Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Communication operation and setting
FR-A700 EC 6 - 455
Retry count setting (Pr. 121, Pr. 335)
Set the permissible number of retries at occurrence of a data receive error. (Refer to page 6-453
for data receive error for retry.)
When data receive errors occur consecutively and exceed the permissible number of retries set,
an inverter alarm (E.PUE) is provided and the output is shut off.
When "9999" is set, an inverter alarm is not provided even if data receive error occurs but a minor
fault output signal (LF) is output. For the terminal used for the LF signal output, assign the func-
tion by setting "98 (source logic) or 198 (sink logic)" in any of Pr. 190 to Pr. 196 "Output terminal
function selection".
쑶
Example
쑴
PU connector communication with different settings of paramter 121
I001354E
Fig. 6-225: Data transmission error
Computer
⇓
Data flow
Inverter
Inverter
⇓
Data flow
Computer
Wrong
PU
Reception error
Alarm E.PUE
Reception error
Wrong
PU connector communication, Pr. 121 = 1 (initial value)
PU connector communication, Pr. 121 = 9999
Reception error
Alarm E.PUE
Reception error
Computer
⇓
Data flow
Inverter
Inverter
⇓
Data flow
Computer
OFF OFF ON
Wrong Wrong Normal