Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011 L 259
8400 StateLine C | Reference manual
I/O terminals
Digital terminals
6.1.1.2 Using DI1 and DI2 as frequency inputs
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.
Example of DI1/DI2 (according to the previous note):
Number of encoder increments: 512 pulses / motor revolution
Reference speed (C00011): 1500 rpm
Speed setpoint: 100 %
Result:
The speed or the number of increments is too high!
Tip!
From version 06.00.00, the LS_DigitalInput
system block can also provide the
encoder position. Detailed information on this topic is provided in the "Output of
the encoder position of the DI1/DI2 frequency input". ( 268)
Note!
• Make sure that, when motor control with speed feedback is in use, the
maximum input frequency of the respective input terminal is not exceeded.
– DI1/DI2: f
max
= 10 kHz
• If the encoder signal is used as an actual speed value:
Number of encoder pulses / revolution
≤ 8192!
To Next Page
Loading...
