VS1PF Bypass Pump and Fan Drive


The VS1PF Bypass is a dedicated Pump/Fan Package with Hand/Off/Auto and Local/Remote Bypass features. Stock ratings up to 40HP 230V or 125HP 460V, this bypass package is powerful and cost competitive. Electronic Bypass can switch to Bypass Mode when a critical fault occurs in the drive allowing the motor to continue to operate.

The VS1PF line of controls offers both V/Hz and Encoderless Vector mode for both Variable Torque (VT) and Constant Torque (CT) applications. Energy Savings mode can reduce kW used by the control when operated on VT loads. The slimline design allows for side-by-side mounting with zero clearance. The PF bypass drive is prewired for quick connections to line, load, and analog/digital inputs. 


  • Nema 1 Enclosure
  • Circuit breaker with lockable disconnect
  • Line reactor rated at 3%
  • Surge Suppression
  • VS1PF Control
  • Thermistor input
  • Class 10 motor overload
  • Hand-Off-Auto selector switch
  • ASD-Off-Bypass
  • Manual potentiometer for hand mode
  • Analog input, voltage or current for auto mode
  • Power on, Fault, ASD, Bypass indicating lights
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