Fans and pumps

Startup of pumps and fans

  1. Start up and parameterize the connected motor type using the control mode intended for it, see chapter Startup with motors. For asynchronous motors, use U/f control.
    • The slip compensation must remain deactivated (P1-10 = 0).
  2. Set the ramps P1-03 and P1-04 to the most sensible values possible.
    • The difference between acceleration and deceleration must be as small as possible.
  3. In the case of freely rotating fans or pumps, always activate the flying start function P2-26 = 1 if they are operated with asynchronous motors.
  4. If the process does not require an overload, limit P4-07 and P4-09 to 110%. Individual adjustment to a maximum of 150% might be necessary.
  5. Do not manually change any values in parameter group 7. These parameters may only be changed by experts and only when necessary.

 

Other functions for applications with pumps or fans

The following functions are additionally available for applications with pumps or fans:

  • Voltage increase/boost (P1-11)
  • Adjustment of the U/f characteristic curve (P4-10, P4-11)
  • Energy-saving function (P1-06)
  • Overload management (P4-18)
  • Zero speed holding time (P2-23)
  • Standby mode (P2-27)
  • Skip frequency with resonance vibrations (P2-09, P2-10)
  • PID controller, see Parameter group 3: PID controller (level 2)
  • Fire mode/emergency mode, see Fire mode/emergency mode