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The 1756-A17 is a standard 17-slot hardware backplane chassis within the ControlLogix product platform. It establishes the physical housing and backplane data routing layer for up to 17 individual automation modules. For mechanical installation inside industrial enclosures, the chassis framework incorporates integrated top and bottom mounting tabs designed for direct screw attachment to subpanels or backplates.
Distributes power to each of the modules in the chassis via the backplane
Slot guides and snap-in retention for easy and secure fit for any type of 1756 module
Slot fillers specifically designed for the standard or extreme environment chassis (optional)
The Allen Bradley 1756 ControlLogix controllers provide a robust and scalable control solution for industrial automation systems. A standard control engine with a development environment provides ease of use. Available with On-Machine models suitable for process, motion, discrete, and high availability applications. To anchor these modular system capabilities, the 1756-A17 functions as the structural backbone, providing a standard 17-slot hardware backplane chassis within the ControlLogix platform.
This chassis establishes the localized physical housing and structural alignment for up to 17 individual automation components, including processors, discrete or analog I/O modules, and fieldbus communication adapters. For high-fidelity data exchange between slots, the integrated multi-master backplane bus delivers high-speed routing capability, ensuring deterministic data distribution without the use of external routing cables.
The unit incorporates integrated top and bottom mounting tabs for direct screw attachment to industrial subpanels through its open-style physical frame. This rigid structural architecture maintains operational stability across an ambient working temperature range of 0 to +60 degrees Celsius and relative humidity up to 95% non-condensing, positioning the 1756-A17 as the definitive maximum-capacity frame for comprehensive, large-scale plant automation control racks.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen Bradley 1756-A17 ControlLogix 17 Slots Chassis Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Automotive Manufacturing Industry
Used in main body welding lines and final assembly shops to house primary PLCs, multi-channel Ethernet modules, and safety gateways, coordinating the synchronized operation of hundreds of industrial robots, conveyors, and field servo axes.
Oil & Gas Extraction Industry
Used in emergency shutdown systems on offshore drilling platforms or onshore gathering stations, incorporating redundant controllers and high-density analog input modules to monitor pipeline pressure, wellhead temperature, and toxic gas concentrations in real time.
Power Generation Industry
Used in power plant Balance of Plant control systems, ash handling, or desulfurization systems, providing high-density hardware slots to connect massive electrical protection relay signals and temperature measuring points.
Iron & Steel Metallurgy Industry
Used in blast furnace stockhouse batching systems or continuous steel rolling lines, configured with high-speed counter modules and fiber-optic network cards to precisely control billet advancing speed, shearing timing, and dynamic batching weights.
Pulp & Paper Manufacturing Industry
Used in the headbox and drying section control of high-speed paper machines, housing multiple dedicated motion control modules to achieve high-precision constant tension and speed synchronization across dozens of wire rollers and drying cylinders.
When using the 1756-A17 chassis, it features an open-style enclosure and must be housed inside an industrial control cabinet, with adequate ventilation clearance reserved to prevent thermal accumulation when the 17 slots are fully populated. During system configuration or field expansion, it is essential to calculate the total power consumption of all slotted modules via software to ensure it does not exceed the output current and rated power limits of the power supply module (such as the 1756-PA75).
Additionally, the metal frame and the dedicated grounding screw must be firmly bonded to the earth ground to effectively shield the high-speed backplane bus communication from severe industrial electromagnetic interference.
The 1756-A17 is a dedicated 17-slot standard chassis for the ControlLogix system. It provides physical housing for processors, I/O modules, and communication cards while routing vital system backplane buses. Within motion topologies, this chassis hosts control units (e.g., 1756-L7x/L8x) to dispatch synchronized CIP Motion instructions over industrial networks to field-mounted Kinetix 6000 servo drives (including 2094-BM01-S 400/460V, 9A Safe Torque Off axis modules).
It is a ControlLogix series 17-slot standard chassis manufactured by Rockwell Automation (Allen-Bradley).
How do modules exchange high-speed data between slots in the 1756-A17?
The chassis integrates an internal multi-master high-speed backplane bus (ControlBus). It connects with modules via physical pin connectors, achieving millisecond-level deterministic data routing between individual slots without any external wiring.
How should the 1756-A17 be mechanically installed?
It must be securely mounted horizontally to the metal backpanel inside an industrial control enclosure using its four integrated bolt holes and screws to ensure proper thermal convection and module cooling.
Which control modules can be inserted into the 1756-A17 chassis for operation?
It can accommodate various 1756 series controllers, digital and analog I/O cards, Ethernet communication modules, and specialty modules like counters.
Does the 1756-A17 chassis itself include an integrated power cord plug?
No, it does not have a power cord, and a dedicated chassis power supply module (such as the 1756-PA75) must be physically attached to its left side to provide power.
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