Operation Mode Is Not Changed Properly; Control Panel Display Is Not Operating; Power Lamp Is Not Lit; Parameter Write Cannot Be Performed - Mitsubishi Electric FR-E540 K-EC Series Instruction Manual

5.2.8 Operation mode is not changed properly

If the operation mode does not change correctly, check the following:
1. External input signal ...Check that the STF or STR signal is off.
2. Parameter setting .......Check the Pr. 79 setting.

5.2.9 Control panel display is not operating

Make sure that the control panel is connected securely with the inverter.

5.2.10 POWER lamp is not lit

Make sure that the wiring and installation are correct.

5.2.11 Parameter write cannot be performed

Make sure that operation is not being performed (signal STF or STR is not ON).
Make sure that you pressed the
Make sure that you are not attempting to set the parameter outside the setting
range.
Make sure that you are not attempting to set the parameter in the external
operation mode.
Check Pr. 77 "parameter write inhibit selection".
When it is on, the operation mode cannot be changed.
When the setting of Pr. 79 "operation mode selection" is
"0", switching input power on places the inverter in the
external operation mode. By pressing the
times, the external operation mode changes into the PU
operation mode. For any other setting (1 to 8), the
operation mode is limited according to the setting.
(For details of Pr. 79, refer to page 105.)
key (
SET
WRITE
167
PROTECTIVE FUNCTIONS
MODE
key) for longer than 1.5 seconds.
key three
5