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5. PARAMETERS
5.2 (E) Environment setting parameters
Life display of the cooling fan
• When a cooling fan speed less than the specified speed is detected, the Fan alarm indication "
" (FN) appears on
the operation panel. As an alert output, bit 2 of
Pr.255
is turned ON (set to 1), and the Y90 signal and Alarm (LF) signal
are also output.
• For the terminal used for the LF signal, set "98" (positive logic) or "198" (negative logic) in any parameter from
Pr.190 to
Pr.195 (Output terminal function selection)
.
NOTE
• When the converter unit is mounted with two or more cooling fans, "FN" is displayed even only one of the fans is detected.
• Changing the terminal assignment using
Pr.190 to Pr.195 (Output terminal function selection)
may affect the other
functions. Set parameters after confirming the function of each terminal.
• For replacement of each part, contact the nearest Mitsubishi Electric FA center.
5.2.11 Maintenance timer alarm
The Maintenance timer (Y95) signal is output when the converter unit's cumulative energization time reaches the time period
set with the parameter. MT1, MT2 or MT3 is displayed on the operation panel. This can be used as a guideline for the
maintenance time of peripheral devices.
• The cumulative energization time of the converter unit is stored in the EEPROM every hour and displayed in
Pr.503
(Pr.686, Pr.688)
in 100 hours increments. The number indication on
Pr.503 (Pr.686, Pr.688)
stops at 9998 (999800 hours).
• When the value in
Pr.503 (Pr.686, Pr.688)
reaches the time (100 h increments) set in
Pr.504 (Pr.687, Pr.689)
, the
Maintenance timer (Y95) signal is output, and also "
" (MT1), "
" (MT2), or "
" (MT3) is
displayed on the operation panel.
• For the terminal used for the Y95 signal output, assign the function by setting "95" (positive logic) or "195" (negative logic)
in any parameter from
Pr.190 to Pr.195 (Output terminal function selection)
.
Pr.
Name
Initial value
Setting range
Description
503
E710
Maintenance timer 1
0
0 (1 to 9998)
Displays the converter unit's cumulative energization time in
increments of 100 hours (read-only). Writing the setting of "0"
clears the cumulative energization time while
Pr.503
= "1 to
9998". (Writing is disabled when
Pr.503
= "0".)
504
E711
Maintenance timer 1
warning output set time
9999
0 to 9998
Set the time until the Maintenance timer (Y95) signal is output.
"MT1" is displayed on the operation panel.
9999
Function disabled.
686
E712
Maintenance timer 2
0
0 (1 to 9998)
The same function as
Pr.503
.
687
E713
Maintenance timer 2
warning output set time
9999
0 to 9998
The same function as
Pr.504
.
"MT2" is displayed on the operation panel.
9999
688
E714
Maintenance timer 3
0
0 (1 to 9998)
The same function as
Pr.503
.
689
E715
Maintenance timer 3
warning output set time
9999
0 to 9998
The same function as
Pr.504
.
"MT3" is displayed on the operation panel.
9999
First power
Time
ON
Maintenance
timer1
(Pr.503)
Set "0" in
Pr.503
Y95 signal
MT1 display
OFF
ON
ON
Pr.504
9998
(999800h)
Operation example of the maintenance timer 1
(Pr.503, Pr.504)
(with both MT2 and MT3 OFF)
