The Yokogawa AGP813, also cataloged as the AGP813 High-Speed Protection Module, operates as a dedicated hardware component for deterministic signal monitoring, speed tracking, and emergency trip execution within ProSafe-RS Safety Instrumented System networks. The module captures physical voltage transients, pulse rates, and Sequence of Events (SOE) state changes natively at the hardware tier to drive current sinking trip blocks within a 5 ms high-speed execution loop.
Hardware Specifications
Parameter
Specification
Model
AGP813
Brand
Yokogawa
Series
ProSafe-RS Platform / Turbomachinery Protection
Origin
Japan
Weight
Approx. 0.28 kg net component mass
Power Consumption
900 mA maximum current draw from internal 5 VDC logic rail
Scan Cycle Timing
5 ms deterministic high-speed cycle / 10 ms standard basic cycle
Withstanding Voltage
500 VAC dielectric barrier for 1 minute (System-to-Field / Channel-Group)
Multi-Tier Voltage Processing and Electrical Impedance Gating The module handles 4 isolated high-speed analog channels alongside 6 isolated basic-cycle channels configured for 1 to 5 VDC inputs. The front-end circuit enforces a strict ±4 mV accuracy limit with a thermal drift profile clamped at ±4 mV per 10 deg C. The internal input impedance transitions between 1 MΩ when powered and 100 kΩ when unpowered, ensuring the module limits signal loading during power-down faults.
Pulse Interface and Speed Transducer Tracking The pulse sub-assembly incorporates dedicated conditioning tracks for Magnetic Pickup (MPU) sensors and Active Pickup lines. The MPU interface decodes 0.5 to 150 Vpp signals across a 50 Hz to 25 kHz frequency spectrum, achieving a tracking accuracy of ±1 Hz below 2 kHz and ±0.05% of the reading up to 25 kHz. Active pickup stages execute frequency tracking down to 0.04 Hz, utilizing software-selectable hysteresis settings to filter out structural machine deck harmonics.
