Yokogawa AGP813 High-Speed Turbomachinery Protection I/O Module, 5ms Scan, Isolated Channels

Product Overview

The AGP813 is a high-speed turbomachinery protection I/O module designed for the Yokogawa CENTUM VP AGS813 high-speed protection series. It delivers 5-millisecond scan cycle performance for critical machinery protection applications such as steam turbines, gas turbines, and compressors. The module features isolated analog inputs, digital inputs, and digital outputs with dedicated high-speed and standard-speed channels for flexible signal management.

Key Specifications

• System: Yokogawa CENTUM VP (AGS813 series)
• High-Speed Analog Inputs: 4 channels, isolated, 1–5 VDC
• Standard Analog Inputs: 6 channels, isolated, 1–5 VDC
• Analog Input Accuracy: ±4 mV
• Temperature Drift: ±4 mV per 10°C
• Input Impedance (Powered): ≥ 1 MΩ
• Max Input Voltage: 30 VDC absolute
• High-Speed Digital Inputs: 4 channels, 24 VDC sinking
• Standard Digital Inputs: 8 channels, 24 VDC sinking
• Input ON Voltage: 18–26.4 VDC / OFF: ≤ 5 VDC
• Input Current: 4.1 mA ± 20%
• High-Speed Digital Outputs: 4 channels, current sinking, 100 mA per channel
• Standard Digital Outputs: 8 channels, current sinking, 100 mA per channel
• Output ON Voltage: 0.3 VDC / Leak Current: 0.1 mA
• Output Delay: 1 ms
• Scan Cycle: 5 ms (high-speed) / 10 ms (standard)
• Withstand Voltage: 500 V AC for 1 minute
• Power Consumption: 900 mA at 5 VDC
• Connection Cable: AKB337 dedicated cable
• Weight: 0.28 kg
• Operating Temperature: 0°C to +60°C

Features & Benefits

1. 5ms High-Speed Protection: Ultra-fast scan cycle enables rapid detection of overspeed, vibration, and temperature excursions for turbine trip protection.
2. Complete Channel Isolation: All analog and digital channels are electrically isolated, preventing ground loops and cross-talk in noisy turbomachinery environments.
3. Dual-Speed Architecture: Separate high-speed (5 ms) and standard (10 ms) channels optimize processing resources for critical vs. non-critical signals.
4. Built-In Application Logic: Supports up to 100 logic blocks with 5 ms or 10 ms control periods for custom protection algorithms.
5. Compact and Lightweight: 0.28 kg module minimizes chassis load while delivering full protection I/O capability.

FAQ

Q: What types of turbomachinery is the AGP813 designed for?
A: The AGP813 is optimized for steam turbines, gas turbines, centrifugal compressors, and expanders requiring millisecond-level protection response.

Q: Can the AGP813 execute custom trip logic?
A: Yes, the module supports application logic (APL) with built-in logic blocks including arithmetic, comparison, timer, and trip functions executing at 5 ms or 10 ms periods.

Q: What cable is required for the AGP813?
A: The module requires the AKB337 dedicated cable (available in 0.5 m, 0.7 m, and 1.0 m lengths) for connection to the field terminal assembly.

Installation Guide

• Install the module into a designated high-speed protection slot of the AGS813 chassis.
• Connect AKB337 cables from the module to the field terminal block.
• Wire analog sensors (vibration probes, speed pickups) to the high-speed analog input channels.
• Wire trip solenoids and alarm indicators to the high-speed digital output channels.
• Configure protection setpoints and logic via the Logic Builder in CENTUM VP engineering software.
• Verify scan cycle timing and trip response via the module diagnostic monitor.

Selection Tips

• Speed Requirements: The 5 ms scan is essential for overspeed protection. For slower processes such as bearing temperature monitoring, standard 10 ms channels are sufficient.
• Signal Count: Verify total analog and digital I/O count against the 4+6 analog and 4+8 digital channel capacity before ordering.
• Cable Length: Select AKB337 cable length based on chassis-to-terminal block distance. Do not exceed recommended lengths to maintain signal integrity.