Elevator Mode (Automatic Acceleration/Deceleration) (Pr. 61, Pr. 64, Pr. 292) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

4.10.3 Elevator mode (automatic acceleration/deceleration) (Pr. 61, Pr. 64, Pr. 292)

Operation matching a load characteristic of elevator with counterweight can be performed.
Parameter
Name
Number
61 Reference current
Starting frequency for
64
elevator mode
Automatic acceleration/
292
deceleration
(1) Elevator mode
⋅ When "5" or "6" is set in Pr. 292 Automatic acceleration/deceleration , elevator mode is selected and each setting is
changed as in the table below.
⋅ Enough torque is generated during power driving and the torque boost value is automatically changed during
regeneration and operation without load so that overcurrent protection function does not activate due to over excitation.
Normal Mode
Pr. 0
Torque boost
(6/4/3/2%)
Starting
Pr. 13 (0.5Hz)
frequency
Base frequency
Pr. 19 (9999)
voltage
Stall prevention
Pr. 22 (150%) etc.
operation level
⋅ When operating the elevator with load more than the rated inverter current, the maximum torque may become insufficient.
For the elevator without counterweight, setting "2 or 3" (for elevator load) in Pr. 14 Load pattern selection and an appropriate
value in Pr. 19 Base frequency voltage will generate larger maximum torque than when elevator mode is selected.
(2) Adjustment of elevator mode (Pr. 61, Pr. 64)
⋅ By setting the adjustment parameters Pr. 61 and Pr. 64, the application range can be made wider.
Parameter
Name
Number
Reference
61
current
Starting
64 frequency for
elevator mode
REMARKS
⋅ Even if automatic acceleration/deceleration 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 switch to the normal operation and give
priority to jog operation or second and third function selection. Note that JOG and RT signal input is invalid even if JOG signal
and RT signal are input during operation with acceleration/deceleration selected.
⋅ Elevator mode is invalid when advanced magnetic flux vector, real sensorless vector control or vector control is selected.
⋅ Since the Pr. 61 and Pr. 64 settings automatically return to the initial value (9999) if the Pr. 292 setting is changed, set Pr. 292 first
when you need to set Pr. 61 and Pr. 64.
Initial
Setting Range
Value
55K or less
9999 75K or more
9999
0
Elevator Mode
Pr. 292=5 Pr. 292=6
Changes according to the output
current (right chart)
Pr. 64 (2Hz)
Accelerate after maintaining 100ms
220V
150%
Setting Range
55K or less 0 to 500A
75K or
0 to 3600A
more
9999 (initial value)
0 to 10Hz
9999 (initial value)
0 to 500A
Set the reference current for elevator mode.
0 to 3600A
9999 Rated inverter current value reference
Set the starting frequency for the elevator
0 to 10%
mode.
9999 Starting frequency 2Hz
0 Normal mode
Minimum acceleration/
1
deceleration (without brake)
Minimum acceleration/
11
deceleration (with brake)
Optimum acceleration/
3
deceleration
Elevator mode 1
5
(stall prevention operation level 150%)
Elevator mode 2
6
(stall prevention operation level 180%)
7, 8 Brake sequence mode 1, 2 (Refer to page 207.)
When Pr.0=6%
Torque boost (%)
Torque boost 0%
Regenerative
current
180%
Description
For example, when the motor and inverter are different in
capacity, set the rated motor current value. Set reference
current (A) of the stall prevention operation level
The rated inverter output current is defined as reference.
Set the starting frequency for the elevator mode.
Starting frequency 2Hz
Set V/F pattern
V/F V/F V/F
Description
(Refer to page
174.)
Pr.292= "5"
Pr.292= "6"
6%
Pr.0
3%
Driving
0 100 120 140
current
115
(%)
159
Pr.60
page 265
Pr.62
page 174
Pr.63
page 174
Pr.65
page 260
Pr.291
page 247
Pr.293
page 174
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