ElmoMC Gold Line Digital Servo Drives-Gold Bell - Manual (Page 75)

Gold Bell Installation Guide Technical Specifications
MAN-G-BELIG (Ver. 1.004)
www.elmomc.com
75
5.4. Feedbacks
5.4.1. Feedback Supply Voltage
The Gold Bell has two feedback ports (Main and Auxiliary). The Gold Bell supplies voltage only
to the main feedback device and to the auxiliary feedback device if needed.
Feature Details
Encoder supply voltage 5 V ± 5% @ 2 x 200 mA (maximum)
5.4.2. Feedback Options
The Gold Bell can receive and process feedback input from diverse types of devices.
5.4.2.1. 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: 75 Megacounts per
second (18 MHz on A/B)
Minimum quadrature input period (PIN) 53 nsec
Minimum quadrature input high/low period
(PHL) 26 nsec
Minimum quadrature phase period (PPH) 13 nsec
Maximum encoder input voltage range Common mode: ± 7 V
Differential mode: ± 7 V
Figure 35: Main Feedback - Encoder Phase Diagram