Mitsubishi Electric FR-F700PJ Series Manual page 50

250
Selection of motor stopping method
and start signal
Pr.250 Stop selection
Used to select the stopping method (deceleration to a stop or
coasting) when the start signal turns off.
Used to stop the motor with a mechanical brake, etc. together with
switching off of the start signal.
You can also select the operations of the start signals (STF/STR).
Pr.250
Start signal
setting
(STF/STR)
STF signal: Forward
0 to 100s
STR signal: Reverse
STF signal: Start signal
STR signal: Forward/
1000s to 1100s
STF signal: Forward
9999
(initial value) STR signal: Reverse
STF signal: Start signal
STR signal: Forward/
8888
When Pr. 250 is set to "9999" (initial value) or "8888".
Output
frequency
(Hz)
Start signal ON
RUN signal
When Pr. 250 is set to values other than "9999" (initial value) or
"8888".
Output
frequency
(Hz)
Start signal
ON
RUN signal
50
When setting parameters, refer to the instruction manual (applied) and understand instructions.
Description
Stop operation
The motor is coasted to a
rotation start stop when the preset time
elapses after the start
rotation start signal is turned off.
The motor is coasted to a
stop (Pr. 250 - 1000)s after
reverse
the start signal is turned
rotation
off.
signal
rotation start
rotation start
When the start signal is
turned off, the motor
decelerates to stop.
reverse
rotation
signal
Deceleration starts
when start signal turns OFF
Deceleration time
(Time set in Pr. 8, etc.)
DC brake
Time
OFF
ON OFF
Output is shut off when set
time elapses after start
signal turned OFF
Pr. 250
The motor coasts to stop
Time
OFF
OFF
ON
251, 872
Input/output phase failure protection
selection
Pr.251 Output phase loss protection selection
Pr.872 Input phase loss protection selection
You can disable the output phase failure protection function that
stops the inverter output if one of the inverter output side (load
side) three phases (U, V, W) opens.
The input phase failure protection selection of the inverter input
side (R, S, T) can be made valid.
Pr.
Setting Range
Number
0
251
1 (initial value)
0 (initial value)
872
1
255 to 259
Display of the life of the inverter parts
Pr.255 Life alarm status display
Pr.257 Control circuit capacitor life display
Pr.259 Main circuit capacitor life measuring
Degrees of deterioration of main circuit capacitor, control circuit
capacitor or inrush current limit circuit and cooling fan can be
diagnosed by monitor.
When any part has approached the end of its life, an alarm can be
output by self diagnosis to prevent a fault.
(Use the life check of this function as a guideline since the life
except the main circuit capacitor is calculated theoretically.)
Pr. Setting
Number Range
Display whether the control circuit capacitor,
main circuit capacitor, cooling fan, and each
255 (0 to 15) parts of the inrush current limit circuit has
reached the life alarm output level or not.
(Reading only)
Display the deterioration degree of the inrush
256 (0 to 100%) current limit circuit.
(Reading only)
Display the deterioration degree of the control
257 (0 to 100%) circuit capacitor.
(Reading only)
Display the deterioration degree of the main
circuit capacitor.
258 (0 to 100%)
(Reading only)
The value measured by Pr. 259 is displayed.
Setting "1" and turning off the power starts the
measurement of the main circuit capacitor life.
259 0, 1 When the Pr. 259 value is "3" after powering
ON again, the measuring is completed. Write
the deterioration degree in Pr. 258.
260 Refer to the section about Pr.72
Description
Without output phase failure
protection
With output phase failure protection
Without input phase failure protection
With input phase failure protection
Pr.256 Inrush current limit circuit life display
Pr.258 Main circuit capacitor life display
Description