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Function Description
WAGO-I/O-SYSTEM 750
750-636/000-x00 DC Drive Controller 24V/5A
Manual
Version 2.1.0
4.14 Maximum Pulse Frequency of the Incremental
Encoder
Common 24 V DC collector motors normally have a maximum speed of approx.
4,600 min
-1
. Common incremental encoders provide 1 to max. 10,000 pulses/rev.
Encoder inputs of the I/O module are designed to record max. 50,000 pulses/s.
Relative to a speed of 4,600 min-1 and 50,000 pulses per second, an incremental
encoder provides a maximum of 652 pulses/rev. Encoders with 512 pulses/sec.
normally meet the requirements of DC motor applications.
The following diagram illustrates the connection between speed and the maximum
admissible number of pulses/rev of the incremental encoder. In order not to create
an overload for the quadrature decoder/counter, it is essential that the value for the
incremental encoder is always below the characteristic.
Figure 36: Maximum Number of Pulses/Revolution
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