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Overview B05 B07 B10 B14 BH20 BH20 Servofan B26F
BH20

Servomotor type BH20

Servomotors with natural air cooling. Mechanics with flange in square case of 200mm and 5 body lengths. Stall torque in service S1 not self-cooled from 30 Nm to 117 Nm. Power connection through terminal box, signal connection through M23 connector.

Electrical specification

Version for 400VAC power supply
 Symbol  U.meas. BH20S BH20N BH20M  BH20L  BH20G 
Drive power supply voltage
  
400VAC
Stall torque at 100K Dt
 To Nm 33,6 48,5 64,7 87,2 116,5
Rated speed n RPM 1000 2000 3000 1000 2000 3000 1000 2000 3000 1000 2000

NA

 1000 2000 NA
Power at rated speed at 100K Dt  Pn W
 3150 5400 6750 4430 6890 6380 5630 8210 5720 6960 8290 - 9120 10140 -
Torque at rated speed at 100K Dt Tn
Nm
 30,1 25,8 21,5 42,3 32,9 20,3 53,8 39,2 18,2 66,5 39,6 - 87,1 48,4 -
Peack torque S3 10% Tpk
Nm
 100 160 210 300 410
Poles number  PN   6
Winding resistance 20°C phase/phase Rw
Ohm
3,1 0.94 0,34 1,6 0.48 0,17 1,35 0.28 0,151 0,6 0.19 - 0,44 0.14 -
Inductance phase/phase 50Hz Lw
mH 31 9.2 3.36 20 5.80 2.1 16.6 6.10 1.96 8.6 2.70 - 6.8 2.25 -
EMC constant referred to 20°C Ke V/Krpm 285 157.8  94.6 282 158 95.1 315 148 105.7 289 160 - 300 178 -
Torque constant Kt Nm/Arms 4.4 2.44 1.46 4.27 2.37 1.42 4.8 2.24 1.6 4.25 2.36 - 4.17 2.38 -
Rated voltage 100°C  Vn V
 325 331 287 318 319 274 334 286 288 290 295 - 293 300 -
Stall current at 100K Dt Io
 A 7.6 13.7  22.9  11.3  20.5  34.1  13.5  28.9  40.5  20.5  36.9  - 28.5  49.8  -
Rated speed current at 100K Dt In
 A 6.8 10.5  14.5  9.9  13.9  14.4  11.2  17.5  11.8  15.6  16.8  - 20.9 20.4  -
Peak current  Ipk  A 30 54  87  48  81  135  58  114  150  91.1  162  - 112  195  - 

Mechanical data

Motor type BH20
 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  24.74  30.58 
Weight
 M Kg  32.5 40  45  59.5  72.5 
Weight with brake Nb Kg  49.5 57  62  76.5  89.5 

Thermal features

Motor type BH20
  Symbol  U.meas. BH20S BH20N BH20M BH20L BH20G
Operating temperature
   °C 0÷40
Insulation class
  Winding class H - Motor class F
Cooling system
  Natural air cooling: IC0041
Standard protection
  IP54

Brake specifications

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

Feedbacks available

Motor type BH20
  Order Code BH20S BH20N BH20M BH20L BH20G
Resolver code 1 Available
Optical incremental enc. 1024ppr 5V LD with Hall's sensors cod.2 Not Available
Optical incremental enc. 2500ppr 5V LD with Hall's sensors
 cod.200 Available
Magnetic incremental enc. 1024ppr with Hall's sensors cod.280  Not Available
Magnetic Absolute enc. 1024ppr SSI Bin cod.480  Not Available
Multiturn Mechanical Absolute Enc. 22Bit, 4096 rev, BiSS with SinCos cod.512  Available

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

 

- natural air ( IC0041 )
Standard Protection
  

- IP54 - The IP65 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
Motor type
 L LF X XF Note
BH20S 265 302 182 385 1) the oil seal is mounted only if a coupling in an oil bath is foreseen
BH20N 301 338 218 421
BH20M 337 374 254 457
BH20L 409 446 326 529
BH20G 481 518 398 601