Brushless motors - BR series
The BR series servomotors has been
designed to offer the highest dynamic performance and the maximum
flexibility. The Boron Iron Neodymium magnets with high energy production
allow to get a motor with high specific power, bearing high overload without
any risk of demagnetization. The magnetic circuit has been studied to allow
the motors to produce sinusoidal power with reduced torque ripples. Low rotor
inertia allow strong accelerations and decelerations.
The servomotors are compatible with any drive directly fed by power grid:
220/240Vac and 380/460Vac up to size 7 and 380/460 Vac up to size 9.
Main features
Winding: three-phase with Y connection without accessible neutral wire
Winding insulation: class H according to CEI 2-3 (2000)
Thermal dimensioning: class F (Tmax=105K) according to CEI EN 60034-1 (2000)
Protection degree: IP54 according to CEI EN 60034-5 (2001)
Feedback device: two poles resolver
Cooling: IC 410 (motor without self-ventilation), IC 416 (motor with
self-ventilation) according to CEI EN 60034-6 (1997)
Balancing degree: G 2,5 according to ISO 1940 (1993) (half-key balancing for
key shafts according to CEI 2-23 (1993))
Bearings: lubricated for life
Thermal protection: thermal cutout with normally closed contact. Operating
temperature 130±5°C. (Ceiling voltage 250Vac, maximum current 5Aac)
Flange: IM B5 according to CEI EN 60034-7 (1993)
Running position: any
Terminal board with MIL-C-5015 G screw connector for power (for the sizes 5
and 7) and MIL-C-26482 bayonet connector for the signal
Colour: black
Reference conditions: ambient temperature +40°C, max. height 1000m above sea
level.
Storage temperature: -10°C ÷ +70°C
Options
Feedback device: digital encoder + Hall sensors, SinCos encoder, absolute
encoder
Protection degree: IP65 (motor without self-ventilation) according to CEI EN
60034-5 (2001)
Movable MIL connector for power and signal IP54 or IP65
Holding brake
Smooth shaft
Flange: IM B3, IM B35 according to CEI EN 60034-7 (1993)
Terminal board with power terminal block (for the sizes 5 and 7)
Terminal board rotating 90°, 180°, 270° (for the sizes 8 and 9)
Oil seal (it is assembled only when the coupling is oil-bath lubricated)
Oil exhaust for direct gearbox coupling (for the sizes 8 and 9)
Special design on customer's specifications.
Maximum radial rating
The calculation of the maximum radial rating refers to 20,000 working hours
with load on the shaft projection centre. The axial load must not exceed 20%
of the maximum radial rating.
|
Rpm
|
2000
|
3000
|
4000
|
|
Rpm
|
1500
|
2000
|
3000
|
|
Type
|
N
|
N
|
N
|
|
Type
|
N
|
N
|
N
|
|
51
|
675
|
588
|
533
|
|
71
|
1170
|
1059
|
921
|
|
52
|
712
|
620
|
562
|
|
72
|
1217
|
1102
|
957
|
|
53
|
740
|
644
|
584
|
|
73
|
1252
|
1133
|
984
|
|
54
|
760
|
662
|
600
|
|
74
|
1277
|
1155
|
1002
|
|
55
|
777
|
677
|
613
|
|
75
|
1297
|
1172
|
1016
|
|
56
|
790
|
688
|
624
|
|
76
|
1311
|
1185
|
1026
|
|
57
|
802
|
698
|
633
|
|
77
|
1322
|
1194
|
1033
|
|
58
|
811
|
706
|
640
|
|
78
|
1330
|
1201
|
1038
|
|
Rpm
|
1000
|
2000
|
3000
|
|
Rpm
|
1000
|
2000
|
3000
|
|
Type
|
N
|
N
|
N
|
|
Type
|
N
|
N
|
N
|
|
82
|
3429
|
2712
|
2363
|
|
92
|
6129
|
4844
|
4219
|
|
84
|
3778
|
2983
|
2596
|
|
94
|
6449
|
5089
|
4427
|
|
86
|
3976
|
3133
|
2724
|
|
96
|
6974
|
5478
|
4750
|
|
88
|
4097
|
3224
|
2759
|
|
98
|
7142
|
5594
|
4842
|
| Warning: avoid axial shocks on the shaft during the assembly. |
Emergency brake
The brake is incorporated in the motor on the coupling side; it closes when
voltage supply is missing. The brake causes power dissipation and therefore
an S1 on-duty stall motor derating is necessary. The brake must be connected
and disconnected when the rotor is not running.
|
Motor type
|
BR5
|
BR7
|
BR8
|
BR9
|
|
|
Braking torque
|
10
|
32
|
160
|
450
|
Nm
|
|
Supply voltage ± 5%
|
24
|
24
|
24
|
24
|
Vdc
|
|
Holding voltage
|
12
|
12
|
12
|
12
|
Vdc
|
|
Nominal current
|
1,04
|
1,5
|
2,3
|
2,9
|
Adc
|
|
Additional inertia
|
0,038
|
0,35
|
4,48
|
12,96
|
10-3kgm2
|
|
Additional weight
|
1
|
3
|
17
|
35
|
kg
|
|
Insertion response time
|
40
|
70
|
80
|
100
|
ms
|
|
Fall response time
|
20
|
10
|
15
|
15
|
ms
|
|
rotazione Max. speed
|
6000
|
6000
|
6000
|
4500
|
rpm
|
|
Max. angular backlash
|
8
|
8
|
8
|
8
|
min
|
|
Additional length
|
40
|
50
|
120
|
135
|
mm
|
|
Torque derating of motor (1)
|
10
|
10
|
10
|
10
|
%
|
|
1) The percentage reduction in torque is indicative and may be reduced
to 25if you keep feeding the brake fluid with the voltage or motors are
servo-ventilated
|
Ventilation
The motors are provided with electric fan positioned on the opposite side of
the coupling that supplies an axial fan. The air is sucked at the back side
of the motor and is let off toward the flange side. The fan has a IP44
protection degree .
|
Motor type
|
BR5
|
BR7
|
BR8
|
BR9
|
Unit
|
|
Supply voltage single phase +6%-10%
|
1)
|
230
|
230
|
230
|
Vac
|
|
Frequency
|
1)
|
50÷60
|
50÷60
|
50÷60
|
Hz
|
|
Nominal current
|
1)
|
0,31÷0,26
|
0,37÷0,33
|
0,66÷0,94
|
Adc
|
|
Power
|
1)
|
44÷42
|
60÷60
|
150÷215
|
W
|
|
Air flow minimum clearance
|
1)
|
104
|
83
|
127
|
mm
|
|
Start temperature
|
1)
|
-
|
70
|
70
|
°C
|
|
Percentage increase of motor torque (2)
|
1)
|
40
|
3)
|
3)
|
%
|
|
Additional weight
|
1)
|
3,2
|
3)
|
3)
|
kg
|
1) Please consult our technical
department.
2) The torque percentage increment refers to the “S1 on-duty-jammed
rotor torque ” with over temperature 105°C and "rated speed
torque”.
3) Please see “Performances”. |
Performance specifications
Stall torque data and nominal power refer to motor mounted in the horizontal
position, ambient temperature max. 40°C, altitude max. 1000m on the sea
level, motor fix on Aluminum flange dimension:
BR5: 350x350x25mm
BR7: 450x450x25mm
BR8: 1120x800x25mm
BR9: 1120x800x25mm
Electrical Data
Dimensions
