(A) Application parameters
PARAMETERS
481
5
GROUP
A
5.14.5 Load torque high speed frequency control
Connection diagram
The applied terminals differ by the settings of Pr.180 to Pr.189 (input terminal function selection).
Load torque high-speed frequency control is a function
that automatically sets the maximum operable frequency
according to the load.
The load size during power driving is estimated by
detecting average currents at set timings after a start.
When the load is light, the frequency is increased from
the originally-set frequency. (In regenerative driving, the
frequency is not increased.)
This function is designed to increase speed automatically
under light load, for example to minimize the incoming/
outgoing time in a multi-story parking lot.
Pr. Name
Initial value
Setting
range
Description
FM CA
4
D301
Multi-speed setting (high
speed)
60 Hz 50 Hz 0 to 590 Hz Set the higher-speed frequency.
5
D302
Multi-speed setting
(middle speed)
30 Hz 0 to 590 Hz Set the lower-speed frequency.
270
A200
Stop-on contact/load
torque high-speed
frequency control
selection
0
0 Normal operation
1 Stop-on-contact control (Refer to page 478.)
2 Load torque high-speed frequency control
3
Stop-on-contact (refer to page 478) + load torque high- speed
frequency control
11 Stop-on-contact control
E.OLT invalid
under stop-on-
contact control
13
Stop-on-contact + load torque high-
speed frequency control
(Refer to page 478.)
271
A201
High-speed setting
maximum current
50% 0 to 400%
Set the upper and lower limits of the current at high and
middle speeds.
272
A202
Middle-speed setting
minimum current
100% 0 to 400%
273
A203
Current averaging range
9999
0 to 590 Hz
Set the average current during acceleration from (Pr.273 1/
2) Hz to (Pr.273) Hz.
9999
Set the average current during acceleration from (Pr.5 1/2)
Hz to (Pr.5) Hz.
274
A204
Current averaging filter
time constant
16 1 to 4000
Set the time constant of the primary delay filter relative to the
output current.
(The time constant [ms] is 0.5 Pr.274, and the initial value is
8 ms.)
A larger setting results in a stable operation with poorer
response.
<Without high-speed
frequency control>
<With high-speed
frequency control>
Light
Faster
Whether there is a load or
not, the lift is moved
vertically at the same speed.
The lift with a light load or without
a load is moved faster than the lift
with a load.
(The output frequency is increased
only during power driving.)
Mechanical
brake
R/L1
S/L2
T/L3
Motor
MC
STF
CS(X19)
∗
SD
Start signal
Load torque high-speed frequency
MCCB
Power supply
U
V
W
Sink logic
Pr.186 = 19
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