The 1746-A13 is an I/O chassis manufactured by Allen-Bradley for 1746 I/O modules and belongs to the SLC 500 product family. The I/O chassis has dimensions of 171 x 502 x 145 millimeters and includes 13 slots allowing the users to customize the system. The unit has a total weight of 1.9 Kilograms or 4.2 pounds. The 1746-A13 module has a back panel mounting. Moreover, 4, 7, and 10 slot I/O chassis are also available and buyers have an option to choose the size of the chassis as per the modular hardware component requirements. The chassis can contain a processor or an I/O module and an I/O adapter module. For increasing the system capabilities, users can connect up to 3 chassis using interconnect cables. This will allow the users to connect up to 30 module slots that can connect with a processor to the I/O adapter in the leftmost slot of this 13-slot chassis.

Moreover, the 1746-A13 includes LED indicators to provide a quick status of power. The maximum load uptime of the chassis ranges from 20 milliseconds to 3 seconds (depending on the current load). The module utilizes a 120 to 240 Volt AC power supply to be selected through the use of a jumper setting. The operating conditions of the module should remain in the temperature range between zero (0) to 60 degrees Celsius or 34 to 140 degrees Fahrenheit. The optimum temperature for storing the module should be -40 to 85 degrees Celsius. The standard range of humidity should be between 5 to 95% in a non-condensing environment.

When preparing to install the Allen-Bradley 1746-A13, make sure to have a phillips screw, as well as a star washer, for the chassis mounting tab. This product has eight (8) mounting tabs. Additionally, be sure to have a phillips screwdriver and a drill. As to note, the support panel for this product's power supply has screws and is located on the left end of the panel. The center and right end panels are held together and in position with a latch. These panels do not require screws to put together. Look at the Allen-Bradley 1746-A13 manual for the minimum spacing requirements. 

When installing the Allen-Bradley 1746-A13, the first thing to do is to drill holes into the enclosure's back panel. These holes are for the mounting tabs. Then, install the phillips screws and star washers for the top mounting tabs. Slide the 1746-A13's chassis over the phillips screws and star washers, then proceed to tighten the screws. Leave the far left and right tabs open for the grounding process. Finally, install the remaining screws and washers and leave both tabs open on the four-slot chassis. The physical dimensions of the Allen-Bradley 1746-A13 with the tabs are 50.2 cm x 17.1 cm x 14.5 cm. These dimensions are equivalent to 20.1 in. x 6.8 in. x 5.8 in.. The approximate weight of the Allen-Bradley 1746-A13 without the modules is 1.9 kg, or 4.2 pounds. The minimum backplane current of this product is 5.1 volts direct current at a frequency of ten (10) amperes and24 volts direct current at a frequency of 2.88 amperes. This product has thirteen (13) module slots.