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SL Series

Analogue 2Q / 4Q DC Drives delivering output current up to 330A to control motors up to 145kW

Economical, compact and reliable DC motor control ideal for OEMs

A range of analogue 2Q / 4Q DC Drives, you can use the SL Series to control DC motors up to 145kW, with all models available from stock.

The SL Series comprises a range of analogue 2Q / 4Q DC Drives delivering output current up to 330A to control motors up to 145kW. For users who prefer or require analogues control loops, the SL Series provides an economical, compact and reliable control platform. The SL/X range provides 2Q / 4Q operation across 11 models from 5kW – 145kW output power. The SLE Series is a single direction 2Q DC Drive with 4 models from 14kW – 44kW output power.

Compact, Reliable & Economical

The SLE drive has been specifically designed at a cost and size to benefit OEMs without any compromise in specification, reliability or performance.
Its compact footprint (250mm x 204mm) enables additional savings and ensures easy integration within new designs or trouble free installation when retrofitting

Energy Efficient

The 4Q models improve your energy efficiency by regenerating energy into the mains supply whilst under braking. The energy invested accelerating the load mass is recovered when braking. No dissipation of energy in wasteful braking resistors. With fully isolated control electronics and a wealth of I/O, the SL/X is easy for you to integrate with other drives and equipment. The SL/X has a built-in field weakener for extended speed range to allow you greater control of high motor speed applications.

Other Features & Benefits


2 and 4 Quadrant versions available
Available from 5KW to 145KW
Extra 50% peak torque for rapid acceleration or shock loads
Zero reference interlock facility ideal for extruder applications
Numerous alarms for enhanced drive and motor protection
Torque control input for basic winding or tension control, with overspeed limiting
Output signals for easy display of motor speed and load
Switched maximum current ranges for easy matching to motor current rating
Compact size, saves panel space and makes for easy retrofitting
Ultra stable
 potentiometer reference for optimum long term speed and torque stability
On board relay indicates zero speed and/or motor overload (and some models – stall)
Isolated control electronics for easy connection to other drives/equipment


Many additional input and output signals, ideal for system applications
User adjustable:

  • Acceleration
  • Deceleration
  • Max motor speed
  • Min motor speed
  • Max motor current
  • IR compensation
  • Stability
  • Jog speed

Adjustable field output for easy motor matching
Built in field weakener for extended speed range
Configurable field bridge for easy motor field voltage matching
240V and 480V 50/60HZ AC operation
User selectable wide AC supply range, 380 – 480V or 200-240V

High accuracy armature voltage feedback mode eliminates the need for additional tacho
Automatic economy field mode protects motors in cold climates
PLC compatible input and output signals
Field current input for constant horsepower applications
Delayed field quench for secure emergency stopping
Switch selectable feedback calibration – no component changes
Switch selectable Tach
or Armature voltage feedback
Numerous inputs and outputs for complex system applications
S ramp facility
4-20mA and 0-20mA loop input option as standard


Where DC Digital Drives are used

Sprint Electric Guide Where DC Digital Drives are used

SLE product datasheet

English version manual for the SLE

SLX product datasheet

Datasheet for SL/X range of analogue DC drives

PLX JLX Three Phase catalogue Sprint Electric

Single Phase DC Motor Control Product Catalogue

A4 catalogue of our range of single phase DC motor controllers HA105134 v5

SL Manual

SL Product Manual by Sprint Electric - UG101489 ISS6
Analogue 2Q DC Drive

SLE Product Manual

SLE Product Manual by Sprint Electric - UG101845 ISS4 Analogue 2Q DC Drive

SLX Product Manual

SLX Product Manual by Sprint Electric - UG101528 ISS6
Analogue 4Q DC Drive


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