Speedmaster® Inverter Drives

Speedmaster Inverter Drives

LEESON® Speedmaster® inverter drives are feature rich controls offering great process control and operating efficiency for your AC Motors. Our broad family of controls have the solution for your application needs at a competitive price.


 Basic Features  Micro Series   SM-Plus  SM-Basic   SM2 Vector  SM4 Vector  Platinum VSD  Platinum VSD - Plus
 Enclosure Type  IP 31 & IP65/54  IP20 IP20   IP31  IP65  IP21  IP21
 Enclosure Material  Steel  Plastic  Plastic  Plastic  Plastic  Plastic  Plastic
 Number Pre-Set Speeds  4  7  7  8  8  16  16
 Washdown Duty  Yes  No  No  No  Yes  No  No
 FWD & REV  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Password Protected  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Dynamic Brake Kits  Yes  Yes  Yes  No  No  No  Yes
 Relays  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 EPM Programmable  No  Yes  Yes  Yes  Yes  Yes  Yes
 Open Loop Vector  No  No  No  Yes  Yes  Yes  Yes
 Closed Loop Vector  No  No  No  No  No  No  Yes
 PMAC Motor Control  No  No  No  No  No  Yes  Yes
 PID Software  Yes  No  No  Yes  Yes  Yes  No
 Remote Keypads  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Slip Compensation  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Speed Reference Signals  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Display Words or Codes  Words  3-digit  3-digit  4-digit  4-digit  Words & Codes  Words & Codes
 Adjustable carrier frequency  2.5-14 kHz  4-10 kHz  4-10 kHz  4-10 kHz  4-10 kHz  2-16 kHz  2-16 kHz
 DC Braking  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Fault History  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Max. HP @ 460 Volts  150  30  15  60  30  3  30
 Max. HP @ 230 Volts  60  20  15  20  20  3  3
 1 Phase Input/ # Phase Output  Yes  Yes  Yes  Yes  Yes  Yes  Yes
 Output frequency  120  240 Hz  240 Hz  500 Hz  500 Hz  599 Hz  599 Hz


AC/DC Controls 

Quick Reference


DC Adjustable Speed Drives

Speedmaster DC drives for use with SCR rated motors.

Motors 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.


 SM2/SM4 Series Flux Vector Sub-Micro AC Inverters

Speedmaster sensorless vector drives with "big drive" features and ultra-compact size.

SM@-1/2 through 25 HP. IP31 enclosure- NEMA 1 type.

SM4-1/2 through 10HP IP65 NEMA 4.


 SM Series Sub-Micro AC Inverters

Speedmaster adjustable speed drives for simpler applications not requiring the advanced features of the SM-Plus Series.

Models range from 1/3 through 25 HP IP 20 enclosure -  chassis mount.


Micro Series NEMA Enclosed AC Inverters

Speedmaster adjustable speed drives with plain English programming and read-out.

Models range from 1/4 through 150 HP.

NEMA 1 enclosure.


 Micro Series WASHGUARD® AC Inverters

Speedmaster adjustable speed drives in NEMA 4/12 and NEMA 4X enclosures.

Plain-English programming and read-out.

Models range from 1/4 through 125 HP.



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