Mitsubishi Electric FR-A820-00046 Instruction Manual page 429

Parameters
Output frequency
● During External operation, the remotely-set frequency set with RH and RM signals is added to the
terminal 4 input and External operation mode frequency (PU operation mode frequency when
Pr. 79 = "3" (External and PU combined operation)) except multi-speed setting. (When compen-
sating analog input, set Pr. 28 "Multi-speed input compensation selection" = "1". If the RH and RM
signals are used for acceleration/deceleration while the frequency is set by analog voltage input
(terminal 2 or 4, selected by Pr. 28 = "0"), the auxiliary input via the terminal 1 is disabled.)
● During PU operation, the remotely-set frequency set with RH and RM signal operation is added
to the PU running frequency.
Frequency setting storage
● When Pr. 59 = "1, 11", the remotely-set frequency (frequency set by RH/RM operation) is stored to
the memory (EEPROM). When power is switched OFF once, then ON, operation is resumed with
the stored set frequency.
● When Pr. 59 = "2, 3, 12, 13", the set frequency is not stored, so when switching the power ON again
after being switched OFF, the remotely-set frequency becomes 0 Hz.
● The remotely-set frequency is stored 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 and RM signals
together. Each 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 with RL signals.
NOTE When switching the start signal from ON to OFF, or changing frequency by the RH or RM signal fre-
quently, 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.
Clearing the settings
When Pr. 59 = "1, 2, 11, 12" and the clear signal (RL) is turned ON, the remotely-set frequency is cleared.
When Pr. 59 = "3, 13" and the STF (STR) signal is turned OFF, the remotely-set frequency is cleared.
NOTES 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 fre-
quency.
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.
FR-A800
(F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
The set frequency is clamped at (main speed + Pr. 1)
(Hz)
Output frequency is
clamped at Pr. 1
Pr. 1
0Hz
ON
ON
Set frequency
Output frequency
Pr. 59 = "1, 2, 3"
Pr. 59 = "11, 12, 13"
Time
ON
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