Setup
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maxon motor control
3-16 Document ID: rel4734 ESCON Servo Controller
Edition: November 2014 ESCON Module 50/5 Hardware Reference
© 2014 maxon motor. Subject to change without prior notice.
3.3.3 Encoder
Best practice
• Differential signals offer good resistance against electrical interference. Therefore we recommend
using a differential scheme. Nevertheless, the controller supports both schemes – differential and
single-ended (unsymmetrical).
• The controller does not require an index impulse (Ch I, Ch I\).
• For best performance, we strongly recommend using encoders with a line driver. Otherwise,
speed limitations may apply due to slow switching edges.
Figure 3-5 Encoder Input Circuit Ch A “Differential” (analogously valid also for Ch B)
Differential
Min. differential input voltage ±200 mV
Max. input voltage +12 VDC/–12 VDC
Line receiver (internal) EIA RS422 standard
Max. input frequency 1 MHz
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