B20F

Servomotor type B20 with servofan.

High dynamic servomotors with forced air cooling. Mechanics with flange in square case of 200mm and 4 body lengths. Stall torque in service S1air force cooled from 47 to 150Nm.

Electrical specification

Version for 400VAC power supply
 Symbol   U.mis. B20S/F B20M/F B20L/F B20G/F
Drive power supply voltage
 
400VAC
Stall torque at 100K Dt
To Nm 47 85 115 150
Stall torque at 65K Dt
 To Nm 38 69 95 120
Rated speed n RPM 1000 2000 3000  1000 2000 3000 1000 2000 3000  1000 2000 3000
Power at rated speed at 100K Dt  Pn KW
4,8 9,6 14,1 8,7 16,8 24 12 22 32 15 28 41,7
Torque at rated speed at 100K Dt Tn
Nm
46 46 45 83 81 77 115 107 102 143 134 133
Peak torque with S.i.R.10% Tpk
Nm
138 250 347 408
Acceleration referred to the peak torque
 apk rad/s2
22977 27770 28907 27216
Acceleration referred to the peak torque ( motor with brake)
 apkb rad/s2
13100 18545 21000 20940
Poles  PN   6
Winding resistance 20°C Phase/phase
Rw
Ohm
4,86 0,95 0,49 1,34 039 0,15 0,90 0,19 0,13 0,62 0,16 0,09
Inductance phase/phase 50Hz
Lw
mH 47,8 9,90 5,30 19,80 5,60 2,19 15,90 3,30 2,11 11,20 2,81 1,49
EMF Costant ref. at 20°C
Ke Vs 3,02 1,37 1,01 2,74 1,49 0,91 3,02 1,37 1,10 2,73 1,37 1,02
Torque constant
Kt Nm/Arms 4,97 2,26 1,66 4,51 2,41 1,50 4,96 2,26 1,81 450 2,25 1,69
Rated voltage 100°C
 Vn V
390 337 363 336 345 318 360 316 374 330 318 352
Stall current at 100K Dt
Io
 A 9,50 21,30 29,0 18,8 35,3 56,5 23,8 50,9 65,3 33,1 65,3 94,8
Rated speed current at 100K Dt
In
 A 9,3 20,4 27,2 19,4 33,5 50,9 23,1 47,4 56,5 31,8 31,8 59,6
Peak current
 Ipk  A 28 61 83 55 104 166 70 154 192 91 182 242
Demagnetization current
Idm
 A 73 161 220 161 302 483 220 483 604 302 604 805

Mechanical data

Motor type B20F
 Symbol  U.mis. B20S/F B20M/F B20L/F B20G/F
Rotor inertia
 Jm gm2 6 9 12 15
Rotor inertia ( motor with brake ) Jm gm2  10.5 13.5 16.5 19.5
Weigh
M Kg 38 50 62 74
Weight with brake Mb  Kg 55 67 79 91

Thermal features

Motor type B20F
 Symbol  U.mis. B20S/F B20M/F B20L/F B20G/F
Operating temperature
  °C 0÷40
Insulation class
  Winding class H - Motor class F
Cooling system
  Forced vetilation( IC416 )
Standard protection
  IP54

Brake specifications

Motor type B20F
 Symbol  U.mis. B20S/F B20M/F B20L/F B20G/F
Brake type
  °C 09
Static brake torque at100°C * Tb Nm 160
Brake power at 20°C
Pb W 55
Coupling time

ms  13
Release time   ms 140
TVoltage ±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

Standard Protection
 

- IP54 / IP65 (exclusion of the shaft side). 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

B20F
Motor type
L LF Note
B20S/F 353 473 1) The oil seal is mounted only if an oil bath coupling is provided
B20N/F 428 548
B20M/F 502 622
B20G/F 577 697