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Two speeds combined in one motor,
to shorten motion sequences in systems and machines with two or four times the rotational speed of the motor.

Can be used worldwide
because our pole-changing motors also have all the certifications required by international approvals.

Helical gearmotors R..DR.. Flat gearmotors F..DR.. Helical-bevel gearmotors K..DR.. Worm gearmotors S..DR.. W..DR. right-angle gearmotors Control cabinet technology Control technology

Two speeds in a ratio of 1:2 or 1:4

We offer pole-changing AC motors with 2 rotational speeds in the following sizes and versions DR63 and DRS. sizes and designs. as 4/2- and 8/4-pole motors with a speed ratio of 1:2 and as 8/2-pole motors with a speed ratio of 1:4 (DRS.. only).

These motors also come from our modular system - take advantage of its benefits: for example, we offer the pole-changing AC motors for countries with 50 Hz or 60 Hz line frequency and, of course, with the necessary stress. Of course, the pole-changing motors also have all certifications in accordance with the requirements of international approvals so that you can use them worldwide, e.g. in Canada (CSA approval), the USA (UR approval) or China (CCC approval).

A wide range of additional features completes our quotation so that you can find the exact drives you need for your applications and uses. For example, thanks to up to three different brake sizes per motor size, you can dimension the brake in such a way that braking brings the drive to a stop safely and only as quickly as necessary.

With our quotation of pole-changing AC motors, you save time and optimize your processes - in motor selection, the ordering process and logistics. As a global player, we make this quotation available to you in 54 countries around the world.
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Learn more Brakes BE.. Brake control Diagnostics units option /DUE Surface and corrosion protection Encoders Other additional features
  • Two speeds are achieved in the motor by simply changeover switching the windings
  • Pole-changing motors are a simple and economical alternative for applications that "only" require two speeds
  • Pole-changing motors are not subject to the globally applicable efficiency specifications, even if only one of the two speeds is permanently in use
  • A wide range of additional features of the SEW-EURODRIVE modular motor system and different speed ratios (1:2 and 1:4) enable many application perspectives
  • Pole-changing motors are developed in-house according to our proven modular system and are also manufactured in our own series production in accordance with our quality standards

TD using the example of 400 V / line frequency 50 Hz

DR63.., 4/2-pole, ratio 1:2

Operating mode S1
Motor type
DR63 		PN
kW 		MN
Nm 		nN
1/min 		IN
A
DR63M 4/2 0.15
0.2 		1.05
0.71 		1 370
2 710 		0.55
0.53
DR63L 4/2 0.2
0.28 		1.39
0.99 		1 370
2 710 		0.67
0.67

TD using the example of 400 V / line frequency 50 Hz

DRS.., 8/4-pole, ratio 1:2

Operating mode S1
Motor type
DRS.. 		PN
kW 		MN
Nm 		nN
1/min 		IN
A
DRS71S 8/4 0.1
0.18 		1.39
1.23 		685
1 400 		0.49
0.52
DRS71M 8/4 0.16
0.3 		2.25
2.05 		685
1 400 		0.71
0.79
DRS80M 8/4 0.22
0.4 		2.95
2.65 		710
1 440 		0.98
0.98
DRS90M 8/4 0.3
0.6 		4.05
4 		710
1 440 		1.44
1.42
DRS90L 8/4 0.44
0.88 		6
5.9 		700
1 425 		1.9
1.98
DRS100M 8/4 0.66
1.3 		9.1
8.7 		690
1 420 		2.65
2.9
DRS100L 8/4 0.9
1.8 		12.5
12.2 		690
1 410 		3.5
4
DRS112M 8/4 1.2
2.2 		17
15.1 		675
1 390 		4.2
4.6
DRS132S 8/4 1.6
3.3 		22.5
23 		680
1 385 		5.8
6.8
DRS132M 8/4 2.1
4.2 		29.5
29 		680
1 390 		7
8.6
DRS160S 8/4 2.7
5.5 		35.5
35.5 		725
1 470 		9.2
11
DRS160M 8/4 3.8
7.5 		49.5
48.5 		730
1 470 		12.9
15
DRS180S 8/4 5.5
10 		75
65 		730
1 465 		17.4
18.7
DRS180L 8/4 7.5
15 		97
97 		135
1 470 		22.5
27.5
DRS200L 8/4 11
22 		143
142 		735
1 475 		35
41.5
DRS225S 8/4 14
28 		182
181 		735
1 475 		45
52
DRS225M 8/4 18
34 		230
220 		740
1 475 		57
63

TD using the example of 400 V / line frequency 50 Hz

DRS.., 8/2-pole, ratio 1:4

Operating mode S3 40/60 %
Motor type
DRS.. 		PN
kW 		MN
Nm 		nN
1/min 		IN
A
DRS71S 8/2 0.06
0.5 		0.84
0.83 		685
2 870 		0.48
0.98
DRS71M 8/2 0.1
0.4 		1.43
1.34 		670
2 840 		0.66
1.04
DRS80S 8/2 0.15
0.6 		2.15
2.1 		670
2 710 		0.95
1.9
DRS80M 8/2 0.22
0.9 		3.1
3.1 		680
2 780 		1.15
2.4
DRS90M 8/2 0.3
1.3 		4.05
4.3 		710
2 880 		1.41
3.3
DRS90L 8/2 0.45
1.8 		6
5.9 		720
2 905 		2.5
4.7
DRS100M 8/2 0.6
2.4 		8.1
7.9 		710
2 890 		3.1
5.4
DRS112M 8/2 0.8
3 		10.8
10.4 		710
2 750 		4.2
6.7
DRS132M 8/2 1.1
4.6 		14.8
15.7 		710
2 800 		4.6
8.5

Drive versions
Type Product and catalog designation
IEC foot-mounted motor
 /FI
IEC flange motor
with bore 		/FF
IEC flange motor
with thread 		/FT
General flange motor
(IEC deviating) 		/FL
Integral motor
(stand-alone motor without gear unit) 		/FG
IEC flange motor with
bore and IEC feet 		/FE
IEC flange motor with
thread and IEC feet 		/FY
General flange motor
(IEC deviating) with feet 		/FK

Mechanical attachments
Type Product and catalog designation
Brake /BE.. (with size specifications)
Manual brake release /HF or /HR
Backstop
(locking without direction of rotation) 		/RS
B-side shaft end,
2nd shaft end 		/2W
Drain opening(s) for
condensation 		/DH

Ventilation
Type Product and catalog designation
Flywheel fan
(made of gray cast iron) 		/Z
Metal fan
(made of aluminium) 		/AL
Without fan
(fanless / non-ventilated) 		/U
B-side closed
(fanless / non-ventilated) 		/OL
Forced cooling fan /V
Canopy /C
Noise-reduced fan guard /LN

Connection
Type Product and catalog designation
SEW-EURODRIVE plug-in connection /IS or /ISU (only plug-in connection on the motor side)
Plug-in connection from Harting:
HAN 10 ES 		/AS.. (with details of interlocking and wiring diagram)
Plug-in connection from Harting:
HAN MODULAR 		/AB..; / AC.., / AD.., / AK, / AM (with details of interlocking and wiring diagram)
Plug-in connections (general) /IV
Terminal block with cage clamp /KCC
Terminal block with cage clamp, e.g. for electrified monorail drives /KC1 (C1 profile)

Speed feedback through encoder mounting
Type Product and catalog designation
Built-in encoder /EI7.
(with identification of the number of pulses)
Add-on encoder for DR63 /EH1.
(with identification of the electrical interface)
Add-on encoder for DRS.. (motor size 71 - 132) /ES7., /AS7.
(with identification of the electrical interface)
Add-on encoder for DRS.. (motor size 160 - 225) /EG7., /AG7.
(with identification of the electrical interface)
Attachment of encoders by the customer /XV.., /XH..
(with identification of the mechanical and electrical interface)

Thermal overload detection
Type Product and catalog designation
Three bimetallic switches,
one sensor per motor phase 		/TH
Three PTC thermistors (PTC resistors),
One sensor per motor phase 		/TF
One temperature sensor KTY84 - 130 /KY
One temperature sensor PT100 /PT
Three temperature sensors Pt100,
one sensor per motor phase 		/PT
  • Example 1:
    To limit the mechanical load when starting, the low speed is used and then switched to the high operating speed promptly without stopping. In order not to miss the target positions, the drive is first switched back to the lower speed shortly before the target, then switched-off and often brought to a complete idle state with a brake (rapid/creep speed positioning). This application can be found in travelling gears and vertical drives of cranes, for example.
  • Example 2:
    Continuous material transport in only one direction leads to a large difference in the direction of rotation of the drive. To optimise the timing of the empty return journey, the drive switches to the higher speed and returns to the starting point. This application can be found, for example, in inclined conveyors for building materials or bulk materials, ropeways and rotary tables.
  • Example 3:
    A widely varying volume of transported goods is countered with a stepped speed, thus reducing the load on machines and system parts. This application can be found in conveyor belts for building materials, bulk materials or packages, for example.
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