6
-184
Related Alarm Displays
When setting a multi-function contact output H2-
to 2F, the alarm is displayed on the Digital Operator as
shown below.
Settings Required After Replacement of Cooling Fan or Electrolytic
Capacitor
•
Set o2-10 to 0 after replacing the cooling fan.
•
Set o2-18 to 0 after replacing the electrolytic bus capacitor.
Refer to
Chapter 8 Maintenance and Inspection
for the replacement procedure.
Related Constants
* Applicable for G7-Series Inverters with software versions PRG: 1039 or later.
Display
Meaning
Probable causes
Corrective Actions
LT-C
(blinking)
C Maintenance
Electrolytic Capacitor Main-
tenance 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 the electrolytic capacitors.
LT-F
(blinking)
Fan Maintenance
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 and set con-
stant o2-10 to “0H”.
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO-
BUS
Regis-
ter
Display
V/f
V/f
with
PG
Open
Loop
Vec-
tor
1
Flux
Vec-
tor
Open
Loop
Vec-
tor
2
o2-10
*
Fan opera-
tion time set-
ting
Set the initial value of the fan
operation time using time
units.
The operation time accumu-
lates from the set value.
0 to
65535
0 hr
No
A
A
A
A
A
50EH
Fan ON Time
Set
o2-18
*
Capacitor
maintenance
setting
Allows the user to set the
maintenance time for the
electrolytic capacitors (U1-
61). The user can reset the
accumulated operation time
back to zero, or to some other
desired value.
0 to
150
0%
No
A
A
A
A
A
51DH
C Mainte-
nanceSet