Product Introduction
When turbine control demands high accuracy and reliability, the Yokogawa AGS813-S10 Turbomachinery I/O Module delivers precise servo management for critical applications. This module receives LVDT or 1 to 5 V DC position feedback signals and 24 V DC ON/OFF signals for quick close, then outputs up to ±50 mA for servo control. Part of the AGS813 series, the Yokogawa AGS813-S10 is designed to minimize downtime and extend service life, providing a cost-effective solution for long-term turbine operations.
Technical Specifications
The following table lists key parameters of the Yokogawa AGS813-S10:
| Parameter |
Value |
| LVDT Input Channels |
4, isolated |
| LVDT Wiring Types |
3, 5, or 6 wires |
| LVDT Excitation Voltage |
5 Vrms at 30 mArms |
| LVDT Excitation Frequency |
2.8, 3.0, 3.2 kHz (selectable) |
| LVDT Accuracy |
±1% (Input 0.7–5 Vrms, Span ≥2.5 Vrms) |
| Voltage Input Channels |
4, isolated (1 to 5 V) |
| Voltage Input Accuracy |
±4 mV |
| Current Output Channels |
2, isolated (selectable ±25 or ±50 mA) |
| Current Output Accuracy |
±150 μA (±25 mA) / ±300 μA (±50 mA) |
| Digital Inputs |
2, isolated (24 V DC sink) |
| Scan Cycle |
5 ms |
| Withstanding Voltage |
500 V AC for 1 minute (system/field) |
| Power Consumption |
500 mA at 5 V DC |
| Weight |
Approx. 0.36 kg |
Industry Applications
The Yokogawa AGS813-S10 excels in steam and gas turbine control systems where precise valve positioning is crucial. In a typical combined-cycle plant, the module manages servo valves for inlet guide vanes, ensuring stable operation under varying loads. For compressor applications, the AGS813-S10 provides fast response to surge conditions through its digital inputs and current outputs, reducing wear on mechanical components. By maintaining accurate feedback from LVDTs, this module extends the life of actuators and lowers maintenance costs, delivering clear ROI.
Installation & Setup Guidance
When installing the Yokogawa AGS813-S10, use the dedicated AKB337 cable series (M005, M007, M010) for external connections. For LVDT inputs, select the appropriate wiring scheme (3, 5, or 6 wires) and set the excitation frequency independently per channel via configuration software. Ensure the external power supply provides +11.4 to +13.2 V DC at 0.3 A for both LVDT excitation and current output loops. The module weighs only 0.36 kg, fitting easily into standard 19-inch racks. Verify that the withstanding voltage (500 V AC) separation between system and field is maintained during installation.
Maintenance & Reliability
To maximize the lifespan of the Yokogawa AGS813-S10, perform annual inspections of the LVDT excitation circuits and output current accuracy. The drift specification (±0.4%/10°C for LVDT, ±4 mV/10°C for voltage inputs, ±50 μA/10°C for current outputs) indicates stable performance over temperature, but periodic calibration is recommended. Keep cable connections tight and free from moisture. The circuit-open detection feature on the current outputs alerts operators to broken loops, enabling rapid troubleshooting. Following these steps reduces unscheduled downtime and supports the module’s long-term cost benefits.
Selection Guide & Purchasing Advice
Before purchasing the Yokogawa AGS813-S10, verify that the suffix codes meet your system requirements: the ‘S’ denotes standard type, ‘1’ is fixed, and ‘0’ indicates basic type. Ensure your controller supports the scan cycle of 5 ms and the input/output isolation scheme. As a reliable supplier, UBEST Automation (visit ubest101.myshopify.com) offers genuine Yokogawa modules with proven track records. For further assistance, contact our team to confirm compatibility with your turbine control system.