Omron M1 Series User Manual page 769

Symptom
The RUN com-
mand is input,
but the motor
does not rotate.
M1 Series Standard Type User's Manual (I669)
Possible cause
No multifunction input terminal is
allocated for the RUN command.
Multi-step speed settings "0: CF1"
to "03: CF4" are set to the multi-
function input terminal, and these
are ON.
Both the forward and reverse in-
put terminals are ON.
The Reverse Rotation Prevention
Function (H08) is set to limit the
forward or reverse rotation.
The input terminal wiring or short-
circuit bar connection for the RUN
command is incorrect.
The analog input or variable resis-
tor wiring for the frequency refer-
ence is incorrect.
Although the inverter is operated
via the digital operator, the multi-
function input terminal is set to
"162: F-TM (Forced terminal
block)" and that terminal is ON.
Although the inverter is operated
via the control circuit terminal
block, the multifunction input ter-
minal is set to "35 OPE (Forced
operator function)" and that termi-
nal is ON.
An inverter trip occurred. (The
ERR LED lights and the alarm
code is displayed)
Remedy
To input the RUN command via a multifunction
input terminal, set the used terminal to "98:
FW (forward rotation)" or "99: RV (reverse ro-
tation)." To input the RUN command via the 3-
wire input function, set them to "98: FW," "6:
STP" and "97: F/R."
Disable the multi-step speed setting. (When
this setting is enabled, multi-step speed opera-
tion is performed, so the motor does not rotate
if the frequency values in the Multi-step Fre-
quency Reference 1 to 15 (C05 to C19) are 0
(default).)
To input the RUN command via the forward/
reverse input terminal, turn ON either of them.
Set Reverse Rotation Prevention Function
(H08) correctly.
Wire correctly. (The multi-function input termi-
nal status can be checked in the Input Termi-
nal Monitor (W40)/Output Signal Monitor
(W41).)
Wire correctly.
•
For the analog voltage or variable resistor
input, measure the voltage between the ter-
minals AI1 to AIC or AI2 to AIC with a tester
etc. to check that the voltage is correct.
•
For the analog current input, with the wires
disconnected, measure the current flowing
between the power supply and AII terminals
with a tester etc. to check that the current is
correct.
Turn OFF the terminal to which the function is
allocated.
Turn OFF the terminal to which the function is
allocated.
Press the key to reset the trip and, after
determining the cause and taking counter-
measures based on the alarm code, restart
the inverter.
9 Troubleshooting
Refer-
ence
page
page
5-55
page
5-56
page
5-57
page
5-55
page
7-117
page
2-10
page
2-12
page
2-51
page
2-10
page
7-35
page
7-75
page
7-75
page
5-49
page
9-2
9-29
9