Protective and Diagnostic Functions
7-19
* 1. Refer to MECHATROLINK COMMUNICATIONS INTERFACE CARD INSTRUCTIONS (TOBPC73060008) for details.
* 2. For details on replacement, refer to Chapter 8 Maintenance and Inspection
HCA
(blink-
ing)
High
Current
Alarm
Current Alarm
The output current has exceeded the
overcurrent alarm level (over 150% of
the rated current).
The load is too heavy or the accel/
decel time is too short.
Increase the acceleration/deceleration
time.
Either a specialized motor or an
excessively large motor is being used.
Verify the setting for the Inverter
capacity.
The current has risen too high while
performing speed search either during
a momentary loss in power or during
a fault restart.
Momentary losses in power or fault
restarts may occasionally trigger an
overcurrent alarm, and are not neces-
sarily indicators of an overcurrent
problem.
LT-C
(blink-
ing)
C
Mainte-
nance
Electrolytic Capacitor Maintenance
Timer
Monitor U1-61 has reached 100%.
The electrolytic capacitors have
reached their estimated maintenance
time period.
Reset constant o2-18 to “0%” after
replacing
*2
the electrolytic capacitors.
LT-F
(blink-
ing)
Fan
Mainte-
nance
Cooling Fan Maintenance Timer
Monitor U1-63 has reached 100%.
The cooling fan has reached its esti-
mated maintenance time period.
Replace the cooling fan
*2
and set con-
stant o2-10 to “0H”.
Table 7.3 Alarm Displays and Processing (Continued)
Display Meaning Probable causes Corrective Actions
To Next Page
Loading...
