Mitsubishi Electric FR-D720S SC EC Instruction Manual page 100

Operation panel
Operation Mode
PU Modes
External operation mode
Combined operation
mode 1
Combined operation
mode 2
Tab. 4-4: Operation modes and operation panel indication
Possible faults:
● "Er1" ("Write disable error") is displayed
– Parameter write is disabled with "1" set in Pr. 77.
● "Er2" is displayed
– Setting can not be made during operation. Stop the motor with the STOP/RESET key or
by switching off the STR/STF signal.
● The priorities of the frequency commands when Pr. 79 = "3" are: "Multi-speed operation
(RL/RM/RH/REX) > PID control (X14) > terminal 4 analog input (AU) > digital input from the
operation panel".
4 - 12
Operation Panel Indication
Flickering
Flickering
Flickering
Flickering
Flickering
Flickering
Flickering
Flickering
Operation Method
Start Command Frequency Command
External (Analog signal at
(STF-, STR) terminal 2 (voltage) or
External
(STF-, STR)
(Analog signal at
terminal 2 (voltage) or
Operation
External
4 (current))
External
4 (current))