Yokogawa AS-S9981DE-01 Backplane Board
Configured for high-density I/O module interconnectivity in Yokogawa control station subracks, the Yokogawa AS-S9981DE-01 (AS-S9981DE Backplane Board) provides direct physical/electrical execution. It serves as the primary 10-slot backplane bus structure, supplying internal logic power distribution and high-speed data routing between installed controller processors, power supply modules, and field interface cards.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AS-S9981DE-01 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.59 kg (3.50 lbs) |
| Dimensions | 430 mm x 40 mm x 180 mm |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | Passive backplane bus |
| Module Type | 10-Slot Backplane Board |
| Slot Capacity | 10 module slots |
| Bus Architecture | Redundant system power and communication backplane bus |
| Mounting Type | 19-inch rack / panel mount |
Channel-to-Channel Isolation and DCS Backplane Integrity
The AS-S9981DE-01 provides the physical and electrical backbone required to preserve signal integrity across high-density I/O racks. Multi-layer printed circuit traces maintain distinct isolation zones between high-frequency digital communication buses and internal power distribution planes, preventing cross-talk suppression failures and ground loops. When supporting multi-channel analog cards processing 4-20 mA HART loop protocol signals or thermocouple inputs requiring cold junction compensation (CJC), the backplane trace impedance remains strictly matched across all 10 slots to ensure deterministic logic scanning and noise-free data transport.
Frequently Asked Questions
Q: Can individual I/O modules installed on the AS-S9981DE-01 be hot-swapped during active system operation?
A: Hot-swapping depends on the specific I/O module inserted into the slot. The AS-S9981DE-01 backplane connector pin staging supports live insertion and removal, provided the inserted module and control node architecture support online replacement.
Q: How is power redundancy delivered across the AS-S9981DE-01 backplane?
A: The backplane contains dual parallel power rails that accept input from redundant power supply modules, ensuring continuous bus power delivery if a single power supply unit fails.
Field Installation Guidelines
- Ensure all incoming AC/DC system power feeds to the subrack frame are completely de-energized before mounting the AS-S9981DE-01.
- Align the backplane board within the 19-inch subrack enclosure or mounting panel, using all factory-designated chassis screw points.
- Fasten mounting screws securely to ensure full frame ground connection across the metal chassis backplate.
- Inspect multi-pin slot connectors for debris or bent pins prior to inserting controller and I/O cards.
- Connect the main frame functional earth (FE) terminal directly to the cabinet ground bar using a short, heavy-gauge copper strap (minimum 2.0 mm2).
Yokogawa AS-S9981DE-01 Backplane Board
Yokogawa AS-S9981DE-01 Backplane Board
Configured for high-density I/O module interconnectivity in Yokogawa control station subracks, the Yokogawa AS-S9981DE-01 (AS-S9981DE Backplane Board) provides direct physical/electrical execution. It serves as the primary 10-slot backplane bus structure, supplying internal logic power distribution and high-speed data routing between installed controller processors, power supply modules, and field interface cards.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AS-S9981DE-01 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.59 kg (3.50 lbs) |
| Dimensions | 430 mm x 40 mm x 180 mm |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | Passive backplane bus |
| Module Type | 10-Slot Backplane Board |
| Slot Capacity | 10 module slots |
| Bus Architecture | Redundant system power and communication backplane bus |
| Mounting Type | 19-inch rack / panel mount |
Channel-to-Channel Isolation and DCS Backplane Integrity
The AS-S9981DE-01 provides the physical and electrical backbone required to preserve signal integrity across high-density I/O racks. Multi-layer printed circuit traces maintain distinct isolation zones between high-frequency digital communication buses and internal power distribution planes, preventing cross-talk suppression failures and ground loops. When supporting multi-channel analog cards processing 4-20 mA HART loop protocol signals or thermocouple inputs requiring cold junction compensation (CJC), the backplane trace impedance remains strictly matched across all 10 slots to ensure deterministic logic scanning and noise-free data transport.
Frequently Asked Questions
Q: Can individual I/O modules installed on the AS-S9981DE-01 be hot-swapped during active system operation?
A: Hot-swapping depends on the specific I/O module inserted into the slot. The AS-S9981DE-01 backplane connector pin staging supports live insertion and removal, provided the inserted module and control node architecture support online replacement.
Q: How is power redundancy delivered across the AS-S9981DE-01 backplane?
A: The backplane contains dual parallel power rails that accept input from redundant power supply modules, ensuring continuous bus power delivery if a single power supply unit fails.
Field Installation Guidelines
- Ensure all incoming AC/DC system power feeds to the subrack frame are completely de-energized before mounting the AS-S9981DE-01.
- Align the backplane board within the 19-inch subrack enclosure or mounting panel, using all factory-designated chassis screw points.
- Fasten mounting screws securely to ensure full frame ground connection across the metal chassis backplate.
- Inspect multi-pin slot connectors for debris or bent pins prior to inserting controller and I/O cards.
- Connect the main frame functional earth (FE) terminal directly to the cabinet ground bar using a short, heavy-gauge copper strap (minimum 2.0 mm2).
