ElmoMC SimplIQ Digital Servo Drives-Harmonica Installation Guide - Manual (Page 12)

Harmonica Installation Guide Introduction
MAN-HARIG (Ver. 1.902)
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12
• Tachometer and Potentiometer
• Two inputs for Tachometer Feedback:
 Up to ± 50 VDC
 Up to ±20 VDC
• Potentiometer Feedback:
 0 to 5 V voltage range
 Resistance: 100 Ω to 1000 Ω
• Elmo drives provide supply voltage for all the feedback options.
2.2.7. Fault Protection
The Harmonica includes built-in protection against possible fault conditions, including:
• Software error handling
• Status reporting for a large number of possible fault conditions
• Protection against conditions such as excessive temperature, under/over voltage, loss of
commutation signal, short circuits between the motor power outputs and between each
output and power input/return
• Recovery from loss of commutation signals and from communication errors
2.3. System Architecture
PWM
Controller
Communication
RS 232 and CANopen
Power Stage
Protection Current
Feedback
Main
Encoder
SMPS
24 VDC
I/Os
Emulated
Output
Resolver
Analog
Encoder
Auxiliary
Encoder
or
or
Figure 1: Harmonica System Block Diagram