CIMR-P7U4090 Yaskawa 

 

P7U4090 Omron

 

150 HP, Serial P7

The P7 was designed for variable torque applications like Fans and Centrifugal Pumps. It was supplied with V/f control and Normal Duty overload rating of 110% for one minute.

 

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Error codes

 

 

 

 

OV

 

Description: DC Bus Overvoltage

                   208-240Vac: Trip point is ≥400 Vdc

                   480Vac : Trip point ≥ 800 Vdc

Cause1 : High input voltage at R/L1, S/L2, and T/L3.

Possible solution1 : Check the input circuit and reduce the input power to within specifications.

Cause2 : The deceleration time is set too short.

Possible solution2 : Extend the time in C1-02

Cause3 : Power factor correction capacitors are being used on the input to the Drive.

Possible solution3 : Remove the power factor correction capacitors.

 

PF

 

Description : Input Phase Loss

                    Drive input power supply has an open phase or has a large imbalance of input voltage.

Cause1 : Open phase on the input of the Drive

Possible solution1 : Check the input voltage.

Cause2 : Loose terminal screws at R/L1, S/L2 or T/L3.

Possible solution2 : Tighten te terminal screws.

Cause3 : Momentary power loss occured

Possible solution3 : Check the input voltage.

Cause4 : Input voltage fluctuation too large.

Possible solution4 : Check the input voltage :

Cause5 : Parameter L8-06 value is set incorrectly.

Possible solution5 : Adjust L8-06 according to your application. The higher the value the less sensitive it becomes.

 

PUF

 

Description : DC Bus Fuse

                     Detects if the DC bus fuse has opened.

Cause : Cherted output transistor(s) or terminals.

Possible solution : Remove power from the Drive

                           Diconnect the motor

                           Perform the checks without power in Table 6.6

                           Replace the shorted component(s)

                            Replace the defective fuse

 

 

 OL1

 

Description : Motor Overload

                    Designed to protect the motor.

                    Fully adjustable from parameter E2-01

Cause1 : The load is too large. The cycle time is too short at the accel/decel time

Possible solution1 : Recheck the cycle time and the size of the load as well as the times set in C1-01 and C1-02

Cause2 : The voltage of the V/F pattern is high.

Possible solution2 : Review the V/F pattern parameters, E1-01 thru E1-13.

Cause3 : Motor rated current setting is improper.

Possible solution3 : Check the motor rated current value in E2-01

 

OL2

 

Description : Drive Overload

                    Designed to protect the Drive

Cause1 : The load is too large. The cycle time is too short at the accel/decel time.

Possible solution1 : Recheck the cycle time and the size of the load as well as the times set in C1-01 and C1-02

Cause2 : The voltage of the V/F pattern is high.

Possible solution2 : Review the V/F pattern parameters, E1-01 thru E1-13.

Cause3: The size of the Drive is small

Possible solution3: Change to a larger size drive.

 

RR

 

Description: Dynamic Braking Transistor

                   The dynamic braking transistor failed

Cause: Shorted dynamic braking transistor, high DC bus voltage, defective dynamic braking resistor.

Possible solution: Cycle power off and on to the Drive

                           Replace defective dynamic braking transistor or resistor

                           Monitor DC bus voltage

 

 

 

UV1

Description: DC Bus Undervoltage

                       The DC bus voltage is ≤ L2-05

            208-240 Vac : Trip point is ≤ 190Vdc

            480 Vac : Trip point is ≤ 380Vdc

Cause1 : Low input voltage at R/L1, S/L2 and T/L3.

Possible solution1 : Check the input circuit and increase the input power to within specifications.

Cause2 : The acceleration time is set too short.

Possible solution2 : Extend the time in C1-01

Cause3 : Voltage fluctuation of the input power is too large.

Possible solution3 : Check the input voltage.