Retry Function - Mitsubishi Electric FR-XC-18.5K-PWM Instruction Manual

Fr-xc series multifunction regeneration converter
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Parameter details
3.5.15
Retry function (Pr.65, Pr.67 to Pr.69)
This function allows the converter the retry operation (automatic reset and restart) after a fault occurred. Faults which
trigger the retry operation can be selected.
Pr.
Name
65
Retry selection
Number of retries at fault
67
occurrence
68
Retry waiting time
69
Retry count display erase
Retry success example
Converter
Pr.68
operation
status
0
Retry starts.
Fault
occurred.
Retry success counter
During retry
ON
signal (RTY)
• When a fault occurs and a protective function is activated while the retry function is enabled, the retry function automatically
deactivates (resets) the protective function and restarts the operation after a lapse of the time set in Pr.68.
• The retry function is enabled when the Pr.67 setting is other than "0." Set the number of retries at activation of the
protective function in Pr.67.
Pr.67 setting
0
The retry function disabled.
1 to 10
Number of times equal to Pr.67 setting
101 to 110
Number of times calculated by subtracting 100 from Pr.67 setting
1001 to 1010
Number of times calculated by subtracting 1000 from Pr.67 setting
1101 to 1110
Number of times calculated by subtracting 1100 from Pr.67 setting
∗1
The RDY signal state during retries by fault is as follows.
Retry-inducing fault
E.A (Overcurrent trip)
E.B (Overvoltage trip)
E.G (Input phase loss)
E.Q (Communication option
fault)
E.8 (Input power supply fault 1)
98
PARAMETERS
Initial value
0
0
1 s
0
Retry succeeded.
(Pr.68×4) s
(6 s at minimum)
Counter
incremented by 1.
Retry times
RDY signal ON state
Held
Held
Held
Held
Held
Setting range
Faults which trigger the retry operation can be
0 to 4
selected. (Refer to the table in the next page.)
0
The retry function disabled.
Set the number of retries at a fault occurrence.
1 to 10
A fault output is not provided during the retry operation.
Set the number of retries at a fault occurrence. (The
101 to 110
setting value minus 100 is the number of retries.)
A fault output is provided during the retry operation.
Set the number of retries at a fault occurrence. (The
setting value minus 1000 is the number of retries.)
1001 to 1010
A fault output is not provided during the retry operation.
The RDY signal is ON during retry.
Set the number of retries at a fault occurrence. (The
setting value minus 1100 is the number of retries.)
1101 to 1110
A fault output is provided during the retry operation.
The RDY signal is ON during retry.
Set the time delay from when a converter fault occurs
0.1 to 600 s
until the retry operation starts.
Setting "0" clears the retry success counter ("retry
0
success" means that the converter successfully
restarts).
Retry failure example
Converter
Pr.68
operation
status
0
Time
First retry
Fault
occurred.
Fault signal
(ALM)
ON
During retry signal
(RTY)
Retry-inducing fault
E.C (Converter overload trip
(electronic thermal relay
function))
E.E (Instantaneous power
failure)
E.F (Undervoltage)
E.H (External thermal relay
operation)
Description
Pr.68
Pr.68
second retry
Third retry Retry failed.
Fault
Fault
occurred.
occurred.
ON
ON
RDY signal ON
Fault output
state during retry
No
Not held
Yes
Not held
No
Held
∗1
Yes
Held
∗1
RDY signal ON state
Not held
Not held
Not held
Not held
Time
(E.K fault)
ON

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