PLC Racks | Schneider Electric AS-H827-209
The Schneider Electric AS-H827-209 is an 11-slot, 27-inch primary housing backplane chassis designed for legacy Modicon 984 and 800 Series Programmable Logic Controller (PLC) systems. It serves as the physical chassis and high-speed backplane backbone required to house a central CPU, power supply unit, and compatible expansion I/O modules within a unified local assembly.
System Bus Interconnect and Slot Architecture
The chassis features 11 module slots with an integrated System Bus (SYSBUS) backplane assembly. The SYSBUS routes power distribution, control signaling, and parallel data transfer across installed card positions. The primary slots accommodate the main controller module and power supply, while remaining slots support high-density 800 Series discrete, analog, and specialty I/O modules.
Mainframe Configuration vs Remote Primary Housings
Unlike remote drop housings (such as the AS-H827-103), the AS-H827-209 is wired specifically as a mainframe primary housing. Its internal backplane traces include dedicated CPU signal paths and system bus routing required for local PLC operations. This structural design ensures deterministic module scanning and communication between the central processor and local I/O cards without requiring additional drop adapters.
System Specifications
| Parameter | Specification |
|---|---|
| Model | AS-H827-209 |
| Brand | Schneider Electric (Modicon) |
| Product Type | PLC Racks |
| System Compatibility | Modicon 984 / 800 Series |
| Housing Configuration | Mainframe Primary Housing |
| Backplane Bus | System Bus (SYSBUS) |
| Slot Capacity | 11 Slots (27-inch chassis) |
| Mounting Type | Industrial Panel Mount |
| Physical Dimensions | 27.0 in length (approx. 68.6 cm) |
| Approximate Weight | 18.0 lbs (approx. 8.17 kg) |
Frequently Asked Questions
Q: What is the functional difference between the AS-H827-209 and the AS-H827-103 housing? A: The AS-H827-209 is designed as a mainframe primary housing for hosting central PLC processors and local modules, whereas the AS-H827-103 is configured specifically for remote I/O drop applications.
Q: Can 800 Series I/O modules be installed directly into the AS-H827-209 backplane?A: Yes, the 11-slot backplane supports standard Modicon 800 Series discrete and analog I/O modules alongside compatible power supplies and central controllers.
PLC Racks | Schneider Electric AS-H827-209
PLC Racks | Schneider Electric AS-H827-209
The Schneider Electric AS-H827-209 is an 11-slot, 27-inch primary housing backplane chassis designed for legacy Modicon 984 and 800 Series Programmable Logic Controller (PLC) systems. It serves as the physical chassis and high-speed backplane backbone required to house a central CPU, power supply unit, and compatible expansion I/O modules within a unified local assembly.
System Bus Interconnect and Slot Architecture
The chassis features 11 module slots with an integrated System Bus (SYSBUS) backplane assembly. The SYSBUS routes power distribution, control signaling, and parallel data transfer across installed card positions. The primary slots accommodate the main controller module and power supply, while remaining slots support high-density 800 Series discrete, analog, and specialty I/O modules.
Mainframe Configuration vs Remote Primary Housings
Unlike remote drop housings (such as the AS-H827-103), the AS-H827-209 is wired specifically as a mainframe primary housing. Its internal backplane traces include dedicated CPU signal paths and system bus routing required for local PLC operations. This structural design ensures deterministic module scanning and communication between the central processor and local I/O cards without requiring additional drop adapters.
System Specifications
| Parameter | Specification |
|---|---|
| Model | AS-H827-209 |
| Brand | Schneider Electric (Modicon) |
| Product Type | PLC Racks |
| System Compatibility | Modicon 984 / 800 Series |
| Housing Configuration | Mainframe Primary Housing |
| Backplane Bus | System Bus (SYSBUS) |
| Slot Capacity | 11 Slots (27-inch chassis) |
| Mounting Type | Industrial Panel Mount |
| Physical Dimensions | 27.0 in length (approx. 68.6 cm) |
| Approximate Weight | 18.0 lbs (approx. 8.17 kg) |
Frequently Asked Questions
Q: What is the functional difference between the AS-H827-209 and the AS-H827-103 housing? A: The AS-H827-209 is designed as a mainframe primary housing for hosting central PLC processors and local modules, whereas the AS-H827-103 is configured specifically for remote I/O drop applications.
Q: Can 800 Series I/O modules be installed directly into the AS-H827-209 backplane?A: Yes, the 11-slot backplane supports standard Modicon 800 Series discrete and analog I/O modules alongside compatible power supplies and central controllers.
