Restarting Operation After Transient Error (Auto Restart Function) - YASKAWA CIMR-G7U Technical Manual

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Restarting Operation After Transient Error (Auto Restart Function)

If a Drive error occurs during operation, the Drive will perform self-diagnosis. If no error is detected, the
Drive will automatically restart. This is called the auto restart function.
Set the number of auto restarts in parameter L5-01.
The auto restart function can be applied to the following errors. If an error not listed below occurs, the protec-
tion function will operate and the auto restart function will not.
• OC (Overcurrent)
• GF (Ground fault)
• PUF (Fuse blown)
• OV (Main circuit overvoltage)
• UV1 (Main Circuit Undervoltage, Main Circuit MC Operation Failure)
• PF (Main circuit voltage fault)
• LF (Output phase failure)
* When L2-01 is set to 1 or 2 (continue operation during momentary power loss)
Auto Restart External Outputs
To output auto restart signals externally, set H2-01 to H2-05 (multi-function contact output terminals M1-M2,
M3-M4, M5-M6, P3-C3, and P4-C4 function selection) to 1E (auto restart).
Related Parameters
Parameter
Number
Number of
Auto Restart
Attempts
L5-01
Num of
Restarts
Auto Restart
Operation
Selection
L5-02
Restart Sel
 Application Precautions
The number of auto restarts count is reset under the following conditions:
•
After auto restart, normal operation has continued for 10 minutes.
After the protection operation has been performed, and the error has been verified, and an fault reset
has been input.
After the power supply is turned OFF, and then ON again.
-66
Do not use the auto restart function with variable loads.
•
6
Name
Description
Display
Sets the counter for the number of
times the Drive will perform an
automatic restart on the following
faults: GF, LF, OC, OV, PF, PUF,
RH, RR, OL1, OL2, OL3, OL4,
UV1. Auto restart will check to see
if the fault has cleared every 5ms.
When no fault is present, the Drive
will attempt an auto restart. If the
Drive faults after an auto restart
attempt, the counter is incremented.
When the Drive operates without
fault for 10 minutes, the counter
will reset to the value set in L5-01.
Determines if the fault contact
activates during an automatic
restart attempt.
0: No Fault Relay - fault contact
will not activate during an
automatic restart attempt.
1: Fault Relay Active - fault
contact will activate during an
automatic restart attempt.
• RH (Braking resistor overheated)
• RR (Braking transistor error)
• OL1 (Motor overload)
• OL2 (Drive overload)
• OH1 (Motor overheat)
*
• OL3 (Overtorque)
• OL4 (Overtorque)
Change
Setting Factory
during
Range Setting
V/f
Operation
0 to 10 0 No A
0 to 1 0 No A
Control Methods
Open Open
V/f
Loop Flux Loop
with
Vector Vector Vector
PG
1 2
A A A A
A A A A