Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011 L 221
8400 StateLine C | Reference manual
Motor control (MCTRL)
Encoder/feedback system
5.10.3 Encoder with HTL level at DI1/DI2
Low speeds (except for edge counting)
For the first method (C00496
= 1), 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.
For a maximum dynamic performance, the scan time is automatically kept at the
minimum value required through internal arithmetic operations.
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 value (C00051
) is calculated if an encoder is connected and "1: Encoder
signal FrqIn12" is selected in C00495
.
Encoder
resolution
(Number of
increments)
Min. measurable speed in [rpm]
8 16
16 8
32 4
64 2
128 1
256 0.5
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