92
Table 7-7 "Error" Display Details and Remedies (Continued)
LED Display
Error name
rr
Internal damping transistor error
Operation of the damping transistor is erroneous.
Cause
Measure
The damping transistor is broken.
Turn on/off the power supply to check if an error occurs.
-If the error occurs in succession, replace the VFD.
Defective VFD control circuit
Improper wiring of the braking resistor or
braking resistor unit
Check that there is no erroneous connection in the wiring of the braking
resistor or braking resistor unit,.
-Ensure proper wiring.
VFD hardware error
Turn on/off the power supply to check operation.
-If the error occurs again, replace the VFD.
LED Display
Error name
Uv1
Main circuit low voltage
The following states occurred when no driving command is inputted
(when the
VFD is not operating).
-The main circuit DC voltage is below the setting value.
200V class:
Lifting: Approx. 200V, Traversing: Approximately 190V
400V class: Approx. 380V
Cause
Measure
Phase interruption of the input power
supply occurred.
Check the main circuit power supply wiring for a break or wrong wiring.
⇒
Perform wiring correctly.
The wiring terminal of the input power
supply is loose.
Check the terminal for looseness.
⇒
Re-tighten the terminal.
An error occurred in the power supply
voltage.
Check the voltage.
⇒
Adjust the voltage to the range of the power supply specification of
the VFD.
Power failure occurred.
⇒
Check the power supply.
The internal circuit of the VFD is
deteriorated.
⇒
Replace the VFD.
The power supply voltage drops
at an inrush current of the VFD due to
insufficient capacity
of the power supply transformer.
Check if an alarm occurs when the wiring breaker, earth leakage
breaker (with
overcurrent protection function), or electromagnetic contactor is ON.
⇒
Review the power supply transformer capacity.
VFD internal atmosphere error
⇒
Check the ambient temperature of the VFD.
CHARGE lamp failure (lamp break)
⇒
Replace the VFD.
LED Display
Error name
Uv2
Control power supply error
The control power supply voltage dropped.
Cause
Measure
VFD internal circuit
error
Turn on/off the power supply to check if an error occurs.
⇒
If the error occurs in succession, replace the inverter (VFD).
Summary of Contents for Harrington RY Series
Page 15: ...15 2 3 Part Names Figure 2 1 RY Part Names...
Page 42: ...42 Figure 3 20 Hoist Upper and Lower Limit Switch ULLS...
Page 57: ...57 Table 5 8 Various shapes that require the wire rope to be replaced...
Page 67: ...67 Table 6 9 Motor Brake Gap Capacity Code Brake Gap G inch mm RY030 RY050 0 032 0 8...
Page 104: ...104 9 3 Trolley Frame Parts Figure 9 3 Trolley Frame Parts...
Page 112: ...112 9 10 Hoist Motor Parts Figure 9 10 Hoist Motor Parts...
Page 114: ...114 9 11 Trolley Motor Parts Figure 9 11 Trolley Motor Parts...
Page 116: ...116 9 12 Control Panel Box Parts Figure 9 12 Control Panel Box Parts...
