YASKAWA CIPR-GA50UВ001AJ Series Installation & Primary Operation page 134

15 Troubleshooting
Code Name
Overtorque Detection
oL4
2
Mechanical
oL5
Weakening Detection
1
High Slip Braking
oL7
Overload
Keypad Connection
oPr
Fault
oS Overspeed
134
Causes
A fault occurred on the
machine.
Example: The machine is
locked.
The parameters are incorrect for
the load.
The drive detected overtorque
as specified by the conditions
for mechanical weakening
detection set in L6-08
[Mechanical Fatigue Detect
Select].
The load inertia is too large.
An external force on the load
side rotated the motor.
Something is preventing
deceleration on the load side.
The value set in n3-04 [HSB
Overload Time] is too small.
The keypad is not securely
connected to the connector on
the drive.
The connection cable between
the drive and the keypad is
disconnected.
There is overshoot.
There is an incorrect number of
PG pulses set in the drive.
The oS detection level is set
incorrectly.
YASKAWA TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
Possible Solutions
Examine the machine and remove the
cause of the fault.
Adjust L6-05 [Torque Detection Level 2]
and L6-06 [Torque Detection Time 2]
settings.
Do a deterioration diagnostic test on the
machine side.
• Decrease deceleration times in C1-02,
C1-04, C1-06, and C1-08
[Deceleration Times] for applications
that do not use High Slip Braking.
• Use a braking resistor to decrease the
deceleration time.
• Increase the value set in n3-04.
• Connect a thermal overload relay to
the motor, and set n3-04 = 1200 s
(maximum value).
Examine the connection between the
keypad and the drive.
• Remove the keypad and then
reconnect it.
• Replace the cable if damaged.
• Decrease C5-01 [ASR Proportional
Gain 1] and increase C5-02 [ASR
Integral Time 1].
• Use H6-02 to H6-05 [Pulse Train
Input Setting Parameters]to adjust the
pulse train gain.
Set H6-02 [Terminal RP Frequency
Scaling] to the pulse train frequency
during 100% reference (maximum motor
rotation speed).
Adjust F1-08 [Overspeed Detection
Level] and F1-09 [Overspeed Detection
Delay Time].