Fault Detection; Fault Detection; Fault Displays, Causes, And Possible Solutions - YASKAWA FSDrive-MV1000 Instructions Manual

5.4 Fault Detection

5.4

Fault Detection

◆ Fault Displays, Causes, and Possible Solutions

Table 5.12 Detailed Fault Displays, Causes, and Possible Solutions
Digital Operator Display
bUS
Cause
No signal received from the PLC.
Faulty communications wiring or a short
circuit exists.
A communications data error occurred due to
noise.
The option card is damaged.
The option card is not properly connected to
the drive.
Digital Operator Display
CE
Cause
Faulty communications wiring or a short
circuit exists.
Communication data error occurred due to
noise.
Digital Operator Display
CF
Cause
Motor parameters are not set properly.
Torque limit is set too low.
Load inertia is too big.
The connection between motor and drive is
improper.
The line-to-line resistance has not been tuned. Run the Auto-Tuning of line-to-line resistance.
The stopping method setting is not
appropriate.
The Run command is issued in the coast to
stop state.
118
Option Communication Error
• After establishing initial communication, the connection was lost.
• Only detected when the run command or frequency reference is assigned to an option
card.
Check for faulty wiring.
⇒Correct the wiring.
⇒Check for disconnected cables and short circuits. Repair as needed.
Check the various options available to minimize the effects of noise.
⇒Take steps to counteract noise in the control circuit, main circuit, and ground wiring.
⇒If the magnetic contactor is identified as a source of noise, install a surge protector to the
MC coil.
⇒Use only recommended shielded line. Ground the shield on the controller side or on the
drive input power side.
⇒Separate all wiring for comm. devices from drive input power lines. Install an EMC
noise filter to the drive input power supply.
⇒Replace the option card if there are no problems with the wiring and the error continues
to occur.
The connector pins on the option card are not properly lined up with the connector pins on
the drive.
⇒Reinstall the option card.
MEMOBUS/Modbus Communication Error
Control data was not received for the CE detection time set to H5-09.
Check for faulty wiring.
⇒Correct the wiring.
⇒Check for disconnected cables and short circuits. Repair as needed.
Check the various options available to minimize the effects of noise.
⇒Take steps to counteract noise in the control circuit, main circuit, and ground wiring.
⇒If the magnetic contactor is identified as a source of noise, install a surge protector to the
MC coil.
⇒Use only recommended shielded line. Ground the shield on the controller side or on the
drive input power side.
⇒Separate all wiring for comm. devices from input power lines of the drive. Install an
EMC noise filter to the drive input power supply.
Control Fault
A torque limit was reached continuously for three seconds or longer while ramping to stop
in Open Loop Vector Control.
⇒Check the motor parameter settings and repeat Auto-Tuning.
⇒Set the torque limit to an appropriate value using parameters L7-01 to L7-04.
⇒Adjust the deceleration time (C1-02, -04, -06, -08).
⇒Set the frequency to the minimum value and interrupt the Run command when the drive
finishes decelerating.
Check for faulty wiring.
⇒Correct the wiring.
The Run command fails to decelerate to a stop or is applied to unwanted machine.
⇒The stop command is issued after the motor stopped.
⇒Enable Speed Search at start (b3-01 = 1).
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions