Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 144)

4.7 Setup Troubleshooting and Possible Solutions
144 YASKAWA ELECTRIC SIEP YAIL1E 01A YASKAWA AC Drive L1000E Technical Manual
■ Motor Rotates in the Opposite Direction from the Up/Down Command
◆ Motor is Too Hot
◆ Drive Does Not Allow Selection the Desired Auto-Tuning Mode
◆ Electrical Noise From Drive or Output Lines When the Drive is Operating
◆ Ground Fault Circuit Interrupter (ELCB/GFCI) Trips During Run
Selection for the sink/source mode and the internal/external power
supply is incorrect.
Check the position of the jumper and setting for S3. Refer to Control I/O Configuration on page 79
Speed reference is too low.
• Check the speed reference monitor (U1-01).
• Increase the speed reference above the minimum output speed (E1-09).
• Make sure speed references are set properly and the speed selection works properly. If using an analog signal make
sure the input signal is present at the time the Up/Down command is issued.
The brake does not release or motor contactor is not closed. Check the brake and motor contactor sequence.
The button is enabled (o2-02=1) and was pressed
when the drive was started from a REMOTE source.
• When the button is pressed, the drive will decelerate to stop.
• Switch off the Up/Down command and then re-enter a new Up/Down command.
• o2-02 is set to 0 by default, i.e. the Stop button is disabled.
Cause Possible Solutions
Phase wiring between the drive and motor is incorrect.
Check the motor wiring. Perform the steps described in Motor Rotation Direction Setup on page 104 and PG Encoder
Setup on page 104 .
Drive control circuit terminals for the Up and Down commands are
switched. • Check the control circuit wiring.
• Correct any fault wiring.
Cause Possible Solutions
The load is too heavy.
If the load is too heavy for the motor, the motor will overheat as it exceeds its rated torque value for an extended period
of time.
Keep in mind that the motor also has a short-term overload rating in addition to the possible solutions provided below:
• Reduce the load.
• Lower the acceleration and deceleration ramps. (Increase the acceleration time and deceleration time)
• Check the values set for the motor protection (L1-01, L1-02) as well as the motor rated current (E2-01).
• Increase motor capacity.
The air around the motor is too hot.
• Check the ambient temperature.
• Cool the area until it is within the specified temperature range.
The drive is operating in a vector control mode but Auto-Tuning
has not yet been performed.
• Perform Auto-Tuning.
• Calculate the motor value and reset the motor parameters.
Refer to E2: Motor Parameters on page 179 .
• Change the motor control method to V/f Control (A1-02 = 0).
Insufficient voltage insulation between motor phases.
When the motor cable is long, high voltage surges occur between the motor coils and drive switching.
Normally, surges can reach up to three times the drive input power supply voltage.
• Use a motor with a voltage tolerance higher than the max voltage surge.
• Install an AC reactor on the output side of the drive. Make sure the output reactor can handle frequencies in the
range of the drive carrier frequency.
The motor fan has stopped or is clogged. Check the motor fan.
Cause Possible Solutions
The desired Auto-Tuning mode is not available for the selected
control mode. • Check if the desired tuning mode is available for the selected control mode. Refer to Auto-Tuning on page 109 .
• Change the motor control method by setting A1-02.
Cause Possible Solutions
PWM switching in the drive generates excessive noise.
• Lower the carrier frequency (C6-03).
• Install a noise filter on the input side of drive input power.
• Install a noise filter on the output side of the drive.
• Place the wiring inside a metal conduit to shield it from switching noise.
• Ground the drive and motor properly.
• Separate the main circuit wiring and the control lines.
• Make sure wires and the motor have been properly grounded.
Cause Possible Solutions
Excessive leakage current trips ELCB/GFCI ground fault circuit
interrupter.
• Increase the ELCB/GFCI sensitivity or use ELCB/GFCI with a higher threshold.
• Lower the carrier frequency (C6-03).
• Reduce the length of the cable used between the drive and the motor.
• Install a noise filter or reactor on the output side of the drive.
Cause Possible Solutions
STOP
STOP