Allen Bradley 1756-A17The Allen Bradley 1756-A17 is a ControlLogix component. This is a 17-slot chassis that is used to mount ControlLogix modules including processors, I/O modules, specialty modules and encompass partner modules.

The 1756-A17 provides module housing including the necessary backplane connection to allow internal module connection and distribution of bus power through the embedded electronic circuitry and provided mounting slots to the chassis. It has a power consumption of 1.5 A @ 1.2VDC; 4A/4A @ 3.3 VDC; 15 A/6 A @ 15 A/6 A and 2.8 A/2.8 A @ 24VDC.

The 1756-A17 supports horizontal mounting only and requires a minimum cabinet size or available space of 76.2 x 91.4 x 20.3 cm (30 x 36 x 8 in.). The provided 10 mounting tabs permit direct panel mounting to the enclosure subpanel for convenient and fast installation. This chassis weighs 2.20 kg (4.8 lb).

When mounting 1756-A17 chassis with nearby ControlLogix chassis, specific space requirements are 10.2 cm (4.0 in.) plus the width of the power supply (left side), 7.7 cm (3.0 in.) plus the width of the power supply (right side), 15.3 cm (6.0 in.) Top clearance and 5.1 cm (2.0 in.) bottom clearance.

The 1756-A17 are available in 3 chassis revisions, specifically, series A, B and C. Series C specifically offers improved slot guidelines, ventilation, tougher mounting tabs, extra holes for mounting tabs and additional ground screw for termination to the panel grounding.

The 1756-A17 Standard Chassis includes inherent time-stamping capabilities for SOE applications. The chassis backplane distributes power to each of the modules within the chassis by providing a high-speed communication path between modules. It requires a Bulletin 1492 wiring IFM or an RTB to connect all the field-side wiring. The 1756-A17 Standard Chassis provides easy maintenance with the RIUP feature. For preventing replacement errors, it also offers electronic keying. In case of any system or field side failure, its comprehensive diagnostic feature helps identify the fault. It is compact, cost-effective, and easily compatible with items such as PanelView operator.

 

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TCI Supply is not an authorized Allen Bradley Distributor

Technical Data .pdf

 

Manufacturer Rockwell Automation
Brand Allen-Bradley
Operating Temperature, Series C -25…+60 °C (-13…+140 °F)
Operating Temperature, Series B 0°C to +60°C (+32°F to +140°F)
No. of mounting tabs Ten (10)
Orientation Horizontal
Backplane Current @ 24VDC 2.8 A/2.8 A
Backplane Current @ 5.1VDC 15 A/6 A
Backplane Current @ 3.3VDC 4A/4 A
Backplane Current @ 1.2VDC 1.5 A
No. of slots Seventeen (17) slots
Storage Temperature -40°C to +85°C (-40°F to +185°F)
Relative Humidity 5 to 95% (without condensation)
Part Number/Catalog No. 1756-A17
Series ControlLogix
Module Type Chassis
Mounting Panel Mount
Wire size Functional Earth Ground – 8.3 mm2 (8 AWG) solid or stranded copper wire rated at 90 °C (194 °F) or greater Protective Earth Ground – 2.1 mm2 (14 AWG) solid or stranded copper wire rated at 90 °C (194 °F) or greater
Slots 17
Power Dissipation (Max) 6 Watts
Dimensions 30 x 36 x 8 inches
Weight 4.8 pounds (2.2 kilograms)
Enclosure Open
Backplane Current (5 Volts DC) 10 amps
Backplane Current (24 Volts DC) 2.8 Amps

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