P109: V/F Maximum Voltage; P110: V/F Fundamental Frequency; P111: V/F Intermediate Voltage; P112: V/F Intermediate Frequency - Janson Controls FC100 Series Manual

FC100 Series User Manaul
Chapter 6 Description of parameter setting
Parameters from P109 to P114 determine the V/F curve of inverter. Set
corresponding V/F curves according to different loads. Constant torque curve:
application for constant torque load, output voltage and output frequency are in
linear relation.
Down (variable) torque curve: application for variable torque load, like fan and
pump. Load will increase with the increase of rotation speed.
High start torque curve: application for heavy load and load need high starting
torque.
P109: V/F maximum voltage, V/F maximum voltage can be set according to the
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motor connected. Generally, it will be set at the rated voltage of motor. When
motor is very near to inverter, usually within 30m, it should be set at a higher
value.

P110: V/F fundamental frequency

V/F fundamental frequency, please set it at the running voltage frequency of
motor. Generally, do not change V/F fundamental frequency setting; or else, it is
very likely to damage motor.

P111: V/F intermediate voltage

Set V/F intermediate voltage according to the specific load. Improper setup can
cause over current of motor or insufficient torque output, or even cause inverter
protection. Increasing the value of P111 can increase output torque and output
current. Please monitor output current while changing the value of P111. While
changing the value of P111, adjust the value slowly until the necessary output
torque is reached. Too higher setting may cause inverter protection or fault.

P112: V/F intermediate frequency

V/F intermediate frequency determines the intermediate point of V/F curve.
Improper setup can cause insufficient torque or over current protection of
inverter. Generally, do not change the setup value of this parameter while using.
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