116
(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
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
Operation when no error is detected
3.4.26 Communication EEPROM write selection (Pr. 342)
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).
Fault description
Pr. 502
Setting
Converter operation
Indication
Fault output
Communication line
0 (initial value), 3
Operation continues
Normal indication
Not output
Communication option
0 (initial value), 3
Operation stops
E.3 lit
Output
Fault description
Pr. 502
Setting
Converter operation
Indication
Fault output
Communication line
0 (Initial setting)
Operation stops
E.OP3 lit
Output
3
Operation continues
Normal indication
Not output
Communication option
0 (initial value), 3
Operation stops
E.3 is lit
Output
Fault description
Pr. 502
Setting
Converter operation
Indication
Fault output
Communication line
0 (Initial setting)
Operation kept stopped
E.OP3 kept lit
Kept output
3
Operation continues
Normal indication
Not output
Communication option
0 (initial value), 3
Operation kept stopped
E.3 kept lit
Kept output
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.
Storage device of the parameter setting can be changed to RAM only from 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
Name
Initial value
Setting range
Description
342
Communication EEPROM write
selection
0
0
Parameter settings written by communication are
written to the EEPROM and RAM.
1
Parameter settings written by communication are
written to the RAM.
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.
HC2.book 116 ページ ２０１２年１１月１９日 月曜日 午前１０時５２分
