Servo Drives New Generation
Characteristics of the Servo Drives New Generation
- Digital servo drives for AC servo motors and direct drives (torque motors, linear motors)
- Compact devices for control cabinet installation, complete with built-in power supply for direct connection to 230 V AC (size 1) or 3×400/480 V AC (size 2 and 3) (wide-range inputs)
- Integrated safety system, wear-free, two-channel (PL e according to ISO 13849-1 and SIL 3 according to IEC 61800-2)
- Design conforms to EMC requirements (CE marked; class A standard, class B through accessories)
- Switching frequency 8 or 16 kHz selectable for optimum dynamic characteristics and small motor power loss
- High dynamics and control quality due to signal processor for digital control of current and speed (controller cycle time 62.5 µs)
- Position control loop (32-bit FP microcontroller, cycle time 1 ms) integrated, setting the target positions via communication interfaces (standard) or internal positioning control with 500 blocks (option)
- Rapid acceleration, deceleration, and reversing of the motor by momentary current increase to three times the rated current
- High processor power for fast axis control and communication
- Extensive technology functions, axis synchronization etc.
- 8 digital inputs, 4 digital outputs, additionally 2 analog inputs and 2 analog outputs (partly optional)
- Communication via USB (standard) or EtherCAT, CANopen, Profinet, CAN, Modbus/TCP, or serial RS485, RS232 (e. g. Modbus RTU) according to CANopen profile CiA 402
- Universal motor position sensor connector for resolver or absolute and incremental encoders with Hiperface, EnDat, or BiSS interface
- Easy wiring, since all connections can be plugged in at the front and at the top (partly also at the bottom)
- Comfortable commissioning and diagnosis using a personal computer
- Function blocks for the development of customized application programs and easy integration in automation systems available
Technical Specifications
Servo Drives for 230 V Mains Voltage (Size 1)
Order number | BN 6771 | BN 6772 | BN 6773 | BN 6774 * |
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Mains connection | 230 V∼ ±10%, 50 .. 60 Hz (85 .. 253 V with reduced/increased DC-bus voltage) |
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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 150 N |
up to 1.3 kW up to 3.5 Nm up to 14 Nm up to 350 N |
up to 1.9 kW up to 5.5 Nm up to 34 Nm up to 500 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 * |
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Mains connection | 3 × 400..480 V ±10%, 50 .. 60 Hz (90 .. 528 V with reduced/increased DC-bus voltage) |
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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 150 N |
up to 1.8 kW up to 7 Nm up to 35 Nm up to 350 N |
up to 4.2 kW up to 17 Nm up to 110 Nm up to 700 N |
up to 8 kW up to 35 Nm up to 270 Nm up to 1,000 N |
up to 16 kW up to 70 Nm up to 270 Nm up to 1,000 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