Omron SYSDRIVE MX2 SERIES User Manual page 378

7-2 Troubleshooting
The motor rotation
speed does not
rise.
7
The frequency
cannot be set in
Output Frequency
Setting (F001)
using the Digital
Operator.
Specified
parameters are not
displayed.
The Digital
Operator keys do
not work.
7-11
Condition Possible cause
Contact failure of the
analog input for frequency
reference or Variable
Resistor.
The overload limit or
overcurrent suppression
function has actuated.
The setting of Maximum
Frequency (A004) or
Frequency Upper Limit
(A061/A261) is low.
Acceleration time is long.
"06: JG (jogging)" is
allocated to a multi-function
input terminal and the
terminal is turned ON.
One of multi-step speed
settings "02: CF1" to "05:
CF4" is allocated to a
multi-function input
terminal and the terminal
is turned ON.
The load is excessive.
The motor is locked.
Frequency Reference
Selection (A001) is not set
to "Digital Operator".
"51: F-TM (forced terminal
block)" is allocated to a
multi-function input
terminal and the terminal
is turned ON.
Display Selection (b037)
is set to "01: Individual
display of functions," "04:
Basic display," etc.
"86: DISP (Display fixed)"
is allocated to a multi-
function input terminal and
the terminal is turned ON.
"86: DISP (Display fixed)"
is allocated to a multi-
function input terminal and
the terminal is turned ON.
Remedial actions
Check the wiring.
• For the analog voltage or Variable
Resistor input, measure the FV-SC
terminal voltage using a tester, etc. to
check if the correct voltage is output.
• For the analog current input, disconnect
the wiring and measure the source-FI
terminal current using a tester, etc. to
check if the correct current is supplied.
Disable the function or raise the operation
level.
Change the setting.
Shorten the acceleration time (F002/F202/
A092/A292).
Turn OFF the terminal to which the
applicable function is allocated.
Turn OFF the multi-step speed setting. (If
the multi-step speed setting terminal is
turned ON, multi-step speed operation
becomes effective. Accordingly, operation
is performed according to the frequency
set in Multi-step Speed Reference 1 to 15
(A021 to A035)).
Reduce the load.
Unlock the motor.
Set Frequency Reference Selection
(A001) to "02: Digital Operator".
Turn OFF the terminal to which the
applicable function is allocated.
Set Display Selection (b037) to "00:
Complete display".
Turn OFF the terminal to which the
applicable function is allocated.
Turn OFF the terminal to which the
applicable function is allocated.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Reference
Page
2-6
5-37
5-114
5-28
5-60
5-24
5-59
5-64
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−
5-15
5-85
5-88
5-91
5-91