ElmoMC SimplIQ Digital Servo Drives-Harmonica Installation Guide - Manual (Page 56)

Harmonica Installation Guide Technical Specifications
MAN-HARIG (Ver. 1.902)
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56
4.8. Feedback
The Harmonica can receive and process feedback input from diverse types of devices.
4.8.1. Feedback Supply Voltage
Feature Details
J3 (main encoder) supply voltage 5 V +5% @ 200 mA maximum
J2 (auxiliary encoder) supply voltage 5 V +5% @ 200 mA maximum
4.8.2. Incremental Encoder
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 31: Encoder Phase Diagram