Danfoss vlt aqua Design Manual page 147

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VLT AQUA Drive Design Guide
5.3.12 Control Cable Length
Digital in / digital out
Dependent on what kind of electronics is being used, the maximum cable impedance may be calculated based on the 4 kΩ adjustable frequency drive
input impedance.
Analog in / analog out
Again the electronics used puts a limitation on the cable length.
NOTE!
Noise is always a factor to be reckoned with.
5.3.13 Electrical Installation, Control Cables
Figure 5.22: Terminal 37: Safe Stop input available with Safe Stop Function only!
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MG.20.N5.22 - VLT is a registered Danfoss trademark
5 How to Install
5
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