Mitsubishi Electric FR-F820-00077 Instruction Manual page 423

Parameters
Analog remote output data retention (Pr. 655)
● When the power supply is reset (including a power failure) while Pr. 655 "Analog remote output
selection" = "0" (initial value) or 10" and, the remote analog output (Pr. 656 to Pr. 659) returns to
its initial value (1000%).
● When Pr. 655 = "1 or 11", the analog remote output data is saved in EEPROM before the power
supply is turned OFF. This means that the analog value output after power restoration is the same
as before the power supply was turned OFF. However, when Pr. 655 = "1", the data is not saved
during an inverter reset (terminal reset, reset request via communication).
● When Pr. 655 = "10 or 11", the analog output before the reset is saved even during an inverter reset.
● When the setting in Pr. 655 is changed, the remote analog output (Pr. 656 to Pr. 659) returns to its
initial value (1000%).
Fig. 5-109:
NOTE When Pr. 655 = "1 or 11" (remote analog output data retention at power OFF), take measures such
as connecting R1/L11 with P/+, and S1/L21 with N/- so that the control power is retained (while
power is supplied to R/L1, S/L2 and T/L3). If the control power is not retained, the analog output
after turning ON the power is not guaranteed to work. When connecting the high power factor
converter FR-HC2, assign the instantaneous power failure detection (X11) signal to an input termi-
nal to input the IPF signal from the FR-HC2 to the terminal for X11 signal.
Parameters referred to
Pr. 54
Pr. 158
Pr. 290
Pr. 291
FR-F800
ON/OFF example for positive logic
Pr. 655 = 0, 10
Power
OFF
supply
Analog
output
Analog output
clear
Signal condition during a reset
Pr. 655 = 0, 1
ON
Reset
Analog
output
* When Pr. 655 = "1", the signal condition saved in EEPROM
(condition of the last power OFF) is applied.
Analog remote output data retention
FM/CA terminal function selection
AM terminal function selection
Monitor negative output selection
Pulse train I/O selection
(M) Monitor display and monitor output signal
Pr. 655 = 1, 11
Power
OFF
supply
Analog
output
Analog
output
saved
Pr. 655 = 10, 11
Reset
Analog
output
∗
Inverter
reset time
(about 1 s)
Analog
output
held
ON
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