YASKAWA V1000 Series Installation & Start-Up Manual

5.5 Fault Detection
214 YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Cause Possible Solution
Surrounding temperature is too hot.
• Check the temperature surrounding the drive.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool the surrounding area.
• Remove anything near the drive that might be producing excessive heat.
Load is too heavy.
• Measure the output current.
• Reduce the load.
• Lower the carrier frequency (C6-02).
The internal cooling fan has reached
its performance life or has
malfunctioned.
• Check the maintenance time for the cooling fan (U4-04).
• If U4-04 exceeds 90%, replace the cooling fan. Refer to Cooling Fan
Replacement on page 278.
• When the fan has been replaced, reset the fan maintenance time
(o4-03 = “0”).
Airflow is restricted to the cooling
fan.
• Provide the proper installation space around the drive as indicated in the
manual. Refer to Correct Installation Spacing on page 40.
• Allow for the specified space and ensure there is sufficient circulation around
the control panel.
• Check for dust or foreign materials that may have clogged the cooling fan.
• Clear out debris caught in the fan that inhibits air circulation.
LED Operator Display Fault Name
oH3
Motor Overheat Alarm (PTC Input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the
alarm detection level.
• Detection requires multi-function analog input H3-02 or H3-10 be set to “E”.
Cause Possible Solution
Motor has overheated.
• Check the size of the load, the accel/decel times and the cycle times.
• Decrease the load.
• Increase the acceleration and deceleration times (C1-01 through C1-08).
Motor has overheated.
• Adjust the preset V/f pattern (E1-04 through E1-10). This will mainly involve
reducing E1-08 and E1-10.
• Be careful not to lower E1-08 and E1-10 excessively, as this reduces load
tolerance at low speeds.
Motor has overheated.
• Check the motor-rated current.
• Enter the motor-rated current as indicated on the motor nameplate (E2-01).
• Ensure the motor cooling system is operating normally.
• Repair or replace the motor cooling system.
LED Operator Display Fault Name
oH4
Motor Overheat Fault (PTC Input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the
alarm detection level.
• Detection requires that multi-function analog input H3-02 or
H3-10 be set to “E”.

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