frequency after plus minus calculation of analog frequency command . it is in unit of% with the maximum out put frequency taken as 100 % .
the trim control level is valid when the trim control increase command setting 1 c or trim control decrease command setting 1 d is set for a multi function input ( h 1-0 1 to h 1-0 6). if the trim control increase command is on when a frequency reference is input on the analog input , the reference and than output as the output frequency , if the trim control decrease command is on , the frequency reference will be decreased by the trim control level . it is set in unit of % . if the frequency reference minus the trim control level is less than zero , the output frequency will be zero , refer to the description of multi function inputs (h 1) for details on the trim control increase and trim control decrease commands.
FREQUENCY LIMIT .
the frequency limit of torque control , it is in unit of % with maximum output frequency taken as 100% .
in the occasion where d 5-0 3 = 2 , set the frequency limit as a percentage of the maximum frequency . ( the max frequency is 100%.) . the sign of the constant setting and the direction of the run command determine the direction in which the frequency is limited. setting + forward rotation frequency is limited in the forward direction. reverse rotation frequency is limited in the reverse direction . setting – forward rotation frequency is limited in the reverse direction , the speed limited direction , for example , when a positive value is set in d 5-0 4 and the forward rotation command is on , the effective range of the torque control is from zero to the frequency limited value in the forward direction (when constant d 5-0 5,the frequency limit bias is set to 0).setting range is -120~+120, and factory setting is 0 ..
it is used to set the delay time from inputting the multi function input frequency/torque control change (off-on or on-off)until the actual control is changed in unit of MRS.
the timer setting is effective only when 71 (frequency/torque control change)has been set in one of the multi function inputs (h 1-0 1 to h 1-0 6). this setting specifies the delay (0 to 1,000 m s )between a change in the multi function input (on, off or off on )and the corresponding change in the control mode . during the timer delay the value of the 3 analog inputs will retain the values they had when the on/off status of frequency/ torque control switching signal was changed . use this delay to make any preparations for the change in the control mode.
it is used to set the frequency limit bias in unit of 100 % with max , output frequency take as 100%.
setting range is 0~120
factory setting is 10
the frequency limit bias can be used to adjust the margins of the speed limit , when the frequency limit bias is used , it is possible to set the same frequency limit value in both the forward and reverse directions.
set the frequency limit bias as a percentage of the maximum output frequency . (the max .frequency is 100%), for example the following settings establish frequency limits of 50% of the maximum output frequency in both the forward and reverse directions. frequency limit bias setting 50%(d 5-0 5=50).
when a forward frequency limit and a frequency limit bias have been set the frequency range of the torque control is from the – frequency limit bias setting to the frequency limit setting + frequency limit bias setting.in effect the speed limit range is extended by the frequency limit bias in both the forward and reverse directions.
FREQUENCY LIMIT SELECTION .
to set the command method of frequency limit in the event of torque control . 1:,analog frequency command from the analog input limit of terminal 13 or 14 , 2:, to take the value of d 5-0 4 as the limit .
in the event when d 5-0 3=1 , to take the input voltage (h 3-0 1) of frequency command (voltage) terminal 13 as frequency limit when frequency reference (current) terminal 14 has been set to frequency reference by setting constant h 3-0 9 to if this terminal is also used as an input terminal for the frequency limit in this case the actual frequency limit value is the sum of frequency command (voltage) and frequency command (current) . the polarity of the frequency limit signal and the direction of the run command determine the direction in which the frequency is limited .
+voltage input: forward rotation ,frequency is limited in the forward direction reverse rotation ,frequency is limited in the reverse direction , -voltage inputs: forward rotation , frequency is limited in the reverse direction reverse rotation : frequency is limited in the forward direction . the frequency limit value is zero for rotation opposite to the speed limit direction . for example when a + voltage is being input and the forward rotation command is on , the effective range of the torque control is from zero to the frequency limit value in the forward direction (when constant d 5-0 5, the frequency limit bias is set to 0 ). set the signal level to match the speed limit voltage being input.setting range is 1,2 and factory setting is 1 .