This item is now discontinued. We recommend the following as suggested replacements: EW-07528-10

Masterflex L/S variable-speed drive with 10-turn speed control and remote capability, 6 to 600 rpm, 115 VAC.

Representative image only.
Masterflex Item # EW-77521-40
Easy-to-use analog drives offer precise speed control and remote control capability – ideal for metering, feed, and transfer applications.
  • 10-turn potentiometer for precise, accurate speed control. Locking lever enables you to lock in your exact speed setting.
  • Separate speed control and on/off/reverse switch with inertia center and green LED power indicator. Maintain speed setting while turning pump on/off.
  • Remote control capabilities via DB9 female connector on back of drive — speed control input: 4 to 20 mA, or 2 to 10 VDC; start/stop via open collector or contact closure.
  • Reversible motor — purge tubing before or after pumping; pump fluid in either direction.
  • The 1/10-hp reversible motor has soft start and back EMF for ±2% speed control. Promotes smooth operation and long service life.

SPECS & DESCRIPTION

Specifications & Description

  • Pump SeriesL/S
  • Control TypeVariable speed
  • SpeedVariable
  • Speed Control±2% (10-turn speed control)
  • Max Flow Rate (mL/min)3400
  • Min Flow Rate (mL/min)0.36
  • Reversible MotorYes
  • No. of Pump Heads Accepted2
  • Type of Pump Heads AcceptedStandard, Easy-Load, Easy-Load II, Quick Load, High Performance, Cartridge, Multichannel, PTFE Tubing, PTFE Diaphragm
  • Motor (watts)75
  • Drive IP ratingIP 23
  • Power (VAC)90 to 130
  • Power (amps)1.5
  • Drive Length (in)11.5
  • Drive Width (in)7
  • Drive Height (in)7
  • Drive Length (mm)292
  • Drive Width (mm)178
  • Drive Height (mm)178
  • Motor hp1/10
  • DescriptionL/S variable-speed drive with 10-turn speed control and remote capability, 6 to 600 rpm, 115 VAC.
Two year warranty

Key Features

  • 10-turn potentiometer for precise, accurate speed control. Locking lever enables you to lock in your exact speed setting.
  • Separate speed control and on/off/reverse switch with inertia center and green LED power indicator. Maintain speed setting while turning pump on/off.
  • Remote control capabilities via DB9 female connector on back of drive — speed control input: 4 to 20 mA, or 2 to 10 VDC; start/stop via open collector or contact closure.
  • Reversible motor — purge tubing before or after pumping; pump fluid in either direction.
  • The 1/10-hp reversible motor has soft start and back EMF for ±2% speed control. Promotes smooth operation and long service life.
  • Stackable ABS plastic housing is IP23 rated for splash resistance and easy wipedown.
  • 6-ft (1.8-m) line cord

More About this Item

These analog drives are engineered for reliability and ease of use — ideal for integration into lab or process applications requiring precise flow control. Remote speed control requires DB9 male connector 07595-45. Use connector 07595-45 also for remote control of start/stop via contact closure or open collector (5 V TTL); or control start/stop via footswitch 77595-35.

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