Allen-Bradley 1746-IH16 SLC 500 Series C Input Module With satisfying service

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Product reference      1746-IH16

The 1746-IH16 SLC 500 General Purpose 125V DC Input Module, is a current sinking digital input module by Allen-Bradley which comes with a Removable Terminal Block and can be installed on any free 1746 I/O chassis slot. It is an input module with 16 current sinking 125V DC inputs and 16 points per common. It operational voltage ranges between 90 and 146V DC with various numbers of points powered ON simultaneously at various corresponding voltages. Six inputs points are powered ON simultaneously at 146V DC, with 12 points at 146V DC, with 14 points at 132V DC, and with 16 points at 125V DC. It draws a backplane current of 0.085A at 5.0V DC and the input signal is delayed at 9ms for both the OFF and ON state. 
The 1746-IH16 has a maximum OFF state drop voltage of 20V DC and a current leakage of 0.8mA in its OFF state. It nominal input current per point is 2.15mA at 125V DC and 2.25mA at 132V DC and the module has an overall heat dissipation of 5.17W. It is stored at a temperature ranging between -40 and 85 °C (-40 and 185 °F) and it operates well in a temperature range of 0-60 °C (32-140 °F) at 5-95% non-condensing humidity condition. The 1746-IH16 has an operational shock rating of 30G with an operational vibration of 2.5G at 57-200 Hertz and a NEMA standard ICS 2-230-rated Noise immunity. It offers circuit isolation between the inputs and control logic and is C-UL and CSA-certified.

The application for 1746-IH16 is general purpose 125V Dc inputs. The operating voltage for 1746IH16 is 90...146V DC sink (source load). 1746-IH16 houses 16 inputs.

Distributed Systems More complex systems can use: distributed I/O. multiple controllers joined across networks. I/O in multiple platforms that are distributed in many locations and connected over multiple I/O links. Publication 1747-SG001D-EN-P — January 2009 I/O Modules 5 Choose the processor module with the on-board communication ports you need. You optionally add modules to provide additional communication ports for the processor. For I/O in locations remote from the processor, you can choose between a ControlNet, DeviceNet, or Univeral I/O link. A communication interface module is required in both the local and remote chassis. Depending upon the communication ports available on your particular SLC control system, you can select operator interfaces that are compatible.

Laying Out the System Lay out the system by determining the amount of I/O necessary, the network configurations, and the placement of components in each location. Decide at this time whether each chassis will have it’s own controller or a networked solution. SLC 500 processors are available with a large range of memory sizes (1 K through 64 K) and can control up to 4096 input and 4096 output signals. All modular processors except the SLC 5/01 processor are capable of controlling remotely located I/O. By adding an I/O scanner module, you can use these processors to control/monitor these remotely located I/O across ControlNet, DeviceNet, and Universal Remote I/O links. SLC 500 processors are single-slot modules that you place into the left-most slot of a 1746 I/O chassis. For I/O in a location remote from the processor, the I/O adapter is a single-slot module that you place in the left-most slot of the I/O chassis. SLC 500 modular systems provide separate power supplies which must be mounted directly on the left end of the 1746 I/O chassis. The 1746 I/O chassis are designed for back-panel mounting and available in sizes of 4, 7, 10, or 13 module slots. The 1746 I/O modules are available in densities up to a maximum of 32 channels per module. 

Communications Evaluate what communications need to occur. Knowing your communications requirements will help you determine which processor and which communications devices your application might require. An SLC processor communicates across the 1746 backplane to 1746 I/O modules in the same chassis in which the processor resides. Various models of SLC processors have various on-board ports for communication with other processors or computers. Also, separate modules are available to provide additional communication ports for communication with other processors, computers, and remotely located I/O. Each processor has one or two built-in ports for either EtherNet/IP, DH+, DH-485, or RS-232 (DF1, ASCII, or DH-485 protocol) communication. In addition to the on-board ports available with SLC processors, you have the option of providing another communication port for an SLC processor by adding a communication module. Adapter modules for 1746 I/O are available for ControlNet and Universal Remote I/O links. An I/O adapter module in a chassis with I/O modules interfaces the I/O modules with the I/O link for communication with a scanner port for a processor at another location.

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