YASKAWA L1000A Series, Техническое руководство

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6.3 Fault Detection
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
PF
PF
Input Phase Loss
Drive input power has an open phase or has a large imbalance o f voltage between phases. Detected when L8-05 = 1 (enabled).
C a u s e P o s s i b l e S o l u t i o n
There is phase loss in the drive input power.
• Check for wiring errors in the main circuit drive input power.
• Correct the wiring.
There is loose wiring in the drive input power terminals.
• Ensure the terminals are tightened properly.
• Apply the tightening torque as specified in this manual. R efer to W ire G auges a n d Tightening Torque on p a g e 56
There is excessive fluctuation in the drive input power
voltage.
• Check the voltage from the drive input power.
• R eview the possible solutions for stabilizing the drive input power.
There is poor balance between voltage phases. • Stabilize drive input power or disable phase loss detection.
The main circuit capacitors are worn.
• Check the maintenance time for the capacitors (U4-05).
• Replace the capacitor if U 4-05 is greater than 90%. For instructions on replacing the capacitor, contact Yaskawa or a Yaskawa
representative.
Check for problems with the drive input power. If drive input power appears normal but the alarm continues to occur, replace
either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a Yaskawa
representative.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
PF5 PF5
R escue Operation Power Supply Deterioration Error
C a u s e P o s s i b l e S o l u t i o n
During R escue Operation, either the DC bus voltage
dropped below S4-12
X
(S4-13 - 10%), or 100 m s after
triggering R escue Operation, the DC bus voltage did not
reach S4-12
X
S4-13 before the motor started.
• Check the DC bus voltage setting for R escue Operation (S4-12).
• Lower the speed reference set for R escue Operation (d1-25).
• Check the backup power supply. It may need to be replaced with another UPS if it has becom e worn and can no longer provide
enough power.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
PBo
PGo
Encoder D isconnected (for Control M ode with Encoder)
N o encoder pulses are received for longer than the tim e set to F1-14.PGoH
C a u s e P o s s i b l e S o l u t i o n
Encoder cable is disconnected. Reconnect the cable.
Encoder cable wiring is wrong. Correct the wiring.
Encoder has no power. Check the power line to the encoder.
Motor brake is not released. Ensure the motor brake releases properly.
During R escue Operation, either the DC bus voltage
dropped below S4-12
X
(S4-13 - 10%), or 100 m s after
triggering R escue Operation, the DC bus voltage did not
reach S4-12
X
S4-13 before the motor started.
• Check the DC bus voltage setting for R escue Operation (S4-12).
• Lower the speed reference set for R escue Operation (d1-25).
• Check the backup power supply. It may need to be replaced with another UPS if it has becom e worn and can no longer provide
enough power.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
PuoH
PGoH
Encoder D isconnected (detected when using an encoder)
Encoder cable is not connected properly.
C a u s e P o s s i b l e S o l u t i o n
Encoder cable is disconnected. Reconnect the cable.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
Г Г
rr
Dynam ic Braking Transistor Fault
The built-in dynamic braking transistor failed.
C a u s e P o s s i b l e S o l u t i o n
The braking transistor is damaged. • Cycle power to the drive and check if the fault reoccurs. R efer to D ia g n o sin g a n d R esettin g F au lts on p a g e 2 6 6 .
• Replace either the control board or the entire drive. For instructions on replacing the control board, contact Yaskawa or a
Yaskawa representative.
The control circuit is damaged.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
5 E
SC
IGBT Short Circuit
Short Circuit or Ground Fault is detected
C a u s e P o s s i b l e S o l u t i o n
IGBT fault. • Check the wiring to the motor.
• Turn the power supply o ff and then on again to check operation.
^ If the problem continues, contact your Yaskawa representative or nearest Yaskawa sales office.
IGBT short circuit detection circuit fault.
The drive is damaged.
Check the drive output side short circuit for broken output transistor..
B1 and U /V /W
- (negative) and U /V /W
^ Contact your Yaskawa representative or nearest Yaskawa sales office.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
S E l SE1
Motor Contactor Response Error
Motor contactor does not respond within the time set to S1-10 (Run Command D elay Time).
C a u s e P o s s i b l e S o l u t i o n
There is a problem with the motor contactor or auxiliary
switch.
Check the motor contactor, auxiliary switches and the wiring o f the contactor feedback signal.
D i g i t a l O p e r a t o r D i s p l a y F a u l t N a m e
5 EB SE2
Starting Current Error
The output current was lower than 25% o f the motor no-load current at start.
C a u s e P o s s i b l e S o l u t i o n
The motor contactor is open. Check the contactor for any problems.
250 YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual