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Your benefits

2 speeds in one motor,
allow you to reduce the motion sequences in plants and machines with two or four times the motor speed.

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

Helical gear units R..DR.. Parallel-shaft gearmotors F..DR.. Helical-bevel gearmotors K..DR.. Helical-worm gearmotors S..DR.. Right-angle gearmotors W..DR. Control cabinet technology Control technology

2 speeds with a ratio of 1:2 or 1:4

The pole-changing AC motors with 2 speeds are available as 4/2 and 8/4-pole motors with speeds in a ratio of 1:2 and as 8/2-pole motors with speeds in a ratio of 1:4.

These motors also come from our modular system – take advantage of its benefits: for example, we offer pole-changing AC motors for countries with a 50 Hz or 60 Hz line frequency, with the required voltage of course. Our pole-changing motors naturally come with all the certifications required by international regulations, so you can use them anywhere in the world, for example in Canada (CAS certification), the USA (UR certification) or in China (CCC certification).

We also offer a wide range of additional features so that you can find the perfect drives to match your applications. For example, with three different brake sizes for each motor frame size, you can size the brake to ensure that braking brings the drive to a halt safely and only as fast as necessary.

Our range of pole-changing AC motors mean that you can save time and optimize your motor selection, ordering and delivery processes. As a global player, we make this offer available to you worldwide.
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Brakes and brake control Brake control /DUE diagnostic unit option Surface and corrosion protection Encoder systems Other additional features
  • Simple winding changeover switching gives you two motor speeds
  • Pole-changing motors are a simple and economic option for applications that need "only" 2 speeds
  • Pole-changing motors are not subject to globally applicable efficiency standards, even if only one of the two speeds is continually in use
  • A wide variety of additional features in the SEW‑EURODRIVE modular motor system and various speed ratios (1:2 and 1:4) offer you many potential uses
  • We develop pole-changing motors ourselves according to our own proven modular system and manufacture them according to our own quality standards, even in our series production.

Technical data for example 400 V / line frequency 50 Hz

DR2S.. 4/2-pole motors, speed ratio 1:2

Operation mode S1
Motor type
DR2S.. 		PN
kW 		MN
Nm 		nN
1/min
DR2S 63MR 0.15
0.2 		1,02
0,69 		1400
2785
DR2S 63M 0.2
0.28 		1,39
0,98 		1375
2715
DR2S 71MS 0.25
0.37 		1,71
1,32 		1400
2680
DR2S 71M 0.4
0.63 		2,7
2,2 		1405
2705
DR2S 80M 0.55
0.88 		3,6
2,9 		1452
2880
DR2S 90S 1.2
1.8 		7,8
5,9 		1465
2905
DR2S 100LS 1.5
2.2 		9,8
7,2 		1465
2905
DR2S 100LM 2.5
3 		16,8
10,1 		1425
2850
DR2S 112M 3.3
4 		22,5
13,5 		1410
2825
DR2S 132S 4,4
5.5 		30
18,7 		1400
2815
DR2S 132M 6
7.5 		39
24 		1470
2955
DR2S 132L 8.8
11 		57
35,5 		1465
2952
DR2S 160L 13
15 		84
48,5 		1474
2962
DR2S 180M 18.5
20 		120
65 		1470
2950

Technical data for example 400 V / line frequency 50 Hz

DR2S.. 8/4-pole motors, speed ratio 1:2

Operation mode S1
Motor type
DR2S.. 		PN
kW 		MN
Nm 		nN
1/min
DR2S71S 0.1
0.18 		1.39
1.22 		685
1405
DR2S71M 0.16
0.3 		2.2
2.05 		690
1405
DR2S80MS 0.22
0.4 		2.95
2.65 		710
1450
DR2S90S 0.3
0.6 		3.95
3.95 		725
1458
DR2S90L 0.44
0.88 		6
5.9 		695
1 425
DR2S100LS 0.66
1.3 		8.8
8.5 		717
1452
DR2S100LM 0.9
1.8 		12.1
11.9 		712
1445
DR2S100L 1.1
2.2 		15.4
15 		680
1405
DR2S112M 1.5
3.3 		21
22.5 		690
1395
DR2S132S 2
4.2 		28
29 		680
1390
DR2S132M 2.7
5.5 		35.5
35.5 		730
1471
DR2S160MR 3.8
7.5 		49
48.5 		740
1474
DR2S160M 5.5
10 		72
65 		734
1468
DR2S180M 7.5
15 		97
97 		735
1471
DR2S200L 12
24 		155
155 		740
1478

Technical data for example 400 V / line frequency 50 Hz

DR2S.. 8/2-pole motors, speed ratio 1:4

Operating mode S1
Motor type
DR2S.. 		PN
kW 		MN
Nm 		nN
1/min
DR2S71MS 0.044
0.2 		0.59
0.66 		710
2880
DR2S71M 0.08
0.37 		1.1
1.23 		695
2870
DR2S80MS 0.15
0.6 		2.1
2.1 		675
2720
DR2S80M 0.22
0.9 		3.15
3.15 		665
2745
DR2S90L 0.37
1.6 		5.1
5.3 		695
2870
DR2S100LS 0.5
2.1 		6.6
6.9 		724
2900
DR2S100L 0.65
3 		8.7
9.9 		710
2905
DR2S132S 1.1
4.6 		15.1
15.1 		695
2900

Drive designs
Type Product and catalog designation
IEC foot-mounted motor
 /FI
IEC flange-mounted motor
with bore 		/FF
IEC flange-mounted motor
with thread 		/FT
General flange-mounted motor
(differing from IEC) 		/FL
Integral motor
(Stand-alone motor without gear unit) 		/FG
IEC flange-mounted motor with
bore and IEC foot mountings 		/FE
IEC flange-mounted motor with
thread and IEC foot mountings 		/FY
General flange-mounted motor
(differing from IEC) with foot mountings 		/FK

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

Ventilation
Type Product and catalog designation
Flywheel fan
(made of gray cast iron) 		/Z
Metal fan
(made of aluminum) 		/AL
Without fan
(no fan/non-ventilated) 		/U
B-side closed
(no fan/non-ventilated) 		/OL
Forced cooling fan /V
Canopy /C
Low noise fan guard /LN

Connection
Type Product and catalog designation
SEW-EURODRIVE plug connector /IS or /ISU (only motor-side plug connector)
Harting plug connector:
HAN 10 ES 		/AS.. (with interlocking and wiring diagram specifications)
Harting plug connector:
HAN MODULAR 		/AB..; / AC.., / AD.., / AK, / AM (with interlocking and wiring diagram specifications)
Plug connector (general) /IV
Terminal strip with cage clamp /KCC
Terminal strip with cage clamp for electrified monorail drives /KC1 (C1 profile)

Velocity feedback through encoder mounting
Type Product and catalog designation
Built-in encoders /EI7.
(with number of pulses identifier)
Add-on encoder for DR63 /EH1.
(with electric interface identifier)
Add-on encoder for DRS.. (motor sizes 71 – 132) /ES7., /AS7.
(with electric interface identifier)
Add-on encoder for DRS.. (motor sizes 160 – 225) /EG7., /AG7.
(with electric interface identifier)
Customer-side encoder extension /XV.., /XH..
(with mechanical and electric interface identifier)

Thermal overload identification
Type Product and catalog designation
Three bimetallic switches,
one sensor for each motor phase 		/TH
Three PTC thermistors (PTC resistors),
one sensor for each motor phase 		/TF
Temperature sensor KTY84 – 130 /KY
Temperature sensor PT100 /PT
Three PT100 temperature sensors,
one sensor for each motor phase 		/PT
  • Example 1:
    To limit the mechanical load during startup, the low speed is used and then quickly switched to the high operating speed without stopping. Just before the target, the system initially switches to the lower speed to avoid missing the target position, then the drive is switched off and, in many cases, brought to a complete standstill by a brake (rapid/creep speed positioning). This type of application is used in the horizontal drives and hoists of cranes, for example.
  • Example 2:
    Continually transporting materials in just one direction results in very different load conditions for the drive's two directions of rotation. To optimize the time the no-load return travel takes, the system switches to the higher speed and returns to the start point. This type of application is used in inclined conveyors for building materials, bulk material, etc., or cable cars and rotary tables.
  • Example 3:
    Stepped speeds are used to handle highly variable amounts of transport goods to reduce the strain on machinery and system components. This type of application is used in conveyor belts for building materials, bulk material, packages, etc.
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