Technical specifications:
The BR series servomotors are designed to offer the highest dynamic performance and are used in applications such as CNC lathes, servopumps, metalworking machines, woodworking machines, plastic and rubber processing machines. The use of Neodymium Iron Boron magnets with a high energy product makes it possible to obtain motors with high specific power capable of withstanding large overloads without the risk of demagnetisation. The magnetic circuit has been designed to allow the motors to produce a sinusoidal F.e.m. with reduced torque ripple. The low rotor inertias guarantee the possibility of high acceleration and deceleration.
Standard features:
• Winding: three-phase star without accessible neutral
• Winding insulation: class H according to CEI 2-3 (2000)
• Dimensioning: class F (dTmax=105K) according to CEI EN 60034-1 (2000)
• Degree of protection: IP54 according to CEI EN 60034-5 (2001)
• Position sensor: 2-pole resolver
• Cooling: IC 410 (motor without servo-ventilation), IC 416 (servo-ventilated motor) according to CEI EN 60034-6 (1997)
• Grade of balancing: G 2.5 in accordance with ISO 1940-1 (1993) (balancing with half key for shafts with key CEI 2-23 (1993))
• Bearings: lubricated for life
• Thermal protection: thermal protector with normally closed contact. Operating temperature 130±5°C. (Maximum voltage 250Vac , maximum current 5Aac
• Construction type: IM B5 according to CEI EN 60034-7 (1993)
• Operating position: any
• Colour: black RAL 9005
• Reference conditions: ambient temperature +40°C, max. altitude 1000m a.s.l.
• Storage temperature: -10°C to +70°C
• Reference switching frequency: 8kHz
Dimensions:
Electrical data:
| Property | Name | Unit | Value |
| Stall torque 1) 3) ( ) 5) | T0 | Nm | 340 (493) |
| Nominal power 1) ( ) 5) | PN | W | 27227 (71628) |
| Nominal torque 1) ( ) 5) | TN | Nm | 130 (342) |
| Nominal speed | nN | rpm | 2000 |
| Peak torque 20°C | Tmax | Nm | 530 |
| Nominal current 1) ( ) 5) | IN | Arms | 130 (342) |
| Stall current 1) 3) ( ) 5) | I0 | Arms | 138 (200) |
| Peak current | Imax | Arms | 227 |
| Rotor inertia | Jm | kgcm² | 753 |
| Voltage constant 20°C 2) | ke | Vs/rad | 1.56 |
| Torque constant 20°C with stall motor 2) | kt | Nm/Arms | 2.62 |
| Ke and kt reduction coeff. over temperature | dk/dt | [%/°C] | -0.11 |
| Winding resistance 20°C 2) | Rc | Ohm | 0.027 |
| Winding inductance 20°C 2) | Lc | mH | 1.06 |
| E.M.F. at 1000 rpm 20°C 2) | V1000 | V/krpm | 163 |
| Nominal voltage1) ( ) 5) | Vn | Vrms | 326 (315) |
| Weight | m | kg | 177 |
| Number of poles | 2p | - | 8 |
Torque and power values refer to motor flanged and suspended in horizontal positions (steel flange 500x500x40 mm). Minimum PWM 4kHz, DC bus test voltage ≤ 560 Vdc uncontrolled, tested with resolver
1) Continuous service S1 (dT=105°C)
2) Tolerance ± 10%
3) Value referred to 100 rpm
4) Inverters connected to this motor must have a field weakening option in order to reach nominal speed
5) Duty S3 - 40% - 1 minute
Motor curve:
Further information: