Brushless DC-Servomotors Series 2444 ... B

2 Pole Technology

Key Features

Nominal voltage:

24 ... 48 V

Rated torque up to:

14.3 mNm

No-load speed up to:

22200 min⁻¹

Stall torque up to:

123 mNm

Diameter:

24 mm

Length:

44 mm

Advantages

High density ironless system FAULHABER winding

Digital or analog hall sensors available

Extremely smooth speed control

Sensitive positioning control

Variants:

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	2 Ω
Efficiency, max.	η_max.	79 %
No-load speed	n₀	22200 min⁻¹
No-load current	I₀	0.159 A
Stall torque	M_H	123 mNm
Friction torque, static	C₀	0.746 mNm
Friction torque, dynamic	C_V	3.87 ·10⁻⁵ mNm/min⁻¹
Speed constant	k_n	927 min⁻¹/V
Back-EMF constant	k_E	1.08 mV/min⁻¹
Torque constant	k_M	10.3 mNm/A
Current constant	k_I	0.097 A/mNm
Slope of n-M curve	Δn/ΔM	180 min⁻¹/mNm
Terminal inductance, phase-phase	L	175 µH
Mechanical time constant	τ_m	10.8 ms
Rotor inertia	J	5.7 gcm²
Angular acceleration	α_max.	216 ·10³rad/s²
Thermal resistance	R_th1/R_th2	2.4 / 11.6 K/W
Thermal time constant	τ_w1/τ_w2	9.6 / 470 s
Operating temperature range		-30 ... 125 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		98 g
Direction of rotation		electronically reversible
Speed up to	n_max.	45000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		SmCo

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	48 V
Terminal resistance, phase-phase	R	8.54 Ω
Efficiency, max.	η_max.	78 %
No-load speed	n₀	21600 min⁻¹
No-load current	I₀	0.076 A
Stall torque	M_H	118.5 mNm
Friction torque, static	C₀	0.746 mNm
Friction torque, dynamic	C_V	3.87 ·10⁻⁵ mNm/min⁻¹
Speed constant	k_n	450 min⁻¹/V
Back-EMF constant	k_E	2.22 mV/min⁻¹
Torque constant	k_M	21.2 mNm/A
Current constant	k_I	0.047 A/mNm
Slope of n-M curve	Δn/ΔM	181 min⁻¹/mNm
Terminal inductance, phase-phase	L	740 µH
Mechanical time constant	τ_m	10.8 ms
Rotor inertia	J	5.7 gcm²
Angular acceleration	α_max.	208 ·10³rad/s²
Thermal resistance	R_th1/R_th2	2.4 / 11.6 K/W
Thermal time constant	τ_w1/τ_w2	9.6 / 470 s
Operating temperature range		-30 ... 125 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		98 g
Direction of rotation		electronically reversible
Speed up to	n_max.	45000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		SmCo

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	2 Ω
Efficiency, max.	η_max.	79 %
No-load speed	n₀	22200 min⁻¹
No-load current	I₀	0.159 A
Stall torque	M_H	123 mNm
Friction torque, static	C₀	0.746 mNm
Friction torque, dynamic	C_V	3.87 ·10⁻⁵ mNm/min⁻¹
Speed constant	k_n	927 min⁻¹/V
Back-EMF constant	k_E	1.08 mV/min⁻¹
Torque constant	k_M	10.3 mNm/A
Current constant	k_I	0.097 A/mNm
Slope of n-M curve	Δn/ΔM	180 min⁻¹/mNm
Terminal inductance, phase-phase	L	175 µH
Mechanical time constant	τ_m	10.8 ms
Rotor inertia	J	5.7 gcm²
Angular acceleration	α_max.	216 ·10³rad/s²
Thermal resistance	R_th1/R_th2	2.4 / 11.6 K/W
Thermal time constant	τ_w1/τ_w2	9.6 / 470 s
Operating temperature range		-30 ... 125 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		98 g
Direction of rotation		electronically reversible
Speed up to	n_max.	45000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		SmCo

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	48 V
Terminal resistance, phase-phase	R	8.54 Ω
Efficiency, max.	η_max.	78 %
No-load speed	n₀	21600 min⁻¹
No-load current	I₀	0.076 A
Stall torque	M_H	118.5 mNm
Friction torque, static	C₀	0.746 mNm
Friction torque, dynamic	C_V	3.87 ·10⁻⁵ mNm/min⁻¹
Speed constant	k_n	450 min⁻¹/V
Back-EMF constant	k_E	2.22 mV/min⁻¹
Torque constant	k_M	21.2 mNm/A
Current constant	k_I	0.047 A/mNm
Slope of n-M curve	Δn/ΔM	181 min⁻¹/mNm
Terminal inductance, phase-phase	L	740 µH
Mechanical time constant	τ_m	10.8 ms
Rotor inertia	J	5.7 gcm²
Angular acceleration	α_max.	208 ·10³rad/s²
Thermal resistance	R_th1/R_th2	2.4 / 11.6 K/W
Thermal time constant	τ_w1/τ_w2	9.6 / 470 s
Operating temperature range		-30 ... 125 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		98 g
Direction of rotation		electronically reversible
Speed up to	n_max.	45000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		SmCo

Operating Area

Recommended operation areas at nominal voltage 24 V

The diagram indicates the recommended speed in relation to the available torque at the output shaft for a given ambient temperature of 22°C.

The diagram shows the motor in a completely insulated as well as thermally coupled condition (R_th2 50% reduced).

The nominal voltage (U_N) curve shows the operating point at nominal voltage in the insulated and thermally coupled condition. Any points of operation above the curve at nominal voltage will require a higher operating voltage. Any points below the nominal voltage curve will require less voltage.

Characteristic curves of motor