Mitsubishi Electric F700 User Manual

219
Useful functions
4
PARAMETERS
(5) Cooling fan life display
⋅ The cooling fan speed of 50% or less is detected and "FN" is displayed on the operation panel (FR-DU07) and
parameter unit (FR-PU04/FR-PU07). As an alarm display, Pr. 255 bit 2 is turned on and also an alarm is output to
the Y90 signal.
4.21.3 Maintenance timer alarm (Pr. 503, Pr. 504)
⋅ The cumulative energization time of the inverter is stored into the EEPROM every hour and indicated in Pr. 503
Maintenance timer in 100h increments. Pr. 503 is clamped at 9998 (999800h).
⋅ When the Pr. 503 value reaches the time set to Pr. 504 Maintenance timer alarm output set time (100h increments), the
maintenance timer alarm output signal (Y95) is output.
⋅ For the terminal used for the Y95 signal output, assign the function by setting "95" (positive logic) or "195" (negative
logic) to any of Pr. 190 to Pr. 196 (output terminal function selection).
POINT
For the accurate life measuring of the main circuit capacitor, perform after more than 3 hrs passed since the turn off
of the power as it is affected by the capacitor temperature.
REMARKS
⋅ When the inverter is mounted with two or more cooling fans, the life of even one cooling fan is diagnosed.
CAUTION
⋅ For replacement of each part, contact the nearest Mitsubishi FA center.
When the cumulative energization time of the inverter reaches the parameter set time, the maintenance timer
output signal (Y95) is output. (MT) is displayed on the operation panel (FR-DU07).
This can be used as a guideline for the maintenance time of peripheral devices.
Parameter
Number
Name Initial Value Setting Range Description
503 Maintenance timer 0 0 (1 to 9998)
Display the cumulative energization time of
the inverter in 100h increments.
Reading only
Writing the setting of "0" clears the
cumulative energization time.
504
Maintenance timer alarm output
set time
9999
0 to 9998
Set the time taken until when the
maintenance timer alarm output signal
(Y95) is output.
9999 No function
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 156.)
CAUTION
⋅ The cumulative energization time is counted every hour. The energization time of less than 1h is not counted.
⋅ When terminal assignment is changed using Pr. 190 to Pr. 196 (output terminal function selection), the other functions may be
affected. Please make setting after confirming the function of each terminal.
♦ Parameters referred to ♦
Pr. 190 to Pr. 196(output terminal function selection) Refer to page 107
First power ON
Maintenance
timer
(Pr. 503)
Set "0" in Pr.503
Y95 signal
MT display
OFF ON
Time
ON
Pr.504
9998
(999800h)

Mitsubishi Electric F700 Specifications

General

Brand	Mitsubishi Electric
Model	F700
Category	Inverter
Language	English