Mitsubishi Electric 800 Series Instruction Manual page 200

• 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).
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.
Remotely-set frequency stored last time
Acceleration (RH)
Deceleration (RM) OFF
Forward rotation
Power supply
(Hz)
The set frequency is clamped at (main speed + Pr.1)
Output frequency is
Set frequency
clamped at Pr.1
Output frequency
Pr.1
0Hz
ON
ON
ON
Within 1 minute
ON
ON
Clear (RL)
ON
(STF)
ON
5.5 (F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
Pr.59= " 1, 2, 3 "
Pr.59= " 11, 12, 13 "
Time
Remotely-set frequency stored last time
Time
ON
ON
3
4
5
5
5
6
7
8
9
10
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5. PARAMETERS