ElmoMC AC Input Digital Servo Drives-Tuba - Manual (Page 69)

Tuba Installation Guide Technical Specifications
MAN-TUBIG (Ver. 1.502)
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69
4.9. Feedbacks
The Tuba can receive and process feedback input from diverse types of devices.
4.9.1. Feedback Supply Voltage
Feature Details
Main encoder supply voltage 5 V +5% @ 200 mA maximum
Auxiliary encoder supply voltage 5 V +5% @ 200 mA maximum
4.9.2. 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: 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: Encoder Phase Diagram