panel buttons or connect to a Yokogawa configuration tool for precise adjustments.

Q5: What is the response time of the alarm relay?
A5: The typical response time is less than 100 ms, depending on the input signal.

Q6: Can multiple AAR145-S50 units be daisy-chained?
A6: No, each unit operates independently. For multi-channel monitoring, consider the DXAdvanced series.