Operation Example
Chapter 4-2
4-2 Operation Example
4-2-1 Power Connection
Checkpoints before Connecting the Power Supply
• Check that the power supply is on the correct voltage and that the motor output terminals (R/L1, S/L2, and T/L3) are connected to the motor correctly.
CIMR-J7AZ-2 _ : Three-phase 200 to 230 V AC
CIMR-J7AZ-B _ : Single-phase 200 to 240 V AC (Wire R/L1 and S/L2)
CIMR-J7AZ-4 _ : 3-phase 380 to 460 V AC
• Make sure that the motor output terminals (U/T1, V/T2, and W/T3) are connected to the motor correctly.
• Ensure that the control circuit terminals and the control device are wired correctly. Make sure that all control terminals are turned off.
• Set the motor to no-load status (i.e., not connected to the mechanical system).
Connecting the Power Supply
• After conducting the above checks, connect the power supply.
4-2-2 Check the Display Status
• If the display is normal when the power is connected, it will read as follows:
Normal
RUN indicator: Flashes
ALARM indicator: Off
Setting/Monitor indicators: FREF, FOUT, or IOUT is lit.
Data display: Displays the corresponding data for the indicator that is lit.
• When a fault has occurred, the details of the fault will be displayed. In that case, refer to Chapter 8 Maintenance Operations and take necessary action.
Fault
RUN indicator: Flashes
ALARM indicator: Lit (fault detection) or flashes (alarm detection)
Setting/Monitor indicators: FREF, FOUT, or IOUT is lit.
Data display: The fault code, such as UV1, is displayed. The display will differ depending on the type of fault.
45
Operation Example
Chapter 4-2
4-2-3 Initializing Parameters
• Initialize the parameters using the following procedure.
• To initialize the parameters, set n01 to 8.
Key sequence
Indicator Display example
Explanation
Power ON v
In approximately 1 s.
Press the Mode Key repeatedly until the PRGM indicator is lit.
Press the Enter Key. The data of n01 will be displayed.
Use the Increment or Decrement
Key to set n01 to 8. The display will flash.
Press the Enter Key so that the set value will be entered and the data display will be lit.
The parameter number will be displayed.
4-2-4 Setting the Rated Motor Current
• Set the motor current parameter in n32 in order to prevent the motor from burning due to overloading.
Setting the Rated Motor Current
• Check the rated current on the motor nameplate and set the motor current parameter.
• This parameter is used for the electronic thermal function for motor overload detection (OL1). By setting the correct parameter, the overloaded motor will be protected from burning.
n32
Setting range
Rated Motor Current
0.0% to 120% (A) of rated output current of the Inverter
Unit of setting
0.1 A
Changes during operation
Default setting
No
(see note 1)
Note 1.
The standard rated current of the maximum applicable motor is the default rated motor current.
2.
Motor overload detection (OL1) is disabled by setting the parameter to 0.0.
Key sequence
Indicator Display example
Explanation
Displays the parameter number.
In approximately 1 s.
Use the Increment or Decrement
Key until n32 is displayed.
Press the Enter Key. The data of n32 will be displayed.
Use the Increment or Decrement
Key to set the rated motor current.
The display will flash.
Press the Enter Key so that the set value will be entered and the data display will be lit.
The parameter number will be displayed.
46
Operation Example
Chapter 4-2
4-2-5 No-load Operation
• Start the no-load motor (i.e., not connected to the mechanical system) using the Digital Operator.
Note Before operating the Digital Operator, check that the FREQ adjuster is set to
MIN.
Forward/Reverse Rotation with the Digital Operator
Key sequence
Indicator Display example
Explanation
Press the Mode Key to turn on the
FREF indicator.
Monitors the frequency reference.
Press the RUN Key. The RUN
Indicator will be lit.
Turn the FREQ adjuster clockwise slowly.
The monitored frequency reference will be displayed.
The motor will start rotating in the forward direction according to the frequency reference.
Press the MODE Key to turn on the F/R indicator. “For” will be displayed.
Use the Increment or Decrement
Key to change the direction of motor rotation. The direction of motor rotation selected will be enabled when the display is changed after the Key is pressed.
• After changing the frequency reference or the rotation direction, check that there is no vibration or abnormal sound from the motor.
• Check that no faults have occurred in the Inverter during operation.
Stopping the Motor
On completion of operating the motor in the no-load state in the forward or reverse direction, press the STOP/RESET Key. The motor will stop.
47
Operation Example
Chapter 4-2
4-2-6 Actual Load Operation
• After checking the operation with the motor in no-load status, connect the mechanical system and operate with an actual load.
Note Before operating the Digital Operator, check that the FREQ adjuster is set to
MIN.
Connecting the System
• After confirming that the motor has stopped completely, connect the mechanical system.
• Be sure to tighten all the screws when fixing the motor axis in the mechanical system.
Operation Using the Digital Operator
• In case a fault occurs during operation, make sure the Stop Key on the
Digital Operator is easily accessible.
• Use the Digital Operator in the same way as no-load operation.
• First set the frequency reference to a low speed of one tenth the normal operating speed.
Checking the Operating Status
• Having checked that the operating direction is correct and that the machine is operating smoothly at slow speed, increase the frequency reference.
• After changing the frequency reference or the rotation direction, check that there is no vibration or abnormal sound from the motor. Check the monitor display (IOUT or multi-function monitor U03) to ensure that the output current is not becoming excessive.
48
