Communication Eeprom Write Selection (Pr. 342) - Mitsubishi Electric FR-HC2-7.5K Instruction Manual

Description of parameters
(3) Converter operation at a communication error (Pr. 502)
How the converter operates at a communication line error or an option unit fault can be set.
Setting description

Operation at an error occurrence
Fault description
Communication line
Communication option
 When the communication returns to normal within the time period set in Pr. 500, the communication option error (E.OP3) does not occur.

Operation at error detection after elapse of Pr. 500
Fault description
Communication line
Communication option

Operation when no error is detected
Fault description
Communication line
Communication option
REMARKS
 Communication line error [E.OP3 (fault data: HA3)] is an error that occurs on the communication line. Communication option
error [E.3 (fault data:HF3)] is an error that occurs in the communication circuit inside the option.
 Fault output indicates the fault output signal (ABC signal) and alarm bit output.
 When the fault output setting is active, fault records are stored in the fault history.
When the fault output setting is not active, fault definition is overwritten to the fault history temporarily but not stored.
After the error is removed, the fault indication is reset, changing the display back to normal, and the last fault is displayed in the fault
history.

3.4.26 Communication EEPROM write selection (Pr. 342)

Storage device of the parameter setting can be changed to RAM only from EEPROM+RAM for the parameter writing
from the RS-485 communication or the CC-Link communication. Use this setting when parameter settings need to be
changed frequently.
Parameter
Number
Communication EEPROM write
342
selection
When changing the parameter settings frequently, set "1" in Pr. 342 to write them to the RAM. The life of the EEPROM will

be shorter if parameter write is performed frequently with the setting unchanged from "0 (initial setting)" (EEPROM write).
REMARKS
 Turning OFF the converter's power supply clears the modified parameter settings when Pr. 342 = "1 (write only to RAM)".
Therefore, parameter settings at next power-ON will be the ones that are last stored to EEPROM.
116
Pr. 502 Setting Converter operation
0 (initial value), 3
0 (initial value), 3
Pr. 502 Setting Converter operation
0 (Initial setting)
3
0 (initial value), 3
Pr. 502 Setting Converter operation
0 (Initial setting) Operation kept stopped
3
0 (initial value), 3 Operation kept stopped
Name Initial value
Operation continues Normal indication
Operation stops
Operation stops
Operation continues Normal indication
Operation stops
Operation continues Normal indication
Setting range
0
0
1
Indication Fault output
Not output
E.3 lit Output
Indication Fault output
E.OP3 lit Output
Not output
E.3 is lit Output
Indication Fault output
E.OP3 kept lit Kept output
Not output
E.3 kept lit Kept output
Description
Parameter settings written by communication are
written to the EEPROM and RAM.
Parameter settings written by communication are
written to the RAM.