Yaskawa J1000 Compact V/f Control Drive - Manual (Page 146)

Digital Operator Display Minor Fault Name
Phase loss in the drive input power. Check for wiring errors in the main circuit drive input power. Correct
the wiring.
YES
Loose wiring in the drive input
power terminals.
• Ensure the terminals have been properly tightened.
• Apply the tightening torque specified in this manual to fasten the
terminals. Refer to Wire Gauges and Tightening Torques on page
46 .
There is a problem with the drive
input power voltage.
• Check the voltage.
• Lower the voltage of the drive input power so that it is within the
limits listed in the specifications.
Drive internal circuitry is worn.
• Check the maintenance time for the capacitors (U4-05).
• Replace the drive if U4-05 exceeds 90%.
The drive input power transformer
is not large enough and voltage
drops when the power is switched
on.
• Check for a tripped alarm when the magnetic contactor, line
breaker and leakage breaker are turned on.
• Check the capacity of the drive input power transformer.
Air inside the drive is too hot. Check the temperature inside the drive.
The CHARGE indicator light is
broken or disconnected.
Replace the drive.
5.5 Alarm Detection
146 YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide