4 encoder with htl level at di1/di2, Encoder with htl level at di1/di2, 5motor control (mctrl) – Lenze 8400 User Manual
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Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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5
Motor control (MCTRL)
5.11
Encoder/feedback system
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5.11.4
Encoder with HTL level at DI1/DI2
Low speeds (except for edge counting)
For the first three methods (
= 0, 1, or 2), the minimum speed that can be measured depends
on the encoder resolution.
The quantisation error
• is independent of the encoder resolution,
• exclusively depends on the encoder quality (encoder errors).
• at least amounts to 0.5 rpm.
Internal arithmetic operations automatically maintain the minimally required value of the scanning
time in order to achieve maximum dynamics.
Note!
At the digital terminals DI1 and DI2, only encoders with HTL level can be used.
In spite of the selected operating mode without encoder feedback, the actual speed
) is calculated if an encoder is connected and "1: Encoder signal FrqIn12" is
selected in
Encoder
resolution
(Number of
increments)
Min. measurable speed in [rpm]
8
16
16
8
32
4
64
2
128
1
256
0.5
≥ 512
0.25