Omron RX2 Series User Manual page 333

Item
IMPE Mg-pole
position offset,
1st-motor
DC braking
selection,
1st-motor
DC braking force at
start, 1st-motor
DC braking active
time at start,
1st-motor
Over current detec-
tion level,
1st-motor
*1. On the parameter about the current and the voltage, the figures and the units to be handled vary in the setting
path.
1) Operator or CX-Drive: 0.1 A or 0.1 V (When CX-Drive is operated, set [CF-11] Resister data selection to 00
(A,V). When the data of [CF-11] Resister data selection is not set to 00 (A,V), it is not set or displayed correctly.)
2) Modbus: The current and the voltage vary, depending on the setting of Resister data selection [CF-11].
When [CF-11] Resister data selection is set to 00 (A,V), 0.1 A, 0.1 V
When [CF-11] Resister data selection is set to 01 (%), 0.01% (Rated ratio)
3) Drive programming: 0.01% (Rated ratio)
Phenomenon
At the start, rotating
temporarily in the
opposite direction to
the intended one.
Over current occurs at
the start
At the start, the motor
loses synchronization
and no acceleration is
observed.
A long starting time is
required.
Fluctuating revolu-
tions occur at low
speeds (at the lowest
frequency (switch) or
even lower)
Hunting occurs at low
speeds (at the lowest
frequency (switch) or
even lower)
Shock or over current
occurs at about the
lowest frequency
(switch).
High-function General-purpose Inverter RX2 Series User's Manual
Parameter Data
[Hd137] 0 to 359°
[AF101] 01
[AF108] 0 to 100(%)
0.00 to 60.00
[AF109]
(s)
Inverter ND rated
[bb160] current ×
(0.2 to 2.2)
Estimated cause(s)
Enable the initial-position estimation function. [Hd132]=01
Misalignment of the
output phases and the
In the cases of a slight opposite-direction movement even in
motor's magnetic-pole
the initial-position estimation function, make an adjustment by
positions
incrementing [Hd137] by 5° at a time.
• Insufficient starting • Enable the initial-position estimation function. [Hd132]=01
torque
• Set the DC braking at the start [AF101] = 01, and after the
• Misalignment of the
output phases and
the motor's mag-
netic-pole positions
A long phase-synchro- When the magnetic-pole positions are synchronized in the DC
nization time is braking at the starting, enable the initial-position estimation
required. function instead of the DC braking at the start. [Hd132]=01
Insufficient starting Make an adjustment by incrementing the braking force at the
torque start [AF108] by 5% each time.
Decrement the motor constant R [Hd110] little by little until it
reaches a value = set value × 0.7.
There is a motor con-
Increment little by little each of the motor constant Ld [Hd112]
stant error.
and the motor constant Lq [Hd112] until they reach their
respective values = set values × 1.4. Note, however that Ld ≤
Lq.
The speed response is Make an adjustment by incrementing the speed response
too low. [HA115] by 5% each time.
Load fluctuation
occurs at around the Adjust the lowest frequency (switch) [Hd130].
switch.
Description
To conduct corrections in a case where the ini-
tial position estimation operation has a certain
error.
Internal DC braking: enabled
To adjust the DC braking force. Setting of 100%
will provide maximum braking force.
Enabled during the internal DC braking.
When the operation command is turned ON, DC
braking is started.
To Set the level at which the over current is
detected.
Exemplar measures to be taken
start, the time needed for the motor to be stabilized is set in
[AF109].
In addition, make an adjustment by incrementing the braking
force at the start [AF108] by 5% each time.
7 Advanced Settings
Default
data
0
00
30
0.00
2.2 ×
Inverter
ND
rated
current
7 - 25
7