Using Di1(6) And Di2(7) As Frequency Inputs - Lenze L-force HighLine C 8400 Series Reference Manual

8400 HighLine C | Reference manual
I/O terminals
Digital input terminals
6.1.1.2

Using DI1(6) and DI2(7) 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.

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
– DI6/DI7: f
• If the encoder signal is used as an actual speed value:
Number of encoder pulses / revolution
Example of DI6/DI7 (in accordance with the preceding 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
encoder position. Detailed information on this topic is provided in the
the encoder position of the DI1/DI2 frequency
314
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= 100 kHz
max
= 10 kHz
max
1500 rpm
Input frequency
------------------------ -
=
60 s
06.00.00, the
L
(from version 11.00.00:
≤
8192!
× 512 pulse 12800 pulse/s
=
LS_DigitalInput system block can also provide the
input".
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011
f = 200 kHz)
max
12.8 kHz
=
"Output of
( 326)