When setting Motor Parameters for a VSD or Solar Drive it includes a Frequency parameter (d0-03 for VSDs and F1-04 for Solar Drives) which is used to specify the Motor Rated Frequency. In the event that there is a requirement to run a motor slower/faster than its rated frequency (default = 50Hz) or limit it to prevent from running slower than a specified minimum target speed (more than the 0Hz default), the following parameters should be set – the first parameter is for VSDs (and Solar Drives with Double Line Keypad Displays) and the second parameter is for Solar Drives (with Single Line Keypad Displays):
- d0-03 / F1-04 = Rated Frequency of the motor (see motor nameplate)
- b0-12 / F0-08 = Digital/Preset Frequency Setting (default 50Hz, but cannot be set as more than b0-13/F0-10 if that were modified) – Initial frequency if the frequency source is digital setting or terminal Up/Down.
- b0-13 / F0-10 = Maximum Frequency (default 50Hz) – the Maximum Frequency that should be allowed for the Motor at any given time (irrespective of what means of input is used to set the Frequency). Minimum =50hz, so only required to set for motors that needs to run at a higher frequency.
- b0-15 / F0-12 = Frequency Upper Limit (default = 50Hz, but cannot be set as less than b0-17/F0-14 or more than b0-13/F0-10 if that were modified), to prevent the motor from running too fast.
- b0-17 / F0-14 = Frequency Lower Limit (default = 0Hz, but cannot be set as more than b0-15/F0-12 if that were modified), to prevent the motor from running too slow.
