SPECIFICATIONS
Part No.: IC200ALG620
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
No. of channels: 4
Voltage Range: 5 V nominal
RTD Types: Platinum, Copper, Nickel, Nickel/Iron
Update Rate: 210 ms
Power Consumption: 125 mA from +5V bus
Product Type: Analog input Module
Availability: In Stock
Series: VersaMax
Functional Description
IC200ALG620 is an analog input module developed by GE. It is part of the VersaMax series. The module is designed to provide precise temperature measurements using Resistance Temperature Detectors (RTDs). This module offers robust performance and versatile functionality, making it suitable for temperature monitoring.
Features
- 4-Channel 16-Bit RTD Inputs: The module is equipped with four analog input channels that support RTD sensors. Each channel is capable of providing 16-bit resolution, offering high precision in temperature measurement. This makes it ideal for processes where precise temperature control is critical.
- Automatic Calibration: To maintain accuracy, the module automatically performs A/D (Analog to Digital) calibration at power-up. This calibration is repeated periodically during operation to compensate for any changes in ambient temperature, ensuring that the module continues to provide precise measurements over time without the need for manual intervention.
- Host Interface: The module provides 4 words of analog input data, which are communicated to the host system. This allows the module to integrate seamlessly with the control system, delivering real-time temperature data that can be used for monitoring, control, and safety applications.
LED Indicators for Status Monitoring
- The module features LED indicators that provide clear, at-a-glance information about the module's status and power conditions:
- FLD PWR LED (Green): Indicates the presence of both backplane power and field power for the analog field-side circuits. If either the backplane or field power is absent, this LED will turn off.
- OK LED: Reflects the overall status of the module with the following signals:
- On Green: Indicates normal operation.
- Flashing Green: Indicates the module is in boot mode or undergoing a firmware update.
- Flashing Amber: Indicates a self-diagnostic error, suggesting that the module has detected an internal issue that needs attention.
- Off: Indicates that the module is not receiving 3.3V backplane power, meaning it is not operational.
Comprehensive Diagnostics
The module includes advanced diagnostic capabilities to ensure reliable operation and easy troubleshooting. The module can report a range of diagnostic conditions to the I/O Fault Table, including:
- Over/Under Range: Alerts when the input signal is outside the expected range.
- Open Wire: Detects if an RTD sensor is disconnected or has a broken wire.
- Non-Volatile Memory Storage: Ensures critical configuration and calibration data are retained even if the module is powered off.
- High/Low Alarm: Triggers alarms when the measured temperature exceeds predefined high or low thresholds.
- Input Short: Detects if the input channel is shorted, preventing incorrect readings.
Cable Shield Connections
- To ensure optimal signal integrity and minimize interference, grounding the cable shield is critical in certain setups. Ideally, the cable should be grounded at the source device. This method prevents external electrical noise from affecting the signal at its origin. However, if grounding at the source device is not possible, the next best alternative is to ground the cable shield at the input/output module itself.
- In these cases, grounding can be done using an Auxiliary input/output terminal, which is specifically designed to handle such connections.
- If the module is mounted on a terminal-style input/output carrier, the grounding connection for the cable shield can be made via an Auxiliary input/output terminal attached directly to the carrier. This configuration helps maintain proper grounding and ensures a clean signal path.
- For installations on a compact terminal-style input/output carrier, grounding the shield can be achieved using an Auxiliary input/output terminal located near the carrier. In this case, it is essential to make sure the terminal strip is grounded to ensure the shield is effectively connected.
- In scenarios where the module is installed on a connector-style input/output carrier, the cable shield can be connected directly to an interposing terminal. These terminals provide a reliable grounding point for the shield. When using interposing terminals, it is recommended to use a shielded interposing cable between the interposing terminal and the connector base for additional protection against signal interference.
- A custom shielded cable can be created using the appropriate connector kit. Additionally, for extra shielding, a custom shield braid can be wrapped around standard interposing cables. If this approach is used, it is important to ensure the shield braid is properly grounded to prevent any potential electrical noise from affecting the signal transmission.
The WOC team is always available to help you with your Mark I and II requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IC200ALG620?
It is an Analog input Module developed by GE under VersaMax series.
How does the module maintain accuracy?
The module performs automatic A/D (Analog to Digital) calibration at power-up and periodically during operation. This ongoing calibration helps compensate for changes in ambient temperature, ensuring the module continues to provide accurate measurements without requiring manual recalibration.
What happens if the FLD PWR LED is off?
If the FLD PWR LED is off, it indicates that either the backplane power or the field power is not present. This means the analog field-side circuits are not receiving the necessary power to operate, and the module may not function correctly until the power issue is resolved.
How many input channels does the module have?
The module has four analog input channels, each capable of providing high-resolution (16-bit) temperature data.
