Fault Protection; System Architecture - Elmo Cello Installation Manual

Cello Installation Guide
MAN-CELIG (Ver. 1.5)
2.2.7

Fault Protection

The Cello 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

I/Os
Protection
Communication
RS 232 and CANopen
Controller
PWM
Current
Feedback
Power Stage
Figure 2-1: Cello System Block Diagram
Tachometer
or
Potentiometer
or
Analog
Encoder
or
Resolver
or
Incremental
Encoder
Auxiliary
Power
24 VDC
Supply
Auxiliary
Encoder
Incremental Encoder
Buffered Output
or
Emulated Output
Introduction
2-3