Overview B05 B07 B10 B14 BH20 BH20 Servofan B26F
BH20 Servofan

Servomotor type BH20 with servofan.

High dynamic servomotors with forced air cooling. Mechanics with flange in square case of 200mm and 5 body lengths. Stall torque in service S1air force cooled from 47 to 175Nm. Power connection with terminal box (IP54) and signal connector through M23 connector.

Electrical specification

Versione for 400VAC power supply
 Symbol  U.meas. BH20S BH20N BH20M  BH20L  BH20G 
Drive power supply voltage  
400VAC
Stall torque at 100K Dt
To Nm 47.8 72.7 94.5 139.4 174.6
Rated speed n RPM 1000 2000 3000 1000 2000 3000 1000 2000 3000 1000 2000 3000 1000 2000 3000
Power at rated speed at 100K Dt  Pn W
4820 9220 12820 7140 13450 18910 9250 17130 23880 13180 26390 32550 15990 28020 37700
Torque at rated speed at 100K Dt Tn
Nm
46 44 40.8 68.2 64.2 60.2 88.3 81.8 76 125.9 113.3 103.6 152.7 133.8 120
Peak torque with S3 10% Tpk
Nm
100 160 210 300 410
Poles number  PN   8
Winding resistance 20°C phase/phase Rw
Ohm
3.1 0.94 0.34 1.6 0.48 0.17 1.35 0.28 0.15 0.6 0.19 0.07 0.44 0.14 0.04
Inductance phace/phase 50Hz Lw
mH 31 9.2 3.3 20 5.8 2.10 16.65 6.10 1.9 8.6 2.70 0.96 6.83 2.25 0.56
EMC constante referred to 20°C Ke V/Krpm 285 157.8 95.5 282 158 95.1 315 148 105.7 289 160 95.1 250.7 142.9 84.2
Torque constant Kt Nm/Arms 4.20 2.35 1.14 4.23 2.35 1.41 4.56 2.13 1.52 4.14 2.3 1.38 4.06 2.317 1.188
Rated voltage 100°C  Vn V
379 385 334.1 368 368 322.2 391 336 354 342 347 294.5 342 351 263
Stall current at 100K Dt Io
 A 11.4 20.3 34 17.2 31 51.5 20.7 44.4 62.2 33.7 60.6 101 43 75.4 147
Rated speed current at 100K Dt In
 A 10.95 18.7 29.1 16.1 27.3 42 19.4 3.4 49.5 30.4 49.3 74 37.6 57.7 99
Peak current  Ipk  A 30 54 87 48 81 135 58 114 150 91.1 162 215 112 195 330

Mechanical data

Motor type BH20 servofan
Symbol  U.meas. BH20S BH20N BH20M BH20L BH20G
Rotor inertia  Jm gm2 7.84 10.76 13.68 19.52 25.36
Rotor inertia with brake Jm gm2  13.06 15.98 18.90 24.94 30.58
Weight
M Kg  40 48.5 54.5 70 84.5
Weight with brake Nb Kg  59 67.5 73.5 89 103.5

Thermal features

Motor type BH20 servofan
 Symbol  U.meas. BH20S BH20N BH20M BH20L BH20G
Operating temperature
  °C 0÷40
Insulation class
  Winding class H - Motor class F
Cooling system

  Forced ventilation : IC416
Servofan power supply   VAC 230V
Servofan current supply   A 0.37÷0.33
Servofan frequency   Hz 50/60
Intervention temperature of the fan
  °C 70
Standard protection
  IP54

Brake specifications

Motor type BH20 servofan
 Symbol  U.meas. BH20S BH20N BH20M BH20L BH20G
Brake static torque 100°C * Tb Nm 160
Brake power at 20°C
Pb W 55
Coupling time
ms  13
Release time   ms 140
Voltage ±5%   VDC 24
Backlash   Arcmin 8
* torque obtained after running in

Standard technical specifications

Type

- Synchronous permanent magnet servomotor ( brushless )

Rotor

- rare earth permanent magnets ( NdFeB )

Insulation

- winding, class H; Motor Class F

Winding
Standard

- 1000 - 2000 - 3000rpm
- winding for 400VAC

On demand

- other combinations of voltage and speed possible.

Insulation

- winding in classH
- motor in class F
- Insulation suitable for 400VAC voltage

Thermal protection sensors
Standard

- PTC

Optional

- KTY84 only on some type

Cooling system

 

- forced ventilation (IC416) through asynchronous servo fan for 230VAC network (50/60Hz) Automatic ignition at about 70 ° C by means of a thermal sensor on the winding.

Standard Protection
 

- IP54 - (exclusion of the shaft side). The protection on the shaft side must be requested and is considered effective only in the presence of an oil bath coupling or with the presence of lubricant.
Ballbearing

- ball bearings with double screen lubricated for life

Balancing

- Grade "R"

Concentricity and perpendicularity of the axis / flange

- grade "N" (normal) - according to  IEC 72 - DIN0530

Shaft output

- with key, with coaxial threaded hole

Brake

- optional. Permanent magnet parking brake, 24VDC power supply with specific polarity. Brake engaged in the absence of power. Braking torque greater than the motor Tn
- Brake not suitable for dynamic stops. He can tolerate a limited number of emergency braking
- Due to the power dissipated by the brake, we recommend derating the motor stall torque by 5% - optional. Permanent magnet parking brake, 24VDC power supply with specific polarity. Brake engaged in the absence of power supply. Braking torque greater than the motor Tn
- optional. Permanent magnet parking brake with braking torque> Tn
 

Connections and cables
 
Power - on terminal box ( M code )
Signal - horizontal connector type M23 ( code G )

Dimensions

BH20 Servofan
Motor type
L LF X XF Note
BH20S-Servofan 354 474 267 387 1) The oil seal is mounted only if an oil bath coupling is provided
BH20N-Servofan 390 510 290 410
BH20M-Servofan 426 546 330 450
BH20L-Servofan 498 618 405 525
BH20G-Servofan 570 690 485 605