Lenze E84AVHC Series - 6.1.1.2 Using DI1(6) and DI2(7) as frequency inputs

Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010 L 221
8400 HighLine | Parameter setting & configuration
I/O terminals
Digital input terminals
6.1.1.2 Using DI1(6) and DI2(7) as frequency inputs
General information on use as frequency input
The frequency inputs are used for detecting HTL encoders with any number of increments
as well as single-track and two-track signals. Single-track signals can be evaluated with or
without rotation direction signals.
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!
 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
= 100 kHz
– DI6/DI7: f
max
= 10 kHz
• If the encoder signal is used as an actual speed value:
Number of encoder pulses / revolution
≤ 8192!
Input frequency
1500 rpm
60 s
-------------------------
512 pulse × 12800 pulse/s 12.8 kHz===
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