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 |
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| 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 |
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- Synchronous permanent magnet servomotor ( brushless ) |
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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; Motor Class F |
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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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| Insulation |
- winding in classH |
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Thermal protection sensors |
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| Standard |
- PTC |
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| Optional |
- KTY84 only on some type |
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Cooling system |
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- 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. |
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Standard Protection |
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| - 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. |
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Ballbearing |
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- ball bearings with double screen lubricated for life |
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Balancing |
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- Grade "R" |
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Concentricity and perpendicularity of the axis / flange |
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- grade "N" (normal) - 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 specific polarity. Brake engaged in the absence of power. Braking torque greater than the motor Tn |
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Connections and cables |
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| Power | - on terminal box ( M code ) |
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| Signal | - horizontal connector type M23 ( code G ) |
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Dimensions
| 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 |