ElmoMC SimplIQ Digital Servo Drives-Bell Installation Guide - Manual (Page 50)

Bell Installation Guide Bell Technical Specifications
MAN-BELIG (Ver. 1.302)
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50
Table of Contents
4.5. Feedbacks
4.5.1. Feedback Supply Voltage
The Bell has two feedback ports (Main and Auxiliary). The drives supply voltage only to the
main feedback device. The user must provide a separate power supply for auxiliary feedback
devices if needed.
Feature Details
Main encoder supply voltage 5 V +5% @ 200 mA maximum
4.5.2. Main Feedback Options
4.5.2.1. 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: 10 MHz pulses
Minimum quadrature input period (P
IN
) 100 nsec
Minimum quadrature input high/low period (P
HL
) 25 nsec
Minimum quadrature phase period (P
PH
) 25 nsec
Maximum encoder input voltage range Common mode: ±7 V
Differential mode: ±7 V
Figure 23: Main Feedback - Encoder Phase Diagram