Description

Yokogawa AGS813-S10 Signal Conditioner Nest

Configured for termination and distribution of I/O signal lines in Yokogawa CENTUM-series distributed control systems, the Yokogawa AGS813-S10 (base model AGS813) provides direct physical and electrical execution through a 16-slot backplane structure supporting modular signal conditioners. It integrates field wiring terminations with system-side connections while maintaining defined channel separation and power distribution paths.

Hardware Specifications

Parameter	Specification
Model Brand	Yokogawa AGS813-S10
Origin	Japan
Weight	Approx. 4.5 kg (empty chassis)
Dimensions	482.6 mm x 133.4 mm x 280 mm
Operating Temp	-10 to 60 degC
Power Consumption	24 VDC nominal, 5 A max backplane load
Slot Count	16
Mounting Type	19-inch rack mount
Conformal Coating	Yes (corrosion-resistant variant)

Channel-to-Channel Isolation Characteristics

The AGS813-S10 implements galvanic separation between adjacent signal conditioner slots to suppress cross-talk and maintain measurement integrity under high-noise industrial conditions. Each slot’s backplane circuitry supports independent return paths, minimizing interference from common-mode voltage fluctuations. This isolation scheme aligns with Yokogawa’s standard 4-20 mA HART loop protocol handling, allowing mixed analog input/output modules without performance degradation due to shared ground loops.

Frequently Asked Questions

Q: Can individual signal conditioner modules be replaced without shutting down the entire nest?

A: Yes. The backplane supports hot-swapping of modules, provided replacement occurs slot-by-slot with correct ESD precautions.

Q: Does the AGS813-S10 support redundant power input?

A: Redundant 24 VDC power feeds can be connected via separate terminals on the backplane to ensure uninterrupted operation during single-source failure.

Q: Is the conformal coating compatible with high H2S environments?

A: Yes. The S10 variant meets Yokogawa specifications for protection against hydrogen sulfide and sulfur dioxide exposure.

Field Installation Guidelines

Install the AGS813-S10 in a grounded 19-inch rack enclosure, ensuring adequate clearance for ventilation at both top and bottom. Use shielded twisted-pair cabling for all field wiring, terminating shields to the designated earth bar at a single point to prevent ground loops. Torque terminal screws to manufacturer-recommended values (typically 0.5–0.6 Nm). Verify slot alignment before inserting modules to avoid bent pins. Confirm backplane voltage stability prior to powering up any installed I/O modules.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems