YASKAWA V1000 Series Installation & Start-Up Manual

5.5 Fault Detection
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07) 217
Troubleshooting
5
LED Operator Display Fault Name
oL4
Overtorque Detection 2
The current has exceeded the value set for Overtorque Detection 2 (L6-05) for
longer than the allowable time (L6-06).
Cause Possible Solution
Parameter settings are not
appropriate for the type of load.
Check the settings of parameters L6-05 and L6-06.
There is a fault on the machine side
(e.g., the machine is locked up).
Check the status of the load.
Remove the cause of the fault.
LED Operator Display Fault Name
oL7
High-slip Braking OL
The output frequency stayed constant for longer than the time set in n3-04
during High-slip Braking.
Cause Possible Solution
Excessive load inertia.
• Reduce deceleration times using parameters C1-02, -04, -06 and -08 in
applications that do not use High-slip Braking.
• Use a braking resistor to shorten deceleration time.
Motor is driven by the load.
Something on the load side is
restricting deceleration.
The overload time during High-slip
Braking during is too short.
• Increase parameter n3-04 (High-slip Braking Overload Time).
• Install a thermal relay and increase the parameter setting of n3-04 to the
maximum value.
LED Operator Display Fault Name
oPr
Digital Operator Connection Fault
• The LED operator has been disconnected from the drive.
Note: An oPr fault will occur when all of the following conditions are true:
• The drive is set so that output is interrupted when the operator is disconnected
(o2-06 = 1).
• The run command is assigned to the LED operator
(b1-02 = 0 and LOCAL has been selected).
Cause Possible Solution
LED operator is not connected to the
drive.
• Check the connection between the LED operator and the drive.
• Replace the cable if damaged.
• Turn off the drive input power and disconnect the LED operator. Next
reconnect the operator and turn the drive input power back on.
LED Operator Display Fault Name
oS
Overspeed (Simple V/f with PG)
Pulse input (RP) indicate that the motor speed feedback exceeded the setting in
F1-08 for longer than the time set to F1-09.

YASKAWA V1000 Series Specifications

General

Model	V1000 Series
Series	V1000
Output Frequency	0.1 to 400 Hz
Overload Capacity	150% for 60 seconds
Type	AC Drive
Control Method	V/f Control
Input Voltage	200-240V, 380-480V
Output Voltage	0 to Input Voltage
Power Range	0.1 to 18.5 kW
Horsepower	0.2 to 25 HP
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit, Ground Fault
Communication Interfaces	Modbus RTU
Enclosure	IP20
Ambient Temperature	-10 to +50°C
Storage Temperature	-20 to +60°C
Humidity	5 to 95% RH (non-condensing)
Cooling Method	Fan Cooled