AL28xx | Linear Servomotors
The 3-phase synchronous Linear Servomotors AL2800 expand the high-performance product range. The coil unit contains a grooved, laminated core with inlaid copper windings. It is generally used as the moving part. The magnet plate contains the steel plate to which the permanent magnets are fixed.
The AL2800 series consists of four different motors, all having exactly the same width of 130 mm. This means that all the motors can be operated using the same magnet plates. There are two different lengths of magnet plates that can be combined in any desired way. The magnet plates are fully sealed and therefore have an almost perfectly level and robust surface.
The coil units are also potted, satisfy protection class IP 64, and are therefore suitable for use in aggressive environments. Coil units are fitted with a 0.5 m cable bundle and optionally with pre-assembled connectors, so that they can be connected to the connector box or the Servo Drive via plugged connections. This greatly reduces the difficulty of implementing the cabling and makes a significant contribution to avoiding errors.
IIn combination with the EtherCAT Servo Drive AX5000, the AL2xxx series linear motors are particularly suitable for dynamic movements where high acceleration is required over short distances.
All linear motors of the series AL2xxx have the same magnet pitch (24 mm).
The motor connection is compatible with the other types of the AL2xxx series.
Features
- speeds of 2.5 m/s or 6 m/s
- accelerations up to 30 g
- peak forces of 2,250 N to 6,750 N
- no mechanical wear
- complete absence of backlash, giving stiff control response
- extremely precise positioning, high repeatability
- direct force, little latching force
- very low thermal resistance, allowing high capacity utilisation
- protection from thermal overload through integrated temperature sensors
- Operation with the AX5000 is made extremely simple through default values.
- connection to the AX5000 through pre-assembled cables
Scaleless feedback system for Linear Servomotors
The MES system registers the magnetic field of the permanent magnets of the magnet plate. It sends, with the aid of built-in electronics, encoder signals for commutation as well as speed and position control to the AX5000 series Servo Drive. The MES provides one sine wave per 24 mm pole pitch and a precision of 1/10 mm.
Connector box
As a further accessory, Beckhoff offers an adapter box with motor, feedback and thermal protection line connected on one side. The pre-assembled motor and encoder lines can be attached on the other side.
| Dimensions | b | la | h |
|---|---|---|---|
| AL2812 | 130 mm | 244 mm | 45 mm |
| AL2815 | 130 mm | 290 mm | 45 mm |
| AL2818 | 130 mm | 344 mm | 47 mm |
| AL2830 | 130 mm | 562 mm | 45 mm |
| AL2845 | 130 mm | 852 mm | 47 mm |
* increased weight with water-cooled primary section
| Technical data | AL2812 | AL2815 | AL2818 |
|---|---|---|---|
| Winding type | N | S | ||
| Max. speed | 3 m/s (N), 6 m/s (S) |
2.5 m/s (N), 6 m/s (S) |
3 m/s (N), 6 m/s (S) |
| Motor configuration | 3-phase synchronous Linear Servomotors (400…480 V AC) | ||
| Peak force (FP) | 1800 N | 2250 N | 2700 N |
| Peak current (IPa) | 13 A (N), 26 A (S) |
13.5 A (N), 33 A (S) |
19.6 A (N), 41 A (S) |
| Continuous force with water cooling (Fcw) | – | – | 1200 N |
| Continuous force with air cooling (Fca) | 760 N | 950 N | 1140 N |
| Continuous current with water cooling (Icw) | – | – | 6.5 A (N), 13.4 A (S) |
| Continuous current with air cooling (Ica) | 4.1 A (N), 8.2 A (S) |
4.2 A (N), 10.2 A (S) |
6.1 A (N), 12.7 A (S) |
| Force constant (Kf) | 186 N/A (N), 93 N/A (S) |
225 N/A (N), 93 N/A (S) |
186 N/A (N), 90 N/A (S) |
| Motor constant (Km) | 1750 N²/W | 2150 N²/W | 2580 N²/W |
| Magnet pitch | 24 mm | ||
| Magnetic attraction force (Fa) | 3400 N | 4150 N | 4900 N |
| Weight of the coil (Mp) | 4.9 kg | 5.9 kg | 7.3 kg |
| Air gap | 0.5 mm | ||
| Temperature sensor | PTC 1 kΩ and KTY83-122 | ||
| Corresponding Servo Drive | AX5x06 (N), AX5112 (S) |
AX5x06 (N), AX5118 (S) |
AX5112 (N), AX5118 (S) |
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| Technical data | AL2830 | AL2845 |
|---|---|---|
| Winding type | N | S | |
| Max. speed | 2.5 m/s (N), 6 m/s (S) |
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| Motor configuration | 3-phase synchronous Linear Servomotors (400…480 V AC) | |
| Peak force (FP) | 4500 N | 6750 N |
| Peak current (IPa) | 27 A (N), 66 A (S) |
41 A (N), 98 A (S) |
| Continuous force with water cooling (Fcw) | 2000 N | 3000 N |
| Continuous force with air cooling (Fca) | 1900 N | 2850 N |
| Continuous current with water cooling (Icw) | 8.9 A (N), 21.5 A (S) |
13.4 A (N), 32.3 A (S) |
| Continuous current with air cooling (Ica) | 8.5 A (N), 20 A (S) |
12.5 A (N), 31 A (S) |
| Force constant (Kf) | 225 N/A (N), 93 N/A (S) |
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| Motor constant (Km) | 4300 N²/W | 6450 N²/W |
| Magnet pitch | 24 mm | |
| Magnetic attraction force (Fa) | 8300 N | 12450 N |
| Weight of the coil (Mp) | 11.6 kg, (12.3 kg*) |
18.2 kg |
| Air gap | 0.5 mm | |
| Temperature sensor | PTC 1 kΩ and KTY83-122 | |
| Corresponding Servo Drive | AX5112 (N), AX5125 (S) |
AX5118 (N), AX5140 (S) |
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| Ordering information | AL28xx-000x-000y coil unit |
|---|---|
| AL2812-000x-000y | Linear Servomotor, 400…480 V, Fp = 1800 N, Fca = 760 N |
| AL2815-000x-000y | Linear Servomotor, 400…480 V, Fp = 2250 N, Fca = 950 N |
| AL2818-100x-0000 | Linear Servomotor, 400…480 V, Fp = 2700 N, Fcw = 1200 N, without connector plug, water cooling |
| AL2830-000x-0000 | Linear Servomotor, 400…480 V, Fp = 4500 N, Fca = 1900 N |
| AL2830-100x-0000 | Linear Servomotor, 400…480 V, Fp = 4500 N, Fcw = 2000 N, water cooling |
| AL2845-100x-0000 | Linear Servomotor, 400…480 V, Fp = 6750 N, Fcw = 3000 N, water cooling |
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Option x = 0: N type, x = 1: S type
Option y = 0: without connector plug, y = 1: with connector plugs (only possible with AL2812, AL2815 and AL2818!)
| Ordering information | AL29xx-0000 magnet plate |
|---|---|
| AL2910-0000 | magnetic assembly (lb = 192 mm, weight 10.5 kg/m), for AL28xx motors |
| AL2920-0000 | magnetic assembly (lb = 288 mm, weight 10.5 kg/m), for AL28xx motors |
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