ESR Pollmeier GmbH - Servo Drive Technology

Servo Drives New Generation

Characteristics of the Servo Drives New Generation

Technical Specifications

Servo Drives for 230 V Mains Voltage (Size 1)

Order number BN 6771 BN 6772 BN 6773 BN 6774 *
Mains connection 230 V∼ ±10%, 50 .. 60 Hz
(85 .. 253 V with reduced/increased DC-bus voltage)
DC-bus voltage 320 V DC
Rated current (rms value) 0.8 A 2 A 4 A 6 A
Peak current (crest value) 3.4 A 8.5 A 17 A 25.5 A
For servo motors **
AC servo motors
Torque motors
Linear motors
up to 0.2 kW
up to 0.5 Nm

up to 30 N
up to 0.6 kW
up to 1.5 Nm
up to 9.2 Nm
up to 140 N
up to 1.3 kW
up to 3.5 Nm
up to 14 Nm
up to 420 N
up to 1.9 kW
up to 5.5 Nm
up to 34 Nm
up to 560 N
Switching frequency 8 or 16 kHz (selectable)
Dimensions w×h×d 70 × 195 × 200 mm (size 1)
3D CAD data Download

* BN 6774 (6 A device) servo drives may be operated up to a loading of 70% without restrictions. For a higher loading, the device must be installed next to a control cabinet fan or equipped with a sub-assembled fan.
** Rated power, rated torque, rated force

Servo Drives for 3×400/480 V Mains Voltage (Size 2 and 3)

Order number BN 6781 BN 6782 BN 6783 * BN 6785 BN 6787 *
Mains connection 3 × 400..480 V ±10%, 50 .. 60 Hz
(90 .. 528 V with reduced/increased DC-bus voltage)
DC-bus voltage 560/680 V DC
Rated current (rms value) 2 A 4 A 8 A 16 A 32 A
Peak current (crest value) 5.5 A 11 A 22 A 45 A 90 A
For servo motors **
AC servo motors
Torque motors
Linear motors
up to 0.8 kW
up to 3 Nm
up to 14 Nm
up to 60 N
up to 1.8 kW
up to 7 Nm
up to 35 Nm
up to 300 N
up to 4.2 kW
up to 17 Nm
up to 110 Nm
up to 1100 N
up to 8 kW
up to 35 Nm
up to 270 Nm
up to 2800 N
up to 16 kW
up to 70 Nm
up to 270 Nm
up to 2800 N
Switching frequency 8 or 16 kHz (selectable)
Dimensions w×h×d 70 × 275 × 200 mm (size 2) 190 × 275 × 227 mm (size 3)
3D CAD data Download

* BN 6783 (8 A device) and BN 6787 (32 A device) servo drives may be operated at a power circuit switching frequency of 8 kHz without restrictions. With 16 kHz, the rated current is reduced to 6 A or 16 A (rms) and the pulse current to 22 A or 45 A (crest value), respectively.
** Rated power, rated torque, rated force

➜ To the overview of all servo drive families.