Servo drives

ESR offers servo drives for almost every field of application: From analog devices for AC or DC servo motors up to digital drives with integrated technology functions for AC servo motors and linear motors. Servo drives by ESR are valued because of their high quality and reliability.

This page presents a tabular overview of all servo drives. Detailed information on a specific device can be found on the pages of the individual drive families or in the data sheets.

Digital servo drives for AC servo motors

Servo drive family	Servo Drives New Generation	TrioDrive D/xS	MidiDrive D/xS
Design	compact	compact	compact
Mains connection	direct 230 V~ (WRI)* 3 × 400 .. 480 V~ (WRI)*	direct 230 V~ (WRI)*	direct 3 × 400 .. 480 V~ (WRI)*
Bus voltage	320 V DC or 560 .. 680 V DC	320 V DC	560 .. 680 V DC
Rated current	0.8 .. 32 A	0.8 .. 6 A	2 .. 32 A
Peak current (crest value)	3.4 .. 90 A	3.4 .. 25.5 A	5.6 .. 90 A
For AC servo motors	up to 85 Nm rated torque	up to 5.5 Nm rated torque	up to 70 Nm rated torque
Positioning control	optional	optional
Ethernet, Fieldbus	EtherCAT, CANopen, Profinet, CAN, Modbus/TCP, serial: RS485, RS232 (e. g. Modbus RTU), USB	EtherCAT, CANopen, Profibus-DP, CAN, Modbus/TCP, serial: RS485, RS232 (e. g. Modbus RTU)
Data Sheet	6770.250	6755.250

* (WRI) = wide range input 85..253 V~ or 3 × 85..528 V~, respectively

Analog servo drives for AC and DC servo motors

Servo drive family	TrioDrive A	MidiDrive A	UnoDrive
Design	compact	compact	compact / 19"
Mains connection	direct 230 V~ (WRI)*	direct 3 × 400 .. 480 V~ (WRI)*	via transformer 230 V~ / 3 × 400 V~ / 3 × 480 V~
Bus voltage	320 V DC	560 .. 680 V DC	40 V DC / 100 V DC output voltage
Rated current	2 .. 6 A	2 .. 8 A	6 .. 12 A
Peak current (crest value)	5.5 .. 17 A	5.5 .. 22 A	12 .. 24 A
Suitable for	AC servo motors up to 5.0 Nm rated torque	AC servo motors up to 17 Nm rated torque	DC servo motors up to 5.5 Nm rated torque
Data sheet	6650.250	6680.250	6540.250

* (WRI) = wide range input 80..253 V~ or 3 × 80..528 V~, respectively

Further characteristics can be found on the pages of the individual drive families.

The servo power modules TrioDrive C and MidiDrive C are described along with the multi-axis servo system.

Digital servo drives for AC servo motors

Servo drive family	TrioDrive D	MidiDrive D	MaxiDrive
Design	compact	compact	compact
Mains connection	direct 230 V~	direct 3 × 400 V~	direct 3 × 400 V~
Bus voltage	320 V DC	560 V DC	560 V DC
Rated current	2 .. 6 A	2 .. 8 A	2 .. 20 A
Peak current (crest value)	5.5 .. 17 A	5.5 .. 22 A	5.5 .. 56 A
For AC servo motors	up to 5.0 Nm rated torque	up to 17 Nm rated torque	up to 48 Nm rated torque
Positioning control	optional	optional	yes
Fieldbus	optional	optional	optional
Data sheet	6750.250	6730.250	6710.250

Analog servo drives for AC and DC servo motors

Servo drive family	TrioDrive	MidiDrive	DC Compact Drive
Design	compact / 19"	compact / 19"	compact
Mains connection	via transformer 230 V~ / 3 × 400 V~ / 3 × 480 V~	via transformer 3 × 400 V~ / 3 × 480 V~	direct 230 V~
Bus voltage	125 V DC	320 V DC	40 V DC output voltage
Rated current	5 .. 10 A	1.5 .. 12 A	4 A
Peak current (crest value)	15 .. 30 A	5 .. 30 A	8 A
Suitable for	AC servo motors up to 3.4 Nm rated torque	AC servo motors up to 12 Nm rated torque	DC servo motors up to 0.4 Nm rated torque
Data sheet	6646.250	6661.250	(not available as PDF)

Further characteristics can be found on the pages of the individual drive families.

The servo power modules TrioDrive C and MidiDrive C are described along with the multi-axis servo system.