Diagnostics and maintenance 385
ACH550-01 User's Manual
Note 1. Even when the relay output is configured to indicate alarm conditions
(e.g. parameter 1401
RELAY OUTPUT 1 = 5 (ALARM) or 16 (FLT/ALARM), this alarm
is not indicated by a relay output.
2024
RESERVED Not used.
2025
FIRST START Signals that the drive is performing a First Start
evaluation of motor characteristics. This is normal
the first time the motor is run after motor
parameters are entered or changed. See
parameter 9910
ID RUN for a description of motor
models.
2026
INPUT PHASE
LOSS
The intermediate DC circuit DC voltage is
oscillating due to missing input power line phase or
blown fuse. The alarm is generated when the DC
voltage ripple exceeds 14% of the nominal DC
voltage.
• Check input power line fuses
• Check for input power supply imbalance.
2027
USER LOAD
CURVE
This alarm warns that the condition defined by
parameter 3701
USER LOAD C MODE has been valid
longer than half of the time defined by 3703
USER
LOAD C TIME.
2028
START DELAY Shown during the Start delay. See parameter
2113
START DELAY.
Alarm
code
Display Description
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