Q2 Q2A, Техническое руководство

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T
roubleshooting
7
7.10 Troubleshooting Without Fault Display
SIEPYEUOQ2A01G AC Drive Q2A Technical Manual 309
Causes Possible Solutions
The MFAI setting is incorrect. • Make sure that the functions set to the MFAI are correct. The frequency reference is 0 when
H3-02, H3-10, H3-06 = 5 [AI1 Function Selection, AI2 Function Selection, AI3 Function
Selection = Freq Gain]
and voltage (current) is not input.
• View U1-13 [Terminal AI1 Input Lv], U1-14 [Terminal AI2 Input Lv], U1-15 [Terminal AI3
Input Lv] to see if the analog input values set to terminals AI1, AI2, and AI3 are applicable.
was pushed.
Turn the Run command OFF then ON from an external input.
Note:
When you push during operation, the drive will ramp to stop. Set o2-02 = 0 [STOP
Key Selection of Function = Disabled] to disable the function.
The 2-wire sequence and 3-wire sequence are set incorrectly.
•
Set one of the parameters H1-03 to H1-08 [DI3 Function Selection to DI8 Function Selection[
to 5 [3-Wire Seq.] to enable the 3-wire sequence.
• If a 2-wire sequence is necessary, make sure that H1-03 to H1-08 ≠ 5 .
◆
The Motor Rotates in the Opposite Direction from the Run Command
Causes Possible Solutions
The phase wiring between the drive and motor is incorrect.
•
Examine the wiring between the drive and motor.
•
Connect drive output terminals U/T1, V/T2, and W/T3 in the correct sequence to agree with
motor terminals U, V, and W.
• Switch two motor cables U, V, and W to reverse motor direction.
The forward direction for the motor is set incorrectly.
•
Connect drive output terminals U/T1, V/T2, and W/T3 in the correct sequence to agree with
motor terminals U, V, and W.
• Switch two motor cables U, V, and W to reverse motor direction.
A - Forward Rotation
Direction
B - Load Shaft
Figure 7.1 Forward Rotating Motor
Note:
Refer to the motor specifications, and make sure that the forward rotation direction is correct
for the application. The forward rotation direction of motors can be different for different
motor manufacturers and types.
The signal connections for forward run and reverse run on the drive control
circuit terminals and control panel side are incorrect. Correctly wire the control circuit.
The motor is running at almost 0 Hz and the Speed Search estimated the
speed to be in the opposite direction. Set b3-14 = 0 [Speed Bi-Directional Search = Disabled] , then the drive will only do speed search
in the specified direction.
◆
The Motor Rotates in Only One Direction
Causes Possible Solutions
The drive will not let the motor rotate in reverse. Set b1-04 = 0 [Reverse Operation Selection = Enabled] .
The drive did not receive a Reverse run signal and 3-Wire sequence is
selected. Turn ON the terminals to which H1-xx = 5 [3-Wire Seq.] is set, and then enable reverse
operation.
◆
The Motor Is Too Hot
Causes Possible Solutions
The load is too heavy.
•
Decrease the load.
• Increase the acceleration and deceleration times.
•
Examine the values set in L1-01 [Motor Cool Type for OL1 Calc] , L1-02 [OL1 Protect Time] ,
and E2-01 [Mot Rated Current (FLA)] .
• Use a larger motor.
Note:
The motor also has a short-term overload rating. Examine this rating carefully before setting
drive parameters.
The motor is running continuously at a very low speed.
•
Change the run speed.
•
Use a drive-dedicated motor.
The drive is operating in a vector control mode, but Auto-Tuning has not
been done. • Do Auto-Tuning.
• Calculate motor parameter and set motor parameters.
• Set A1-02 = 0 [Control Method = V/f Control] .
B
A