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Frequency setting by external terminals
(1) Remote setting function
⋅ Use Pr. 59 to select whether the remote setting function is used or not and whether the frequency setting storage
function in the remote setting mode is used or not.
When Pr. 59 is set to any of "1 to 3" (remote setting function valid), the functions of the RH, RM and RL signals are
changed to acceleration (RH), deceleration (RM) and clear (RL).
⋅ When the remote function is used, the output frequency of the inverter can be compensated for as follows:
External operation
...Frequency set with RH and RM operation + external operation frequency other than multi-speed
(PU operation frequency when
Pr. 79
= "3" (external, PU combined)) and terminal 4 input.
(When making analog input compensation, set "1" in Pr. 28 Multi-speed input compensation
selection.
When Pr. 28 is set to "0" and acceleration/deceleration is made to reach the set frequency of
the analog voltage input (terminal 2 or terminal 4) by RH/RM, the auxiliary input by terminal 1
becomes invalid.)
PU operation .......... Frequency set by RH/RM operation + PU running frequency
(2) Frequency setting storage
⋅ The frequency setting storage function stores the remotely-set frequency (frequency set by RH/RM operation) into
the memory (EEPROM). When power is switched OFF once, then ON, operation is resumed with that output
frequency value. (Pr. 59 = 1)
<Frequency setting storage conditions>
⋅ Frequency at the point when the start signal (STF or STR) turns off
⋅ Remotely-set frequency is stored every minute after turning OFF (ON) the RH (acceleration) and RM
(deceleration) signals together. (The frequency is overwritten if the latest frequency is different from the
previous frequency when comparing the two. The state of the RL signal does not affect writing.)
CAUTION
⋅ The range of frequency changeable by RH
(acceleration) and RM (deceleration) is 0 to
maximum frequency (Pr. 1 or Pr. 18 setting). Note that
the maximum value of set frequency is (main speed
+ maximum frequency).
⋅ When the acceleration or deceleration signal switches ON, acceleration/deceleration time is as set in Pr. 44 Second acceleration/
deceleration time and Pr. 45 Second deceleration time. Note that when the time set in Pr. 7 or Pr. 8 is longer than the time set in Pr.44
or Pr. 45, the acceleration/deceleration time is as set in Pr. 7 or Pr. 8. (when RT signal is OFF)
When the RT signal is ON, acceleration/deceleration is made in the time set to Pr. 44 and Pr. 45, regardless of the Pr. 7 or Pr. 8
setting.
⋅ Even if the start signal (STF or STR) is OFF, turning ON the acceleration (RH) or deceleration (RM) signal varies the preset
frequency.
⋅ When switching the start signal from ON to OFF, or changing frequency by the RH or RM signal frequently, set the frequency
setting value storage function (write to EEPROM) invalid (Pr. 59 = "2, 3"). If set valid (Pr. 59 = "1"), frequency is written to
EEPROM frequently, this will shorten the life of the EEPROM.
⋅ The RH, RM, RL signals can be assigned to the input terminal using any Pr. 178 to Pr. 189 (input terminal function selection). When
terminal assignment is changed, the other functions may be affected. Set parameters after confirming the function of each
terminal.
⋅ Also available for the Network operation mode.
Deceleration(RM)
Acceleration(RH)
Forward rotation(STF)
0Hz
ON
Time
(Hz)
Main speed setting
Pr.1
The set frequency is clamped at (main speed + Pr.1 )
Output frequency is
clamped at Pr.1
Set frequency
Output frequency
ON
ON