Servomotor type BH20 Servoventilated.
Servomotors with forced air cooling. 200mm square case flange and 5 body lengths. Stall torque in S1 servo-ventilated service from 47,8 to 174,6Nm. Terminal box (IP54) for power and M23 type signal connector.
Electrical data
| Version for 400VAC power supply |
Symbol | U. M. | BH20S | BH20N | BH20M | BH20L | BH20G | |||||||||||
| Drive supply voltage |
400VAC | |||||||||||||||||
| Stall torque at 100K Δt |
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 Δt | Pn | W |
4820 | 9220 | 12820 | 7140 | 13450 | 18910 | 9250 | 17130 | 23880 | 13180 | 26390 | 32550 | 15990 | 28020 | 37700 | |
| Torque at rated speed at 100K Δt | Tn |
Nm |
46 | 44 | 40.8 | 68.2 | 64.2 | 60.2 | 88.3 | 81.8 | 76 | 126 | 113 | 104 | 153 | 134 | 120 | |
| Peak torque with S3 10% at 100K Δt | Tpk |
Nm |
100 | 160 | 210 | 300 | 410 | |||||||||||
| Poles | 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 | |
| Phase-to-phase inductance 50Hz |
Lw |
mH | 31 | 9.2 | 3.3 | 20 | 5.8 | 2.10 | 16.6 | 6.10 | 1.9 | 8.6 | 2.70 | 0.96 | 6.83 | 2.25 | 0.56 | |
| E.M.F. constant ref at 20°C |
Ke | V/Krpm | 285 | 158 | 95.5 | 282 | 158 | 95.1 | 315 | 148 | 106 | 289 | 160 | 95.1 | 251 | 143 | 84.2 | |
| Torque constant at 100K Δt |
Kt | Nm/Arms | 4.20 | 2.35 | 1.41 | 4.23 | 2.35 | 1.41 | 4.56 | 2.13 | 1.52 | 4.14 | 2.3 | 1.38 | 4.06 | 2.32 | 1.19 | |
| Rated voltage at 100K Δt |
Vn | V |
379 | 385 | 334 | 368 | 368 | 322 | 391 | 336 | 354 | 342 | 347 | 294 | 342 | 351 | 263 | |
| Stall current at 100K Δt | 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 Δt |
In |
A | 11 | 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
| BH20 servo-ventilated motor |
Symbol | U. M. | BH20S | BH20N | BH20M | BH20L | BH20G |
| Rotor inertia | Jm | gm2 | 7.84 | 10.76 | 13.68 | 19.52 | 25.36 |
| Rotor inertia (motor with brake) | Jmb | gm2 | 13.06 | 15.98 | 18.90 | 24.74 | 30.58 |
| Mass | M | Kg | 40 | 48.5 | 54.5 | 70 | 84.5 |
| Mass with brake | Mb | Kg | 59 | 67.5 | 73.5 | 89 | 103.5 |
Thermal data
| BH20 servo-ventilated motor |
Symbol | U. M. | BH20S | BH20N | BH20M | BH20L | BH20G |
| Refernce and operating conditions |
°C | 0÷40 |
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| Insulation class |
Class F | ||||||
| Cooling system |
Forced ventilation : IC416 | ||||||
| Fan power supply |
VAC | 230V | |||||
| Fan power supply current |
A | 0.37÷0.33 | |||||
| Fan frequency |
Hz | 50/60 | |||||
| Fan start-up temperature |
°C | 70 | |||||
| Protection degree | IP54 | ||||||
Brake parking data
| BH20 servo-ventilated motor |
Symbol | U. M. | BH20S | BH20N | BH20M | BH20L | BH20G |
| Static brake torque 100°C * | Tb | Nm | 160 | ||||
| Brake power at 20°C |
Pb | W | 55 | ||||
| Coupling time |
ms | 13 | |||||
| Release time | ms | 140 | |||||
| Drive volatage ±5% | VDC | 24 | |||||
| Backlash | Arcmin | 8 | |||||
| * Torque obtained after running-in | |||||||
Torque curves
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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Winding |
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| Standard |
- 1000rpm |
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| On demand |
- other combinations of voltage and speed possible.. |
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| Insulation |
- class F |
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Thermal protection sensors |
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| Standard |
- by means of PTC on signal connector and KTY84 on terminals inside the terminal box |
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Cooling |
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- forced ventilation (IC416) via asynchronous servo fan for 230VAC (50/60Hz) power supply - Automatic switch-on at approximately 70°C via thermal sensor on the winding. |
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Standard protection |
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| - IP54 (exclusion of the shaft side). 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. The presence of the servo ventilation and the terminal box do not allow an IP65 rating. |
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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 G6,3 according ISO 21940-11 |
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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 |
- Electromagnetic 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) | |
Feedback
Resolver |
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| Code - 1 |
- 2 poles resolver |
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Incremental Encoder |
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| Code - 200 |
- Incremental optical encoder at 2500imp./rev. with Hall sensors arranged at 120° - 5V line drive voltage |
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Absolute encoder |
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| Code - 512 |
- Absolute optical multi-turn encoder BiSS-B with 22 Bit per turn and 12 Bit multi-turn resolution and SinCos channels 2048imp./rev. |
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Dimensions
| Motor type |
L | LF | X | XF | Notes |
| BH20S-F | 354 | 474 | 267 | 387 | 1) the oil seal is mounted only if an oil bath coupling is foreseen |
| BH20N-F | 390 | 510 | 290 | 410 | |
| BH20M-F | 426 | 546 | 330 | 450 | |
| BH20L-F | 498 | 618 | 405 | 525 | |
| BH20G-F | 570 | 690 | 485 | 605 | |
| DRAWINGS | Download 3D | ||||