Leeson® Industrial AC/DC Controls

Leeson® Industrial AC/DC Controls

In industrial applications, it’s important to have drives that can control the speed of the motor.

These drives are commonly referred to as AC/DC drives and can operate at an adjustable speed.

The benefits of using a variable-speed drive include:

  • Improved energy efficiency – By reducing the motor speed, you can reduce the energy consumption of your motor.
  • Lower operating costs – By reducing energy consumption, you can reduce your operating costs over time.
  • Reduced noise and vibration – By reducing the motor speed, you can also reduce noise and vibration in the motor.
  • Increased flexibility – Variable-speed drives are ideal for applications that require flexibility in speed and torque.
  • Improved performance – Variable-speed drives are ideal for applications that require high-performance levels from the motor.


DC Controls and Drives




Speedmaster™ DC drives for use with SCR rated motors. Models range from sub-FHP through 3 HP. NEMA® 1, NEMA® 4/12 and NEMA® 4X enclosures available. Low voltage controls available through 120 amps @12/24 V and 100 amps @ 36/48 V.

A large variety of Controls and Drives is offered:

Speedmaster™ DC Adjustable Speed Drives – SCR Thyristor Controls

  • PWM and SCR Controls
  • Regenerative Controls

Speedmaster™ DC Adjustable Speed Drives – SCR Controls

  • SCR – 4 Quadrant – Chassis – Regenerative Control
  • 15 Series

DC Speed Controllers

  • Low Voltage Adjustable Speed Controllers
  • Dual Mode – Dual Speed Controllers
  • Control Accessories

AC Controls and Drives




Leeson® AC Drives FHP and FFHP Series





SM2/SM4 Series Flux Vector Sub-MicroAC Inverters

Speedmaster sensorless vector drives with “big drive” features and ultra-compact size. SM2 - 1/2 through 25 HP. IP31 enclosure — NEMA 1 Type. SM4 - 1/2 through 10 HP IP65 NEMA 4.

SM2 Series Flux Vector Series AC Inverters
SM4 Series Flux Vector Series AC Inverters





Platinum e Series AC Inverters

Platinum e Series Drives are for use with an AC induction motor or a PMAC motor. IP20 enclosure protection. 1/3 HP through 30 HP.

Platinum e VSD Series
Platinum e VSD Plus Series
AC Controls Kits



LEESON® Speedmaster inverters are feature rich controls offering great process control and operating efficiency for your AC Motors. With our broad family of controls, we have the solution for your application needs at a competitive price



  SM2 Series Flux Vector Sub-MicroAC Inverters SM2/SM4 Series Flux Vector Sub-MicroAC Inverters Platinum e™ VSD Series Platinum e™ VSD Plus Series
Basic Features SM2 Vector SM4 Vector Platinum e VSD Platinum e VSD Plus

Enclosure Type

IP31

IP65

IP21

IP21

Enclosure Material

Plastic

Plastic

Plastic

Plastic

Number Pre-set Speeds

8

8

16

16

Washdown Duty

No

Yes

No

No

FWD & REV

Yes

Yes

Yes

Yes

Password Protected

Yes

Yes

Yes

Yes

Dynamic Brake Kits

No

No

No

Yes

Relays

Yes

Yes

Yes

Yes

EPM Programmable

Yes

Yes

Yes

Yes

Open Loop Vector

Yes

Yes

Yes

Yes

Closed Loop Vector

No

No

No

Yes

PMAC Motor Control

No

No

Yes

Yes

PID Software

Yes

Yes

Yes

No

Remote Keypads

Yes

Yes

Yes

Yes

Slip Compensation

Yes

Yes

Yes

Yes

Speed Reference Signals

Yes

Yes

Yes

Yes

Display - Words or Codes

4 - digit

4 - digit

Words & Codes

Words & Codes

Adjustable Carrier Frequency

4 -10 kHz

4 -10 kHz

2 -16 kHz

2 -16 kHz

DC Braking

Yes

Yes

Yes

Yes

Fault History

Yes

Yes

Yes

Yes

Max. HP @ 460 Volts

60

30

3

30

Max. HP @ 230 Volts

20

20

3

3

1 Phase Input / 3 Phase Output

Yes

Yes

Yes

Yes

Output Frequency

500 Hz

500 Hz

599 Hz

599 Hz

SM2 Series Flux Vector Sub-MicroAC Inverters SM2 Vector Basic Features IP31 Plastic 8 No Yes Yes No/td> Yes Yes Yes No No/td> Yes Yes Yes Yes 4 - digit 4 -10 kHz Yes Yes 60 20 Yes 500 Hz
SM2/SM4 Series Flux Vector Sub-MicroAC Inverters SM4 Vector Basic Features IP65 Plastic 8 Yes Yes Yes No Yes Yes Yes No No Yes Yes Yes Yes 4 - digit 4 -10 kHz Yes Yes 30 20 Yes 500 Hz
Platinum e™ VSD Series Platinum e™ VSD Basic Features IP21 Plastic 16 No Yes Yes No Yes Yes Yes No Yes Yes Yes Yes Yes Words & Codes 2 -16 kHz Yes Yes 3 3 Yes 599 Hz
Platinum e™ VSD Plus Series Platinum e™ VSD Plus Basic Features IP21 Plastic 16 No Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Words & Codes 2 -16 kHz Yes Yes 30 3 Yes 599 Hz

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