Topic: System Design

Cabling best practices

The impact of electrical noise in a system is greatly reduced by following a few basic practices:Signal cabling should be 22 AWG, shielded twisted pairs. Provide adequate strain relief for all cables. Minimum cable bend radius = 4 x cable diameter. Cut the shield at the I/O device end, leave floating. Connect the shield at …

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Basic I/O operation

Design variations between products Sinking I/O Sinking: A sinking device provides a path for the current to ground. Terms used to describe sinking devices include NPN, Open Collector, Normally High, and IEC Negative Logic. Sinking input Sinking output Sourcing I/O Sourcing :A sourcing device provides the power or a positive potential to an I/O point. …

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Selecting stepper motor stack size

The capabilities of the different stack length motors are often confusing to people specifying them and designing them into systems.  The best way to think of the capabilities of the different stack lengths of a particular frame size is to think of the trade-offs.  The smaller MDrive stack length has lower torque that persists to …

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Lexium MDrive Thermal Management

Since there are so many variables affecting MDrive running temperature, it is difficult if not impossible to accurately predict thermal performance in a particular application.  For this reason, the Lexium MDrive and many other servo and stepper drives are designed so that they can produce more power than they can handle from a thermal point …

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