ElmoMC Gold Line Digital Servo Drives-Gold Whistle - Manual (Page 74)

Gold Whistle Installation Guide Technical Specifications
MAN-G-WHIIG (Ver. 1.208)
www.elmomc.com
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5.4. Feedbacks
5.4.1. Feedback Supply Voltage
The Gold Whistle has two feedback ports (Main and Auxiliary). The Gold Whistle 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 Whistle 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 PPS (Pulses Per Second))
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