8 Applied Settings
8 - 42
High-function General-purpose Inverter RX2 Series User’s Manual
Parameter
Input Terminal Function
Setting [bA120] overcurrent suppression selection to 01 enables the overcurrent suppression function.
This function suppresses the overcurrent caused by steep current increase due to sudden acceleration,
etc.
If the overcurrent suppression function is enabled, the overcurrent suppression function will be acti-
vated when the motor current exceeds the set value for [bA121] with momentary current increase.
Precautions for Correct Use
• Disable this function when using for elevators, etc. Suppressing the current causes insuffi-
cient torque, which may result in sliding down of the panier or anything hanging.
• The overcurrent tripping may take place even if this function is enabled if the current
increases sharply due to shock load, etc.
• This function will be automatically enabled during DC braking.
• This function is enabled during position/torque control.
• This function is disabled when synchronous motor (permanent magnet motor) is used.
Item
Parameter
Data
Description
Default
data
Overload restriction 1
mode selection,
1st-motor
Overload restriction 2
mode selection,
1st-motor
[bA122]
[bA126]
00
Disabled
01
01
Enabled during acceleration and at constant
speed
02
Enabled at constant speed
03
Enabled during acceleration and at constant
speed (Speed increases during regenera-
tion)
Overload restriction 1
active level, 1st-motor
Overload restriction 2
active level, 1st-motor
[bA123]
[bA127]
Inverter rated
current
× (0.2 to 2.0)
*1
*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 detected, 0.1 V
When [CF-11] Resister data selection is set to 01 (%), 0.01% (Rated ratio)
3) Drive programming: 0.01% (Rated ratio)
Overload limit function is activated when the
output current exceeds this set value.
1.5×
Inverter
rated
current
Overload restriction 1
action time, 1st-motor
Overload restriction 2
Action time, 1st-motor
[bA124]
[bA128]
0.10 to
3600.00(s)
Acceleration/Deceleration time when
exceeded the overload limit level.
1.00
Item
Parameter
Data
Description
Input terminal function
selection
[CA-01] to
[CA-11]
038
[OLR] Overload limit switching
OFF: Overload limit 1 enabled.
ON: Overload limit 2 enabled.
8-2-2
Overcurrent Suppression Selection
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: ......
