Omron MX2 Series User Manual page 568

10 Troubleshooting
Symptom
The CX-Drive can-
not be connected
with the inverter.
The inverter does
not accept parame-
ter settings from the
CX-Drive.
The brake control
function causes an
Overload protec-
tion alarm (E05).
The brake control
function causes a
Brake error (E36).
The brake control
function causes the
load to fall.
The PM motor
rotates during
startup.
The PM motor
causes an Overcur-
rent protection
alarm (E03) during
startup.
10 -
20
Possible cause
The CX-Drive version is not
supported.
The inverter software number
does not match.
The Modbus mapping endian
function setting is inappropri-
ate.
The inverter is in operation.
The Modbus mapping function
is enabled.
The inverter is in operation with
the brake force.
The output current does not
reach the set brake release
current value.
The brake confirmation signal
is not input.
The set brake release current is
insufficient.
The frequency setting for
releasing/forcing the brake is
too low.
The magnetic pole position of
the motor during startup is
incorrect.
The PM motor stalls.
The load too heavy.
Multi-function Compact Inverter 3G3MX2-EV2 User's Manual (I666-E1)
Remedy
To connect the CX-Drive to the 3G3MX2-EV2
Series, use Ver. 2.8 or higher.
Set the software number of the connected
inverter in the CX-Drive.
Set the Modbus Mapping Endian Selection
(P400) to 00 (Big endian).
Stop the inverter and, after the motor falls in a
deceleration-stop state, set the parameters
again. Setting b031 to 10 (Data can be
changed during RUN) enables parameter
settings to be changed even when the
inverter is in operation.
Set the Modbus Mapping Function Selection
(P200) to 00 (Standard Modbus address).
Turn OFF the RUN command to the inverter
when the brake is applied. Even under DC
injection braking, an Overload protection
alarm may occur.
Increase the Brake Release Wait Time (b121)
value or decrease the Brake Release Current
(b126).
• Correct the wiring for the brake confirmation
signal (44: BOK). Deallocate the brake con-
firmation function from the multi-function
input setting.
• Review the operation sequence so that the
brake confirmation signal (44: BOK) is input
after the brake is released.
• Replace the brake if it is faulty.
• Increase the Brake Release Current (b126)
value.
• Set the 1st/2nd Control Method
(A044/A244) to 03 (Sensorless vector con-
trol).
Increase the Brake Release Frequency
(b125), Brake Force Frequency (b127), or
Creep Speed Setting (P015) value.
Set the PM Motor Starting Method Selection
(H123) to 01 (Initial pole position estimation
enabled).
Increase the PM Motor Starting Current
(H117) value.
Or perform adjustments according to 6-8-6
Adjustment of PM Motor Mode Settings on
page 6-64.
Reduce the load. Or increase the accelera-
tion/deceleration time.
Reference
page
P. 3-16
P. 3-20
P. 8-29
−
P. 8-24
P. 6-25
P. 6-50
P. 6-25
P. 6-50
P. 6-25
P. 6-50
P. 6-25
P. 6-50
P. 6-25
P. 6-50
P. 6-64
P. 6-64
P. 5-32