Yaskawa AC Drive P1000 Bypass Technical Manual User Manual
Page 179
Fault detected in the internal cooling fan or
magnetic contactor to the power supply
• Cycle power to the drive.
• If the fault continues to occur, replace the power board/gate drive board or the entire drive.
• Contact Yaskawa or a Yaskawa representative for instructions on replacing the power board/gate
drive board.
HOA Keypad Display
Fault Name
FB01
Safety Open
Note:
A fault reset is not required. Bypass contactor K3 is opened.
Cause
Possible Solution
The digital input set to Safety open is open
• Install a NC safety circuit between DI-o and IG-24 on PCB A2
• Install a jumper between DI-2 and IG-24 on PCB A2. Use this method if a safety circuit will be
added in the future or is no safety circuit will be used at all.
HOA Keypad Display
Fault Name
FB02
BAS Interlock Open Time Out
Note:
A fault reset is required. An EF0 is sent to the drive and bypass contactor K3 is not
affected.
BAS/Damper Interlock Open, Interlock Wait Timer Expired
Cause
Possible Solution
The digital input set to BAS Interlock is open
• Install a NC BAS Interlock Circuit/Damper Interlock between DI-o and IG-24 on PCB A2
• Install a jumper between DI-2 and IG-24 on PCB A2. Use this method if a safety circuit will be
added in the future or is no safety circuit will be used at all.
• Verify that the input assigned for the BAS Interlock is active within the timeout period set in Z1-15.
HOA Keypad Display
Fault Name
FB03
External Fault Bypass (EFB)
Note:
A fault reset is required. An EF0 is sent to the drive and drive output contactor K2 and
Bypass contactor K3 are opened.
External fault to bypass set
Cause
Possible Solution
An external fault (EFB) digital input became
active.
Remove the cause of the external fault.
An external fault (EFB) was received from the
serial communications network.
• Remove the cause of the external fault
• Remove the external fault input from the controller.
• Verify that the controller program is correct.
HOA Keypad Display
Fault Name
FB05
Motor Overload
Note:
A fault reset is required. An EF0 is sent to the drive and Bypass contactor K3 is opened.
Motor Overload detected
Cause
Possible Solution
Load is too heavy
Reduce the load.
Cycle times are too short during acceleration and
deceleration.
Increase the acceleration and deceleration times (C1-01 and C1-02).
A general-purpose motor is driven below the rated
speed with a high load
• Reduce the load.
• Increase the speed.
• If the motor is supposed to operate at low speeds, either increase the motor capacity or use a motor
specifically designed to operate in the desired speed range.
The wrong motor rated current is set to E2-01
• Check the motor-rated current.
• Enter the motor rated current to parameter E2-01 as indicated on the motor nameplate.
The maximum output frequency is set incorrectly Check the E1-03 setting.
Multiple motors are running off the same bypass Set L1-01 to 0 to disable the motor protection function and then install a thermal relay to each motor.
The electrical thermal protection characteristics
and motor overload characteristics do not match.
• Check the motor characteristics.
• Correct the type of motor protection that has been selected (L1-01).
• Install an external thermal relay.
The electrical thermal relay is operating at the
wrong level.
• Check the current rating listed on the motor nameplate.
• Check the value set for the motor rated current (E2-01)
6.4 Fault Detection
YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual
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Diagnostics & Troubleshooting