Mitsubishi Electric fr-e700 series, Инструкция по эксплуатации

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Troubleshooting Check first when you have troubles
FR-E700 SC EC/ENE 7 - 29
7.6.12 Speed does not accelerate
7.6.13 Unable to write parameter setting
Check Points Possible Cause Countermeasures
Refer to
Page
Input signal
Start command and frequency command are
chattering. Check if the start command and the fre-
quency command are correct.
—
The wiring length used for analog frequency
command is too long, and it is causing a volt-
age (current) drop. Perform analog input bias/gain calibration. 6-183
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" and Pr. 2 "Minimum frequency". If
you want to run the motor at 120Hz or
higher, set Pr. 18 "High speed maximum fre-
quency".
6-52
Check the calibration parameter C2 to C7 set-
tings.
6-183
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 so that stall
prevention does not occur.
6-35
V/F pattern is improper when V/F control is
performed. (Pr. 3, Pr. 14, Pr. 19)
Set rated frequency of the motor to Pr. 3
"Base frequency". Use Pr. 19 "Base frequency
voltage" to set the base voltage (e.g. rated
motor voltage).
6-56
Change Pr. 14 "Load pattern selection"
according to the load characteristic.
6-58
Stall prevention 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.
—
Auto tuning is not performed under
Advanced magnetic flux vector control or
General-purpose magnetic flux vector con-
trol.
Perform offline auto tuning. 6-90
During PID control, output frequency is automatically controlled to make measured value =
set point.
6-293
Main circuit
Brake resistor is connected between terminal
P/+ and P1 or between terminal P1 and PR by
mistake.
Connect an optional brake transistor (MRS
type, FR-ABR) between terminal P/+ and PR.
3-39
Check Points Possible Cause Countermeasures
Refer to
Page
Input signal
Operation is being performed (signal STF or
STR is ON).
Stop the operation.
When Pr. 77 = "0" (initial value), write is ena-
bled only during a stop.
6-195
Parameter
setting
You are attempting to set the parameter in
the External operation mode.
Choose the PU operation mode.
Or, set Pr. 77 = "2" to enable parameter write
regardless of the operation mode.
6-195
Parameter is disabled by the Pr. 77 "Parame-
ter write selection" setting. Check Pr. 77 "Parameter write selection" set-
ting.
6-195
Key lock is activated by the Pr. 161 "Fre-
quency setting/key lock operation selection"
setting.
Check Pr. 161 "Frequency setting/key lock
operation selection" setting.
6-330
Operation mode and a writing device do not
correspond.
Check Pr. 79, Pr. 338, Pr. 339, Pr. 550, Pr. 551,
and select an operation mode suitable for
the purpose.
6-206,
6-220