Mitsubishi Electric FR-A740-00023 Instruction Manual page 175

(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
⋅ The remotely-set frequency is stored every one minute after one minute has elapsed since turn off (on) of both
the RH (acceleration) and RM (deceleration) signals. (The frequency is written if the present frequency setting
compared with the past frequency setting every one minute is different. The state of the RL signal does not
affect writing.)
CAUTION
⋅ The
range of frequency
(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 long time has been set in Pr. 7 or Pr. 8, 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. Please make setting after confirming the function of each
terminal.
⋅ Also available for the network operation mode.
changeable by RH
Main speed setting
Acceleration(RH)
Deceleration(RM)
Forward rotation(STF)
Frequency setting by external terminals
(Hz)
The set frequency is clamped at (main speed + Pr.1 )
Output frequency is
Set frequency
clamped at Pr.1
Pr.1
0Hz
ON
ON
ON
Output frequency
Time
165
4