Increase Cooling Fan Life; Slip Compensation; Selection Of Motor Stopping Method And Start Signal; Input/Output Phase Failure Protection Selection - Mitsubishi Electric FR-F700 Manual

Pr.

Increase cooling fan life

244
Pr.244 Cooling fan operation selection
You can control the operation of the cooling fan (200V class
2.2K or more, 400V class 3.7K or more) built in the inverter.
Pr. 244 Setting
The cooling fan operates at power on.
0 Cooling fan on/off control invalid (The cooling
fan is always on at power on)
Cooling fan on/off control valid
The fan is normally on during inverter
1 (initial value) operation. The fan switches on/off according to
the temperature during a stop of the inverter
whose status is monitored.
Pr.

Slip compensation

245 to 247
Pr.245 Rated slip
Pr.247 Constant-output region slip compensation selection
The inverter output current may be used to assume motor slip to
keep the motor speed constant.
Selection of motor stopping
Pr.
250
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: Foward
rotation start
0 to 100s
STR signal: Reverse
rotation start
STF signal: Start signal
STR signal: Forward/
1000s to 1100s
reverse
rotation signal
STF signal: Foward
rotation start
9999
STR signal: Reverse
rotation start
STF signal: Start signal
STR signal: Forward/
8888
reverse
rotation signal
When Pr. 250 is set to "9999" (initial value) or "8888".
Start
ON
signal
RUN
signal ON
When Pr. 250 is set to values other than "9999" (initial value) or "8888".
ON
Start signal
ON
RUN signal
indicates simple mode parameters and
Pr.
Description
Pr.246 Slip compensation time constant
Description
Stop operation
The motor is coasted to a
stop when the preset time
elapses after the start
signal is turned off. The
motor is coasted to a stop
(Pr. 250 - 1000)s after the
start signal is turned off.
When the start signal is
turned off, the motor
decelerates to stop.
Deceleration starts
when start signal turns off
Deceleration time
(Time set in Pr. 8, etc.)
DC brake
Time
OFF
OFF
Output is shut off when set
time elapses after start signal
turned off
Pr.250
Motor coasts to stop
Time
OFF
OFF
indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.
Pr.
Input/output phase failure
Pr.
251, 872
protection selection
Pr.251 Output phase failure 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/L1, S/L2, T/L3) can be made valid.
Pr. Number Setting Range
0
251
1 (initial value)
0 (initial value)
872
1
Refer to the section about Pr. 73 and
Pr.
252, 253
other relevant parameters.
Display of the life of the
Pr.
255 to 259
inverter parts
Pr.255 Life alarm status display
Pr.257 Control circuit capacitor life display Pr.258 Main 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
258 (0 to 100%) circuit capacitor. 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.
0, 1
259 When the Pr. 259 value is "3" after powering on
(2, 3, 8, 9)
again, the measuring is completed. Read the
deterioration degree in Pr. 258.
Pr. Refer to the section about Pr. 72.
260
Pr.872 Input phase failure protection selection
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
Description
42