1 Outline
1-2
1.1 Σ-V Large-Capacity Multi-Winding Drive Unit, SERVOPACKs
and Converters
The Σ-V-series servo drives were designed for applications that require high-speed, high-frequency position-
ing. They can quickly maximize machine performance to help improve productivity.
1.2 System Configuration Diagram
A multi-winding drive system consists of a multi-winding drive unit, SERVOPACKs, converters, and a multi-winding
servomotor.
The functions of the multi-winding drive unit, SERVOPACKs, and converters are described below.
• Multi-winding Drive Unit
The multi-winding drive unit is connected to the encoder of a servomotor and it performs position, speed, or torque
control.
It controls the SERVOPACKs through local communications cables.
• SERVOPACKs and Converters
The SERVOPACKs and converters drive the servomotor based on references they receive from the multi-winding drive
unit.
The following figure shows a system configuration example.
Type of References
Analog voltage or
pulse train references
SERVOPACK
Regenerative
resistor unit
Dynamic brake unit
Converter
Multi-winding
servomotor
Multi-winding
drive unit
Control power supply
Host controller
Encoder cable
Local
communications
cable
Local
communications
cable
Motor cable
Motor
cable
Motor fan
power supply
Regenerative
resistor unit
Control power supply and
main circuit power supply
Dynamic brake unit
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