Enclosure~less Wiring Solution for On-Machine Applications
Active/Passive Application Diagram
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1. Passive Distribution Boxes
Many styles to choose from. 4-, 6-, or 8-ports, top or side entry, with on-board, homerun
cable, or quick-disconnect connector.
2. Cordsets
Single- and Double-Ended Cordsets provide connection between field devices and the
ports of a distribution box or may be used to hardwire a device to a control panel or
distribution box.
3. Receptacles
Receptacles are connectors that mount in a fixed location (sensor or panel) and mate with
a molded cable.
4. Field Attachable Connectors
Used to complete the assembly of a single-ended cordset. Field attachables are available in
a variety of thread sizes and number of poles, straight and right-angle or to make cordset
repairs in the field.
5. DIN Valve Connectors
Are mainly used with solenoid valves in hydraulic and pneumatic applications. In addition,
these connectors are also used in electrical applications for pressure switches, filter
switches, limit switches and special sensors.
6. Splitters
Devices that provide the means of bringing two different sensor/actuator signals into a
single port of an ASB distribution box, thereby doubling the capacity of the box.
7. Fieldbus I/O Blocks
Have embedded communications protocol, e.g., DeviceNet, Profibus...) that allows them to
actively communicate with the network interface at the PLC.
8. Fieldbus I/O Modular Bus Systems
Are systems with bus-neutral I/O modules and communications adapters that allow the
designer to mix and match field bus and I/O hardware components as needed for the
application.
9. Bus Taps and Tees
Connect drop lines to the main trunk line or combine power and signal using a
hybrid cable.
10. Drop and Trunk Cordsets
When connecting multiple devices to a single communications trunk, the trunk is split with
a T-connector. The cable that connects the device to the main trunk is referred to as a
drop cable.
11. Terminating Resistors
Are placed at the end of a transmission line or daisy chain bus (such as in Devicenet),
designed to match impedance and hence minimize signal reflections.
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