Alarm
code
Alarm
subcode
Name Description 　Check point and remedy reference
25 Hex
(Er7)
0000 Hex Tuning error
(1) The connection
between the inverter
and the motor is
missing phases
→ Ensure a correct connection between
the inverter and motor.
(2) V/f settings and
motor rated current
are not set correctly
Check that object (3004Hex-05Hex*,
3004Hex-06Hex*, {H50}, {H51}, {H52},
{H53}, {H65}, {H66}, 3007Hex-03Hex*,
3007Hex-04Hex*) data matches motor speci-
fications.
(3) Wiring between
the inverter and mo-
tor is too long
Check that wiring between the inverter and
motor does not exceed 50 m.
(Smaller inverter capacity will be more im-
pacted by wiring length)
→
Review layout so that wiring between
the inverter and motor can be made
shorter
.
　 Alternatively
, shorten wiring lengths as
much as possible.
→ Does not use automatic tuning, and
does not use automatic torque boost
　 (Set object 301FHex-0DHex/
301FHex-0EHex* = 0)
(4) Major discrepan-
cy between the inver-
ter rated capacity
and the capacity of
the connected motor
Check that the capacity of the connected mo-
tor is lower than three or more ranks of the
inverter rated capacity
, or higher than two or
more ranks.
→
Review the inverter capacity.
→ Manually set the motor constant (object
3007Hex-07Hex*, 3007Hex-08Hex*,
3007Hex-09Hex*).
→ Does not use automatic tuning, and
does not use automatic torque boost
　 (Set object 3004Hex-26Hex* = 1)
(5) A special motor,
such as a high-speed
motor
→ Does not use automatic tuning, and
does not use automatic torque boost
　 (Set object 3004Hex-26Hex* = 1)
(6) Tuning operation
during which the mo-
tor is rotated with the
brake applied (object
3007Hex-05Hex* =
2) performed
→ Tune the motor while stopped (object
3007Hex-05Hex* = 1).
→ Release the brake then tune the motor
(object 3007Hex-05Hex* = 2).
9 Troubleshooting
9-8
M1 Series EtherCAT Type User’s Manual (I670)
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