apfiff09 marine vacon • 8524- 67.2.3 Power ReferenceThe Power reference mode allows the motor to operate at constant power while speed and torqueare changing giving steady load for the generators in changing conditions.This also gives a fast response for thrusters as torque is increased rapidly after increase of powerreference thus making speed of the thrusters to speed up fast to new reference.Pure speed control where ramp times are tuned slow to limit fast power changes on higher speedsmakes response slow especially when starting from zero speed where thrusters do not createthrust.The change between power reference mode and speed controller mode is made by changing motorcontrol modes between speed and torque control.Note: Do not change between open loop and closed loop control modes while the drive is run state.- P2.8.1 Motor Control Mode; Speed control modes- P2.8.2 Motor Control Mode 2; Torque control modes- DI Motor Control mode 1/2; Selection between speed and power control mode-In power reference mode the drive is operating in torque control mode. Therefore, the torquereference selector needs to be set to value 10 (Power reference) where given power reference isconverted to torque reference for the motor control.MUXKIN 0IN 1IN 2IN 3IN 4IN 5IN 6IN 7IN 8IN 9P Power Ref. SelF Analogue Input 1F Analogue Input 2F Analogue Input 4F Analogue Input 3V Power ReferenceF FieldBusReferenceF Keypad RefereceF AI2 JoustckF AI1 JoystickV Power ReferenceSelection 7 and 8 do not use MaxScalingMULXXP Power Ref. MaxRAMP10STOP OUTSETDATASPEEDINLTIN 1IN 2P PowerRefInc.RatePower_Reference_Final
