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Mitsubishi Electric FR-CS84-012 Instruction Manual Page 176

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Data check time
Item
Monitoring, operation command, frequency
setting (RAM)
Parameter read/write, frequency setting
(EEPROM)
Parameter clear / All parameter clear
Reset command
 Retry count setting (Pr.121, Pr.335)
• Set the permissible number of retries at data receive error occurrence. (Refer to
• When the data receive errors occur consecutively and the number of retries exceeds the permissible number setting, a
communication fault (PU connector communication: E.PUE) occurs and the inverter output is shut off.
• When a data transmission error occurs while "9999" is set, the inverter does not shut off power output and outputs the
Alarm (LF) signal. To use the LF signal, set "98 (positive logic) or 198 (negative logic)" in
to assign the function to an output terminal.
selection)
Example: PU connector communication, Pr. 121 = "1" (initial value)
Computer
Inverter
Inverter
Computer
ALM
Example: PU connector communication, Pr. 121 = "9999"
Computer
Inverter
Computer
Inverter
LF
ALM
Check time
Less than 12 ms
Less than 30 ms
Less than 5 s
No reply
Illegal
Reception error
Illegal
OFF
page 173
Fault (E.PUE)
Illegal
Reception error
ON
Illegal
Reception error
Reception error
ON
ON
OFF
5.11 (N) Communication operation parameters
for data receive error for retry.)
Pr.195 (Output terminal function
Normal
5. PARAMETERS
2
2
3
4
5
6
7
8
9
10
175

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