Feedbacks, Feedback supply voltage, Main feedback options – ElmoMC SimplIQ Digital Servo Drives-Guitar Installation Guide User Manual
Page 67: Incremental encoder input
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Guitar Installation Guide
Technical Specifications
MAN-GUIIG (Ver. 1.601)
67
4.8. Feedbacks
4.8.1.
Feedback Supply Voltage
The Guitar has two feedback ports (Main and Auxiliary). The Guitar supplies voltage only to the
main feedback device and to the auxiliary feedback device if needed.
Feature
Details
Main encoder supply voltage
5 V ±5% @ 200 mA maximum
Auxiliary encoder supply voltage
5 V ±5% @ 200 mA maximum
4.8.2.
Main Feedback Options
The Guitar can receive and process feedback input from diverse types of devices.
4.8.2.1.
Incremental Encoder Input
Feature
Details
Encoder format
•
A, B and Index
•
Differential
•
Quadrature
Interface
RS-422
Input resistance
Differential: 120 Ω
Maximum incremental encoder frequency
Maximum absolute: 5 MHz pulses
Minimum quadrature input period (P
IN
)
112 nsec
Minimum quadrature input high/low period (P
HL
)
56 nsec
Minimum quadrature phase period (P
PH
)
28 nsec
Maximum encoder input voltage range
Common mode: ±7 V
Differential mode: ±7 V
Figure 34: Main Feedback - Encoder Phase Diagram