7 Advanced Settings
7 - 24
High-function General-purpose Inverter RX2 Series User’s Manual
In this control mode, operations of magnetic-pole position estimation, synchronous start control, and
sensorless vector control are started in this order.
In the magnetic-pole position estimation, it is possible to select whether the motor is started after the
motor’s magnetic-pole positions are estimated by use of the initial-position estimation function or the
magnetic-pole positions are synchronized by use of the DC braking function.
In the case of starting after the magnetic-pole position estimation, estimation operation is conducted at
the start by setting the Starting Method for Sync.M, 1st-motor [Hd132] at 01.
In the case of the Starting Method for Sync.M, 1st-motor [Hd132] being set at 00, the motor is started as
its magnetic poles are synchronized with the output phases. In the cases where the magnetic poles and
the output phases are unsynchronized by a great amount, or in the cases that require a certain starting
torque, use the starting-time DB to synchronize the magnetic-pole positions and the output phases
before the acceleration.
Use [AF108] to adjust the current during a synchronous starting. Adjustment is possible even when
[AF101] = 00. When a larger torque is needed than what is needed in the synchronous starting mode,
use of IVMS start mode may improve the situation.
The minimum Frequency for Sync.M-SLV, 1st-motor [Hd130] at which the synchronous start control is
switched to the sensorless vector control is adjusted at the lowest frequency (switching).
When a motor is hunting and vibrating, an adjustment of the speed response for Async.M, 1st-motor
[HA115] and/or the no-Load current for Sync.M-SLV, 1st-motor [Hd131] may improve the state of the
motor.
When the starting-time DB function is used at the start, see
7-5-2 Startup DC Injection Braking
Parameter
Synchronous-start Type Sensorless Vector Control (SM/PMM)
Item
Parameter
Data
Description
Default
data
Control mode
selection,
1st-motor
[AA121]
11
To use synchronous-start type sensorless vec-
tor control (SM/PMM)
00
Speed response
for Async.M,
1st-motor
[HA115]
0 to 1000(%)
To adjust the responsiveness of the control.
A larger value enhances the responsiveness.
100
Minimum Fre-
quency for
Sync.M-SLV,
1st-motor
[Hd130]
0 to 50(%)
The frequency at which the sensorless vector
control is started.
Set the ratio to the base frequency [Hd104].
8
No-Load current
for Sync.M-SLV,
1st-motor
[Hd131]
0 to 100(%)
Set the ratio of the no-load current to the rated
current during the sensorless vector control.
10
Starting Method for
Sync.M, 1st-motor
[Hd132]
00
Initial position estimation is disabled.
00
01
Initial position estimation is enabled.
IMPE 0V wait num-
ber for Sync.M,
1st-motor
[Hd133]
0 to 255
This is a stand-by adjustment value to stabilize
the reference value for the initial position esti-
mation detection.
10
IMPE detect wait
number for
Sync.M, 1st-motor
[Hd134]
0 to 255
This is an adjustment value to stabilize the cur-
rent rise of the initial position estimation opera-
tion.
10
IMPE detect num-
ber for Sync.M,
1st-motor
[Hd135]
0 to 255
This is a detection-operation adjustment value
of the initial position estimation operation.
30
IMPE voltage gain
for Sync.M,
1st-motor
[Hd136]
0 to 200(%)
This is a output-voltage adjustment gain of the
initial position estimation operation.
100
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
