Mitsubishi Electric 800 Series Instruction Manual page 282

(F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
Frequency setting storage
• The remotely set frequency is stored, held, or cleared according to the Pr.59 setting. When the inverter is turned ON again
and the operation is resumed, the setting shown in the parentheses will be applied.
Pr.59 setting Power OFF
1, 11 Stored (stored frequency)
2, 12 Cleared (main speed)
3, 13 Clear (main speed)
• Storage conditions
The remotely-set frequency is stored at the point when the start signal (STF or STR) turns OFF. The remotely-set frequency
is stored every minute after turning OFF (ON) the RH and RM signals together. Every minute, the frequency is overwritten
in the EEPROM if the latest frequency is different from the previous one when comparing the two. This cannot be written
using the RL signal.
NOTE
• 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, 12, 13"). If the frequency setting value storage
function is valid (Pr.59 = "1, 11"), the frequency is written to EEPROM frequently, and this will shorten the life of the EEPROM.
• The range of frequency changeable by acceleration signal (RH) and deceleration signal (RM) is 0 to maximum frequency
(Pr.1 or Pr.18 setting). Note that the maximum value of set frequency is (main speed + maximum frequency).
Pr.1
Main speed setting
Acceleration(RH)
Deceleration(RM)
Forward rotation(STF)
• Even if the start signal (STF or STR) is OFF, turning ON the RH or RM signal varies the preset frequency.
• The RH, RM, or RL signal can be assigned to an input terminal by setting Pr.178 to Pr.189 (Input terminal function
selection).
Changing the terminal assignment may affect other functions. Set parameters after confirming the function of each terminal.
• The inverter can be used in the Network operation mode.
• The remote setting function is invalid during JOG operation and PID control operation.
• The multi-speed operation function is invalid when remote setting function is selected.
When the setting frequency is "0"
• Even when the remotely-set
frequency is cleared by turning
ON the RL (clear) signal after
turning OFF (ON) both the RH
and RM signals, the inverter
operates at the remotely-set
frequency stored in the last
operation if power is reapplied
before one minute has elapsed
since turning OFF (ON) both the
RH and RM signals.
STF/STR signal OFF
Held (stored frequency)
Held (stored frequency)
Cleared (main speed)
(Hz)
The set frequency is clamped at (main speed + Pr.1)
Output frequency is
Set frequency
clamped at Pr.1
Output frequency
0Hz
ON
ON
ON
Remotely-set frequency stored last time
Acceleration (RH)
Deceleration (RM) OFF
Clear (RL)
Forward rotation
Power supply
" "
Pr.59= 1, 2, 3
" "
Pr.59= 11, 12, 13
Time
Within 1 minute
ON
ON
ON
(STF)
ON
Remotely-set frequency stored last time
Time
ON
ON
281
PARAMETERS
5
GROUP
F