Brushless motors

Brushless DC motors from the BL range are available in 5 si- zes with torque from 37 mNm to 0.7Nm and they can be supplied with either an integrated (version IE) or external driver. The advantages of using brushless motors instead of traditional DC brush motors are the following:

  • Longer life time
  • Higher efficiency
  • Electronic commutation and control of the motor via digital sensors (encoder, resolver etc.)
  • Wide speed range
  • Maintenance free

BL motors have a compact design and thanks to low inertia they have high performances and are a low cost solution already including Hall sensors, as opposed to an encoder or resolver. The 3 phase windings of the motor have a low voltage of 24/36/48 V and so these motors are safer to use when a machine operator has direct contact with them. Furthermore, by using the integrated speed controller, optional IE solution, the cables of the equipment can be simplified taking up less space in the electric cabinet.

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Characteristics

IP enclosures protection indexes

Indicates the degree of mechanical insulation of the motor body.
1st figure indicating level of protection against the penetration of solid bodies.
2nd figure: indicating degree to which the motor is waterproof.

2 Protected against solid matters (over Ø 12 mm).
3 Protected against solid matters (over Ø 2,5 mm).
4 Protected against solid matters (over Ø1 mm).
0 No protection

N.B.: Motor BL002 only with standard protection IP34 and IP30 IE.

Insulation class

Class Δ t °C
Ambient temperature: 40°C
B 90°C
F 115°C
H 140°C

IEC duty cycle ratings

S1 Continuous duty. The motor works at a constant load for enough time to reach temperature equilibrium.
S2 Short time duty. The motor works at a constant load, but not long enough to reach temperature equilibrium, and the rest periods are long enough for the motor to reach ambient temperature.
S3 Intermittent periodic duty. Sequential, identical run and rest cycles with constant load. Temperature equilibrium is never reached.
Starting current has little effect on temperature rise.

Key / Diagram Glossary

With a brushless motor, the rotational speed is a linear function of
the torque. In the same way, the absorbed current is also a linear
function of the torque. Speed and current change a lot against
applied torque.

Motori Brushless - Legenda e Glossario

The output power is calculated using the formula:
Pn [W]= Mn · S =
60
· n1 · Mn

Motori Brushless - Legenda e Glossario

Since the supply voltage is constant, whereas the current increases
in a linear manner as the torque increases, the absorbed power
trend is a straight line going up. Efficiency is shown from the ratio
between the output power and the absorbed power.

Useful formulas

η =

Pn
Pa

Pa = V · I
Pn = V · I · η
Pn = Mn · Sv
Sv =
N1
9.55

[HP] · 746 = [W].
Example 2 HP = approx. 1500 W.

S - Duty
Pn [W] Rated power
Pa [W] Absorbed power
Mn [Nm] Rated torque
V [V] Voltage
I [A] Absorbed current
n1 [min-1] Motor speed
Sv [rad/s] Angular speed
IC - Thermal insulation class
FF - Form factor
IP - protection class
η - Efficiency
Kg - Weight

Technical datas

BL005

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [mNm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL005.240 4 3 24 3700 50 16 150 1.0 3 4.2 2.2 50 5.23 5.98 0.208
BL005.240-IE 4 3 24 3000 22 7 44 0.55 1.1 9.5 4.8 40 5.98 0.220

BL012

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [Nm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL012.240 8 3 24 4000 0.125 52 0.38 3.5 10.6 0.80 1.2 0.0355 3.72 48 0.45
BL012.240-IE 8 3 24 4000 0.125 52 0.25 3.5 7.1 0.80 1.2 0.0355 3.72 48 0.57

BL018

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [Nm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL018.240 8 3 24 4000 0.185 78 0.56 5 15.5 0.55 0.8 0.036 3.76 72 0.65
BL018.240-IE 8 3 24 4000 0.185 78 0.38 5 10.3 0.46 0.7 0.038 3.97 72 0.76

BL025

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [Nm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL025.24E 8 3 24 4000 0.25 105 0.75 6.6 21 0.3 0.5 0.0376 3.9 96 0.8

BL032

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [Nm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL032.240 4 3 36 4000 0.32 135 1.0 5 16.5 0.45 1.4 0.063 6.6 173 1.0
BL032.240-IE 4 3 36 4000 0.32 135 0.64 5 11.0 0.45 1.65 0.061 6.3 173 1.18
BL032.240-IE 4 3 24 3000 0.32 100 1.0 5 16.5 0.45 1.4 0.063 6.6 173 1.0
BL032.240-IE 4 3 24 3000 0.32 100 0.64 5 11.0 0.45 1.65 0.061 6.3 173 1.18

BL043

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [Nm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL043.240 4 3 36 4000 0.43 180 1.27 6.8 20.5 0.35 1.0 0.063 6.6 230 1.25
BL043.240-IE 4 3 36 4000 0.43 180 0.86 6.8 13.6 0.38 1.0 0.063 6.6 230 1.44
BL043.240 4 3 36 3000 0.43 130 1.27 6.8 20.5 0.35 1.0 0.063 6.6 230 1.25
BL043.240-IE 4 3 36 3000 0.43 130 0.86 6.8 13.6 0.38 1.0 0.063 6.6 230 1.44
BL032.240-IE 4 3 36 4000 0.32 135 0.64 5 11.0 0.45 1.65 0.061 6.3 173 1.18
BL032.240-IE 4 3 24 3000 0.32 100 1.0 5 16.5 0.45 1.4 0.063 6.6 173 1.0
BL032.240-IE 4 3 24 3000 0.32 100 0.64 5 11.0 0.45 1.65 0.061 6.3 173 1.18

BL070

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Model Poles Phases Rated
voltage
Rated
speed
Rated
torque
Rated power Peak
torque
Rated
current
Peak
current
Line to line
resistance
Line to line
inductance
Torque
constant
Back
EMF
Rotor
inertia
Weight
[V] [min-1] [Nm] [W] [Nm] [A] [A] [Ω] [mH] [Nm/A] [V/kRPM] [gcm2] [kg]
BL070.48E 8 3 48 3000 0.7 220 2.1 6.5 20 0.34 1.0 0.107 9 0.8 2.1

DrivesAccessories and drives

Drives
Suitable motors Type Amp nom Amp peak
BL005.240 BLD07 1 3
BL012.240 BLD07 - BLD15 3.5 7
BL018.240 BLD07 - BLD15 5 10
BL025.24E BLD07 - BLD15 7 14
BL032.240 BLD07 - BLD15 5 10
BL043.240 BLD07 - BLD15 6 12
BL070.48E BLD15 15 30

Options

INTEGRATED ELECTRIC CONTROL FOR BRUSHLESS MOTORS IE version

 

Brushless motor connection

BL005.240-IE
Leads connection reference
Red = positive voltage supply (+24 Vdc)
Blue = negative voltage supply
White = speed reference voltage (from 1 to 3.5 Vdc over the negative)
Green = selection of direction


BL012.240-IE and BL018.240-IE

+5v F/R SV PG GND -VP +VP
1 2 3 4 5 6 7
7 +VP DC power input +24Vdc
6 -VP TPower ground
5 GND Common ground of system
4 PG Speed pulse output (TTL), 24 pulse/rev
3 SV Speed voltage 0-5 VDC
2 F/R Rotating direction. Hi=CW
1 +5V +5V voltage output

For all other data, see the standard motor.


BL032.240-IE and BL043.240-IE

+5v F/R SV PG GND -VP +VP
1 2 3 4 5 6 7
7 +VP DC power input +24Vdc/+36Vdc
6 -VP Power ground
5 GND Common ground of system
4 PG Speed pulse output (TTL), 12 pulse/rev
3 SV Speed voltage 0-5 VDC
2 F/R Rotating direction. Hi=CW
1 +5V +5V voltage output

For all other data, see the standard motor.

Encoder

Encoder

ENCODER

Link al download del PDF


The ME22 is a reliable low cost optical hollow shaft encoder that can be fixed quickly and easily on different sizes of motor shafts.

The encoder provides two square wave outputs in quadrature (90 degrees phase shifted) for counting and direction information. The revolution of the encoder is determined by the number of counts per revolution (CPR). Resolution up to 360 CPR . Power supply and signals are provided by a 5 pin Molex connector.

Optional encoders

Micro Encoder MEC22 HR

The MEC22 HR is a high resolution optical hollow shaft encoder that can be fixed quickly and easily on different sizes of motor shafts. The encoder provides two square wave outputs in quadrature (90 degrees phase shifted) for counting and direction information and one index channel (one pulse per revolution).
The resolution of the encoder is determined by the number of counts per revolution(CPR). Resolution up to 2048 CPR. Power supply and signals are provided by a 5 pin Molex connector.

encoder
download-manual
 

Micro Encoder MEM22

The MEM 22 is a magnetic incremental encoder. He is a reliable low cost hollow shaft encoder that can be fixed quickly and easily on different sizes of motor shafts.
The encoder MEM22 is designed for applications where rough environments, high vibrations and low temperature are the topics to meet.
The power supply is selectable in a wide voltage range 5V up to 30V. Resolution up to 1024 CPR.
Power supply and signals are provided by a 6 pin Molex connector.

encoder
download-manual
 

Brake

Brake