Yokogawa AAT145-S50 Analog Output
The Yokogawa AAT145-S50, also cataloged as the AAT145 Analog Output Module, operates as a dedicated hardware component for 16-channel current loop driving and control valve positioning within CENTUM VP and CENTUM CS 3000 systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AAT145-S50 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.4 kg |
| Dimensions | 163 x 38 x 58 mm |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Baseplate bus powered |
| Module Type | Analog Output Module |
| Channels | 16 isolated outputs |
| Output Signal | 4-20 mA DC |
| Resolution | 12-16 bit (typical) |
| Isolation | Channel-to-bus and channel-to-channel |
| Load Resistance | Up to 600 ohm |
DCS Process Control & Isolation Architecture
The Yokogawa AAT145-S50 analog output card handles multi-channel 4-20 mA current loop driving across CENTUM automation architectures. Designed with channel-to-channel isolation circuits, the card isolates output control channels from internal backplane logic and adjacent loops, eliminating ground loops and suppressing crosstalk. The module supports 4-20 mA HART loop protocol pass-through and continuous output circuit diagnostic monitoring, ensuring precise loop command execution across final control elements.
Frequently Asked Questions
Q: Are individual output channels on the AAT145-S50 galvanically isolated from one another?
A: Yes, each output channel features galvanically isolated circuitry from the system backplane bus and from adjacent output channels, preventing ground loops and cross-talk.
Q: Does the AAT145-S50 support online hot-swapping during active operation?
A: Hot-swapping is supported when the card is deployed in redundant I/O baseplate configurations, allowing online replacement without interrupting active process loops.
Q: What is the functional difference between the AAT145-S50 and the AAT145-S51 module variants?
A: The AAT145-S50 serves as the standard 16-channel 4-20 mA analog output module, whereas the S51 suffix configuration incorporates enhanced diagnostic functions and fieldbus integration capability.
Field Installation Guidelines
- Align the AAT145-S50 module with the dedicated I/O baseplate slot guide rails and push firmly until fully engaged.
- Secure the retaining screws to ensure solid chassis grounding and prevent connector decoupling from panel vibration.
- Route all 4-20 mA current loop field wiring through separate low-voltage instrument conduits isolated from AC power conductors.
- Land signal cable shields onto the cabinet earth bus bar following single-point grounding rules.
- Maintain adequate convection clearance around the baseplate rack to operate within the 0 to 55 deg C ambient temperature limits.
Yokogawa AAT145-S50 Analog Output
Yokogawa AAT145-S50 Analog Output
The Yokogawa AAT145-S50, also cataloged as the AAT145 Analog Output Module, operates as a dedicated hardware component for 16-channel current loop driving and control valve positioning within CENTUM VP and CENTUM CS 3000 systems.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AAT145-S50 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 0.4 kg |
| Dimensions | 163 x 38 x 58 mm |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Baseplate bus powered |
| Module Type | Analog Output Module |
| Channels | 16 isolated outputs |
| Output Signal | 4-20 mA DC |
| Resolution | 12-16 bit (typical) |
| Isolation | Channel-to-bus and channel-to-channel |
| Load Resistance | Up to 600 ohm |
DCS Process Control & Isolation Architecture
The Yokogawa AAT145-S50 analog output card handles multi-channel 4-20 mA current loop driving across CENTUM automation architectures. Designed with channel-to-channel isolation circuits, the card isolates output control channels from internal backplane logic and adjacent loops, eliminating ground loops and suppressing crosstalk. The module supports 4-20 mA HART loop protocol pass-through and continuous output circuit diagnostic monitoring, ensuring precise loop command execution across final control elements.
Frequently Asked Questions
Q: Are individual output channels on the AAT145-S50 galvanically isolated from one another?
A: Yes, each output channel features galvanically isolated circuitry from the system backplane bus and from adjacent output channels, preventing ground loops and cross-talk.
Q: Does the AAT145-S50 support online hot-swapping during active operation?
A: Hot-swapping is supported when the card is deployed in redundant I/O baseplate configurations, allowing online replacement without interrupting active process loops.
Q: What is the functional difference between the AAT145-S50 and the AAT145-S51 module variants?
A: The AAT145-S50 serves as the standard 16-channel 4-20 mA analog output module, whereas the S51 suffix configuration incorporates enhanced diagnostic functions and fieldbus integration capability.
Field Installation Guidelines
- Align the AAT145-S50 module with the dedicated I/O baseplate slot guide rails and push firmly until fully engaged.
- Secure the retaining screws to ensure solid chassis grounding and prevent connector decoupling from panel vibration.
- Route all 4-20 mA current loop field wiring through separate low-voltage instrument conduits isolated from AC power conductors.
- Land signal cable shields onto the cabinet earth bus bar following single-point grounding rules.
- Maintain adequate convection clearance around the baseplate rack to operate within the 0 to 55 deg C ambient temperature limits.
