Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

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Check first when you have troubles Troubleshooting
7 - 26
7.6.5 Motor rotates in opposite direction
7.6.6 Speed greatly differs from the setting
7.6.7 Acceleration/deceleration is not smooth
Check Points Possible Cause Countermeasures
Refer to
Page
Main circuit
Phase sequence of output terminals U, V and
W is incorrect.
Connect phase sequence of the output
cables (terminal U, V, W) to the motor cor-
rectly
3-7
Input signal
The start signals (forward rotation, reverse
rotation) are connected improperly.
Check the wiring. (STF: forward rotation, STR:
reverse rotation)
3-15
Adjustment by the output frequency is
improper during the reversible operation
with Pr. 73 "Analog input selection" setting.
Check the setting of Pr. 125, Pr. 126, C2 to C7. 6-87
Parameter
setting Pr. 40 "RUN key rotation direction selection"
setting is incorrect.
Check the Pr. 40 setting. 6-329
Check Points Possible Cause Countermeasures
Refer to
Page
Input signal
Frequency setting signal is incorrectly input. Measure the input signal level. —
The input signal lines are affected by external
EMI.
Take countermeasures against EMI such as
using shielded wires for input signal lines.
3-52
Parameter
setting
Pr. 1, Pr. 2, Pr. 18, calibration parameter C2 to
C7 settings are improper.
Check the settings of Pr. 1 "Maximum fre-
quency", Pr. 2 "Minimum frequency", Pr. 18
"High speed maximum frequency".
6-52
Check the calibration parameter C2 to C7 set-
tings.
6-183
Pr. 31 to Pr. 36 "Frequency jump" settings are
improper.
Narrow down the range of frequency jump. 6-54
Load
Stall prevention is activated due to a heavy
load.
Reduce the load weight. —
Parameter
setting
Set Pr. 22 "Stall prevention operation level
"higher according to the load. (Setting Pr. 22
too large may result in frequent overcurrent
trip (E.OC
첸
).)
6-44
Motor
Check the capacities of the inverter and the
motor.
—
Check Points Possible Cause Countermeasures
Refer to
Page
Parameter
setting
Acceleration/deceleration time is too short. Increase acceleration/deceleration time. 6-71
Torque boost (Pr. 0, Pr. 46) setting is improper
under V/F control, so the stall prevention
function is activated.
Increase/decrease Pr. 0 "Torque boost" set-
ting value by 0.5% increments to the setting.
6-35
The base frequency does not match the
motor characteristics.
For V/F control, set Pr. 3 "Base frequency" and
Pr. 47 "Second V/F (base frequency)".
6-56
For Advanced magnetic flux vector control or
General-purpose magnetic flux vector con-
trol, set Pr. 84 "Rated motor frequency".
6-90
Stall prevention function is activated due to a
heavy load.
Reduce the load weight. —
Set Pr. 22 "Stall prevention operation level
"higher according to the load. (Setting Pr. 22
too large may result in frequent overcurrent
trip (E.OC
첸
).)
6-44
Check the capacities of the inverter and the
motor.
—
Regeneration avoidance operation is per-
formed
If the frequency becomes unstable during
regeneration avoidance operation, decrease
the setting of Pr. 886 "Regeneration avoid-
ance voltage gain".
6-314