Mitsubishi FR-E 500 User Manual

5.2 Troubleshooting
PROTECTIVE FUNCTIONS
175
5.2 Troubleshooting
POINT: Check the corresponding areas. If the cause is still unknown, it is
recommended to initialize the parameters (return to factory settings), re-set
the required parameter values, and check again.
5.2.1 Motor remains stopped
1) Check the main circuit
Check that a proper power supply voltage is applied (control panel display
is provided).
Check that the motor is connected
p
ro
p
erl
y
.
Check that the conductor across P1-P
(
+
)
is connected.
2) Check the input signals
Check that the start signal is input.
Check that both the forward and reverse rotation start signals are not
input.
Check that the frequency setting signal is not zero.
Check that the AU signal is on when the frequency setting signal is 4 to
20mA.
Check that the out
p
ut sto
p
si
g
nal
(
MRS
)
or reset si
g
nal
(
RES
)
is not on.
Check that the sink/source connector is fitted securel
y
(
400V class onl
y)
.
3) Check the parameter settings
Check that the reverse rotation
p
revention
(
Pr. 78
)
is not selected.
Check that the o
p
eration mode
(
Pr. 79
)
settin
g
is correct.
Check that the bias and gain (Pr. 902 to Pr. 905) settings are correct.
Check that the starting frequency (Pr. 13) setting is not greater than the
running frequency.
Check that various operational functions (such as three-speed operation),
especially the maximum frequency (Pr. 1), are not zero.
Check that the manufacturer settin
g
p
arameter Pr. 146 = 1.
4) Check the load
Check that the load is not too heavy.
Check that the shaft is not locked.
5) Others
Check that the ALARM lam
p
is off.
Check that the control
p
anel dis
p
la
y
does not show an error
(
e.
g
. E.OC1
)
.
Check that the Pr. 15 "jog frequency" setting is not lower than the Pr. 13
"starting frequency" value.
5.2.2 Motor rotates in opposite direction
Check that the
p
hase se
q
uence of out
p
ut terminals U, V and W is correct.
Check that the start signals (forward rotation, reverse rotation) are connected
properly.
5

Mitsubishi FR-E 500 Specifications

General

Brand	Mitsubishi
Model	FR-E 500
Category	Inverter
Language	English