Firmware ≤ 02.00 - DMS 2.1 EN - 03/2011 L 135
8400 motec | Software Manual
I/O terminals
Digital terminals
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" response (Lenze setting) in C00586
for safety reasons!
• In order to prevent interference injections 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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