2.1.2
RFC-A mode
Sensorless mode provides closed loop control without the need for position feedback by using
current, voltages and key operating motor parameters to estimate the motor speed. It can eliminate
instability traditionally associated with open loop control such as operating large motors with light
loads at low frequencies.
3
Options
Table 3-1 System Integration (SI) option module identification
Type
Fieldbus
Automation
(I/O expansion)
Unidrive M200/201 Control Quick Start Guide
Issue Number: 2
Option module
Color
Name
Purple
SI-PROFIBUS
Medium
SI-DeviceNet
Grey
Light Grey
SI-CANopen
Beige
SI-Ethernet
Brown Red
SI-EtherCAT
Orange
SI-I/O
Further details
See relevant option
module User Guide
7