YASKAWA varispeed G7 CIMR-G7B series Instruction Manual page 398

Display
Undertorque Detected 1
UL3
There has been a current less than the
欠转矩
setting in L6-02 for longer than the
检出 1
setting in L6-03.
Undertorque Detected 2
UL4
There has been a current less than the
欠转矩
setting in L6-05 for longer than the
检出 2
setting in L6-06.
Overspeed
The speed has been greater than the
OS
setting in F1-08 for longer than the
电机过速
setting in F1-09.
PG Disconnection Detected
PGO
PG pulses were input when the
PG 回路
Inverter was outputting a frequency.
故障
Excessive Speed Deviation
DEV
The speed deviation has been greater
电机速度
than the setting in F1-10 for longer
偏差过大
than the setting in F1-11.
Control Fault
The torque limit was reached continu-
ously for 3 seconds or longer during a
deceleration stop during open-loop
CF
vector 1 control.
控制故障
An error occurred in the speed estima-
tion calculation for open-loop vector 2
control.
PID Feedback Reference Lost
A PID feedback reference loss was
detected (b5-12 = 2) and the PID feed-
FBL
back input was less than b5-13 (PID
反馈丧失
feedback loss detection level) for
longer than the time set in b5-14 (PID
feedback loss detection time).
-8
7
Table 7.1 Fault Displays and Processing (Continued)
Meaning
Overshooting/Undershooting are
occurring.
The reference speed is too high.
The settings in F1-08 and F1-09 aren't
appropriate.
There is a break in the PG wiring.
The PG is wired incorrectly.
Power isn't being supplied to the PG.
Brake is applied to the motor.
The load is too heavy.
The acceleration time and deceleration
time are too short.
The load is locked.
The settings in F1-10 and F1-11 aren't
appropriate.
Brake is applied to the motor.
Motor constant settings are not cor-
rect.
Refer to Corrective Actions for Control Faults (CF) on page 7-14.
The settings in b5-13 and b5-14 aren't
appropriate.
The wiring of the PID feedback circuit
is incorrect.
Probable Causes
• Make sure that the settings in
-
• Check the mechanical system
• Make sure that the current set-
-
• Check the mechanical system
Adjust the gain again.
Check the reference circuit and
reference gain.
Check the settings in F1-08 and
F1-09.
Fix the broken/disconnected wir-
ing.
Fix the wiring.
Supply power to the PG properly.
Check for open circuit when using
brake (motor).
Reduce the load.
Lengthen the acceleration time
and deceleration time.
Check the mechanical system.
Check the settings in F1-10 and
F1-11.
Check for open circuit when using
brake (motor).
• Check the motor constants.
• Perform autotuning.
Check the settings in b5-13 and
b5-14.
Fix the wiring.
Corrective Actions
L6-02 and L6-03 are appropri-
ate.
and correct the cause of the
overtorque.
ting in L6-05 and time setting in
L6-06 are appropriate.
and correct the cause of the
overtorque.