Lenze 8400 TopLine - Manual (Page 379)

Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
379
7 I/O terminals
7.1 Digital input terminals
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7.1.1 Change function assignment
The internal processing function of the digital input terminals DI1/DI2 and DI6/DI7 can be
reconfigured in C00115 if necessary. In this way, these input terminals can alternatively be used as
frequency or counting inputs in order to implement the following functions:
• Detection of the input frequency
• Detection and processing of two unipolar input frequencies to one bipolar frequency
• Counting of input pulses
• Evaluation of the speed feedback (HTL encoder) for the motor control (speed-controlled
operation)
You can find detailed information on the respective function assignment in the following
subchapters:
 Using DI1(6) and DI2(7) as digital inputs ( 380)
 Using DI1(6) and DI2(7) as frequency inputs ( 381)
 Using DI1(6) as counting input ( 386)
C00115/1: Function assignment DI1 and DI2
C00115/2: Function assignment of DI6 and DI7
Function assignment
DI1 / DI6 DI2 / DI7
0 DI1(6)=In / DI2(7)=In Digital input Digital input
1 DI1(6)=FreqIn / DI2(7)=In Frequency input Digital input
2 DI1(6)&DI2(7)=FreqIn (2-track) Frequency input (2-track)
3 DI1(6)=FreqIn / DI2(7)=direction Frequency input
(speed)
Frequency input
(direction)
4 DI1(6)=CountIn / DI2(7)=In Count input Digital input

Note!
• In the Lenze setting of C00115 , the digital input terminals DI1/DI2 and DI6/DI7 have
been configured as "normal" digital inputs.
• The digital input terminals DI3 ... DI5 are basically designed as "normal" digital inputs.
• Very high pulse frequencies can be measured at the DI1/DI2 and DI6/DI7 input
terminals if the latter have been configured as frequency or counting inputs in
C00115 . Scanning is then carried out within less than μs instead of the otherwise
usual scanning rate of 1 kHz (1 ms).