Mitsubishi Electric FR-A820-00046 Instruction Manual page 441

Parameters
Fig. 5-106:
● If the lift has a load in which the rated current of the inverter is exceeded, the maximum torque
may be insufficient.
For a lift without counterweight, setting Pr. 14 "Load pattern selection" to "2 or 3" (for lift load) and
setting Pr. 19 "Base frequency voltage" appropriately give the maximum torque a greater advan-
tage than when selecting the lift operation.
NOTE The stall prevention operation level is automatically lowered according to the cumulative value of
the electronic thermal O/L relay so as to prevent an inverter overload trip (E.THT, E.THM) from
occurring.
Lift operation adjustment (Pr. 61, Pr. 64)
The application range can be expanded by setting the parameters for adjustment of Pr. 61 and Pr. 64.
Pr.
61
64
The setting range for the FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower.
The setting range for the FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher.
NOTES Even if the lift operation has been selected, inputting the JOG signal (Jog operation), RT signal
(second function selection) or X9 signal (third function selection) during an inverter stop will disa-
ble the automatic acceleration/deceleration and give priority to JOG operation, second function
selection or third function selection. Note that during operation, an input of JOG and RT signal
does not have any influence even when the automatic acceleration/deceleration is enabled.
Even if Pr. 61 and Pr. 64 are set, changing Pr. 292 automatically resets to the initial setting (9999).
Set Pr. 61 and Pr. 64 after setting Pr. 292.
Parameters referred to
Pr. 0
Pr. 13
Pr. 14
Pr. 19
Pr. 2
Pr. 570
FR-A800
(F) Setting of acceleration/deceleration time and acceleration/deceleration pattern
When Pr. 0 = 6 %
Torque boost 0 %
Regenerative current
Torque boost in dependence of the output current
Name Setting range
0 to 500 A
Reference
0 to 3600 A
current
9999 (initial value)
Starting
0 to 10 Hz
frequency for
9999 (initial value)
elevator mode
Torque boost
Starting frequency
Load pattern selection
Base frequency voltage
Stall prevention operation level
Multiple rating setting
Torque boost (%)
Pr. 292 = "5"
Pr. 292 = "6"
6 %
Pr. 0
0 100 120 140
115
Description
Set the rated motor current value when the motor capacity and
inverter capacity differ, etc. Set the reference current (A) of the
stall prevention operation level.
The rated inverter output current value is the reference.
Set the starting frequency for the lift operation.
Starting frequency is 2 Hz.
Driving current
(%)
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