Yokogawa AGS813-S10 Isolated Servo Module
The Yokogawa AGS813-S10, also cataloged as the AGS813 Isolated Servo Module, operates as a dedicated hardware component for position feedback processing, servo actuation, and emergency shutdown functions within Yokogawa DCS platforms.
Suffix Breakdown & Model Matrix
- AGS813: Base module designation for the turbomachinery servo control I/O module series.
- -S10: Hardware suffix indicating isolated channel execution and specific excitation configuration support.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AGS813-S10 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.36 kg |
| Dimensions | 144 mm x 100 mm x 30 mm |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Max 500 mA (at 5 VDC); 0.3 A (at +/-12 VDC nominal) |
| Input Channels | 4 isolated channels (LVDT and 1-5 VDC voltage signals) |
| Output Channels | 2 isolated channels (+/-25 mA or +/-50 mA selectable) |
| Excitation Voltage | 5 Vrms at 30 mArms |
| Excitation Frequencies | 2.8 kHz, 3.0 kHz, 3.2 kHz (selectable per channel) |
| Scan Cycle | 5 ms |
| Quick Close Input | 24 VDC ON/OFF signal for emergency shutdown |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The Yokogawa AGS813-S10 module delivers 4 isolated LVDT/voltage input channels and 2 isolated servo driver output channels to insulate control logic from high-voltage transients in turbomachinery applications. Operating in parallel with 4-20 mA HART loop protocol field networks, the module provides per-channel galvanic channel-to-channel isolation that prevents ground loop current propagation. Designed for precise valve actuation, the unit supports 3-wire, 5-wire, and 6-wire LVDT wiring configurations while maintaining rapid 5 ms scan cycles across continuous DCS execution layers.
Frequently Asked Questions
Q: How does the quick close function operate on the AGS813-S10 module?
A: The module accepts a discrete 24 VDC ON/OFF input signal that bypasses normal software control loops to drive servo outputs immediately to designated emergency shutdown thresholds.
Q: What excitation frequencies are available for LVDT sensors connected to the AGS813-S10?
A: Each isolated input channel allows software or switch selection of 2.8 kHz, 3.0 kHz, or 3.2 kHz excitation frequencies at 5 Vrms (30 mArms) to match specific sensor primary winding requirements.
Field Installation Guidelines
- De-energize sub-rack power rails before inserting or removing the AGS813-S10 module from its backplane slot.
- Ensure overall braided shield wiring for LVDT excitation and signal leads is grounded at a single earth point to eliminate common-mode noise.
- Configure the output current jumpers or software registers to select either +/-25 mA or +/-50 mA depending on the servo valve coil impedance.
- Route low-voltage LVDT feedback lines in separate wireways away from heavy AC power conduits and motor control circuits.
- Secure all module faceplate retaining screws to ensure continuous ground bonding and mechanical stability in high-vibration environments.
Yokogawa AGS813-S10 Isolated Servo Module
Yokogawa AGS813-S10 Isolated Servo Module
The Yokogawa AGS813-S10, also cataloged as the AGS813 Isolated Servo Module, operates as a dedicated hardware component for position feedback processing, servo actuation, and emergency shutdown functions within Yokogawa DCS platforms.
Suffix Breakdown & Model Matrix
- AGS813: Base module designation for the turbomachinery servo control I/O module series.
- -S10: Hardware suffix indicating isolated channel execution and specific excitation configuration support.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AGS813-S10 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.36 kg |
| Dimensions | 144 mm x 100 mm x 30 mm |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Max 500 mA (at 5 VDC); 0.3 A (at +/-12 VDC nominal) |
| Input Channels | 4 isolated channels (LVDT and 1-5 VDC voltage signals) |
| Output Channels | 2 isolated channels (+/-25 mA or +/-50 mA selectable) |
| Excitation Voltage | 5 Vrms at 30 mArms |
| Excitation Frequencies | 2.8 kHz, 3.0 kHz, 3.2 kHz (selectable per channel) |
| Scan Cycle | 5 ms |
| Quick Close Input | 24 VDC ON/OFF signal for emergency shutdown |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The Yokogawa AGS813-S10 module delivers 4 isolated LVDT/voltage input channels and 2 isolated servo driver output channels to insulate control logic from high-voltage transients in turbomachinery applications. Operating in parallel with 4-20 mA HART loop protocol field networks, the module provides per-channel galvanic channel-to-channel isolation that prevents ground loop current propagation. Designed for precise valve actuation, the unit supports 3-wire, 5-wire, and 6-wire LVDT wiring configurations while maintaining rapid 5 ms scan cycles across continuous DCS execution layers.
Frequently Asked Questions
Q: How does the quick close function operate on the AGS813-S10 module?
A: The module accepts a discrete 24 VDC ON/OFF input signal that bypasses normal software control loops to drive servo outputs immediately to designated emergency shutdown thresholds.
Q: What excitation frequencies are available for LVDT sensors connected to the AGS813-S10?
A: Each isolated input channel allows software or switch selection of 2.8 kHz, 3.0 kHz, or 3.2 kHz excitation frequencies at 5 Vrms (30 mArms) to match specific sensor primary winding requirements.
Field Installation Guidelines
- De-energize sub-rack power rails before inserting or removing the AGS813-S10 module from its backplane slot.
- Ensure overall braided shield wiring for LVDT excitation and signal leads is grounded at a single earth point to eliminate common-mode noise.
- Configure the output current jumpers or software registers to select either +/-25 mA or +/-50 mA depending on the servo valve coil impedance.
- Route low-voltage LVDT feedback lines in separate wireways away from heavy AC power conduits and motor control circuits.
- Secure all module faceplate retaining screws to ensure continuous ground bonding and mechanical stability in high-vibration environments.
