BH20 type servomotor.
Servomotors with natural air cooling. 200mm square case flange and 5 body lengths. Stall torques in S1 non-ventilated service from 30 Nm up to 117 Nm. Terminal box (IP54) for power and M23 type signal connector.
Electrical specification
| Version for 4 power supply 400VAC |
Symbol | U.M. | BH20S | BH20N | BH20M | BH20L | BH20G | |||||||||||
| Drive supply voltage |
400VAC | |||||||||||||||||
| Stall torque 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 | ND | 1000 | 2000 | ND | |
| Power at rated speed 100K Dt | Pn | W |
3150 | 5400 | 6750 | 4430 | 6890 | 6380 | 5630 | 8210 | 5720 | 6960 | 8290 | - | 9120 | 10140 | - | |
| Torque at rated speed 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 | - | |
| Peak torque with service S3 10% | Tpk |
Nm |
100 | 160 | 210 | 300 | 410 | |||||||||||
| Poles | PN | 8 |
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| 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 | - | |
| Phase-to-phase inductance 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 | - | |
| E.M.F. constant ref at 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 torque 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 | - | |
| Current at rated speed 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.M. | 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 characteristics
| Motor type BH20 |
Symbol | U.M. | BH20S | BH20N | BH20M | BH20L | BH20G |
| Operating temperature |
°C | 0÷40 |
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| Insulation class |
Winding class H - Motor class F | ||||||
| Cooling system | Natural air: IC0041 | ||||||
| Standard protection | IP54 ( excluded shaft side) | ||||||
Brake specifications
| Motor type BH20 |
Symbol | U.M. | BH20S | BH20N | BH20M | BH20L | BH20G |
| Static brake torque 100°C * |
Tb | Nm | 160 | ||||
| Brake power at 20°C |
Pb | W | 55 | ||||
| Engagement time |
ms | 13 | |||||
| Release time |
ms | 140 | |||||
| Voltage ±5% | VDC | 24 | |||||
| Angular backlash | Arcmin | 8 | |||||
| * torque obtained after running-in | |||||||
Transducers available
| Motor type BH20 |
Oder code | BH20S | BH20N | BH20M | BH20L | BH20G |
| Resolver | cod.1 | Available | ||||
| Optical incremental encoder 1024ppr 5V LD with Halls sensors |
cod.2 | Not available | ||||
| Optical incremental encoder 2500 ppr 5V LED with Halls sensors |
cod.200 | Available | ||||
| Magnetic incremental encoder 1024ppr 5V LD with Halls sensors | cod.280 | Not available | ||||
| Absolute Magnetic encoder 1024ppr SSI Bin |
cod.480 | Not available | ||||
| Multiturn absolute encoder 22Bit, 4096 turns, BiSS with SinCos |
cod.512 | Available | ||||
Standard technical specifications
Type |
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- Permanent magnet synchronous servomotor without commutator.. |
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Rotor |
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- rare earth permanent magnets (NdFeB) |
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Insulation |
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- winding: class H |
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Winding |
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| Standard |
- 1000-2000-3000rpm |
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| On demand |
- other combinations of voltage and speed possible. |
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| Isolamento |
- winding: class H |
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Thermal protection sensors |
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| Standard |
- by means of PTC |
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| Option |
- KTY84 only in some models |
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Cooling system |
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- natural air ( IC0041 ) |
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Standard protection |
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| - IP54 (shaft side exclueded). 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. |
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Ball bearings |
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- ball bearings with double shield lubricated for life |
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Balancing |
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- Grade "R" |
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Axis/flange concentricity and perpendicularity |
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- grade "N" (rated) - according to IEC 72 - DIN0530 |
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Shaft output |
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- with key, with coaxial threaded hole |
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Brake |
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- optional. Permanent magnet parking brake, 24VDC power supply with determined polarity. Brake engaged in the absence of power. Braking torque greater than the motor Tn |
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Cable and connections |
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| Power | - on terminal box (M code) |
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| Signal | - with M23 type horizontal connector (G code) | |
Dimensions
| Motor type |
L | LF | X | XF | Notes |
| BH20S | 265 | 302 | 182 | 385 | 1) the oil seal is mounted only if an oil bath coupling is foreseen |
| BH20N | 301 | 338 | 218 | 421 | |
| BH20M | 337 | 374 | 254 | 457 | |
| BH20L | 409 | 446 | 326 | 529 | |
| BH20G | 481 | 518 | 398 | 601 | |
| DRAWINGS | Download 3D | ||||