Lenze 8400 motec - Manual (Page 186)

6 I/O terminals
6.1 Digital terminals
186 Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05
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General information on using the input terminals as frequency inputs
The frequency inputs serve to detect HTL encoders with any number of increments and single-track
and two-track signals. Single-track signals can be evaluated with or without rotation signal.
Function assignment 1: DI1=FreqIn / DI2=In
This setting in
C00115/1 configures the input terminal DI1 as frequency input. The input terminal
DI2 remains configured as "standard" digital input.
Function assignment 2: DI1&DI2=FreqIn (2-track)
This setting in
C00115/1 serves to connect a two-track encoder to the terminals DI1/DI2.

Danger!
• For (open circuit) monitoring of the encoder, it is recommended to set the "Fault" re-
sponse (Lenze setting) in C00586 for safety reasons!
• To avoid interference when using an encoder, only use shielded motor and encoder
cables.
• Make sure that the maximum input frequency of 10 kHz at the frequency inputs is not
exceeded when the V/f control (VFCplus + encoder) is used.
• When evaluating a single-track encoder, make sure that the sign has been selected
correctly. Otherwise, there is a risk that the motor may overspeed.
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