Fuji Electric FRENIC-Ace series, User Manual

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5.3 Description of Function Codes
5-213
FU
NCT
IO
N
C
O
DE
S
Chap 5
[ 5 ] Overload stop function
J63
J64
J65
J66
J67
Overload stop function (Item selection)
(Detection level)
(Mode selection)
(Operation mode)
(Timer)
Detects an overload status and if it exceeds the specified detection level (J64) for the specified timer duration (J67),
the operation is stopped based on the selected action (J65). It is used to protect the system when an unacceptable
overload is applied or to lock the motor shaft by mechanically hitting it to the stopper.
■
Item selection (J63)
Select a target (detected item) to monitor the load status.
J63 data Detected value Function overview
0 Torque Select the driving torque as the target.
To improve the accuracy of calculated torque, perform auto-tuning.
1 Current Select the driving current as the target.
The no-load current always flows to the motor. Specify J64 (Detection level)
correctly considering the no-load current of the applied motor.

Detection Level (J64)
Set the value for overload detection level in percentage (%) of the motor rated torque or current.

Mode Selection (J65)
Select an operation when the load exceeds the value specified in J64.
J65 data Action Function overview
0 Disable Overload stop function operation cancellation
1 Decelerate to stop Decelerates to stop the motor, as specified in deceleration time.
2 Coast to stop Immediately shuts down the inverter, allowing the motor to coast to a stop.
• When the overload stop facility is enabled and an overload is detected, the inverter turns the run
command OFF depending on data of the function code J65. To restart the inverter operation, turn the
run command OFF, and turns it ON again.
• This function does not work with 10% speed or less when driving PMSM.
<Mode selection J65=1, 2>
Stopper hit
Motor speed/output
frequency
Current/torque
Detection level
Timer
Decelerate to stop or coast
to a stop