Constant Torque Characteristics; Overload Limit/Overload Warning - Omron JX User Manual

Constant Torque Characteristics

•Do not skip this setting when using a constant torque motor.
•Multiplied by the time limit characteristics set in b012/212 for each frequency.
Electronic thermal level
X1.0
X0.667
0 5
Reduced Torque Characteristics 2
•Multiplied by the time limit characteristics set in b012/212 for each frequency.
Electronic thermal level
X1.0
X0.8
0 20

Overload Limit/Overload Warning

This function helps prevent an overcurrent trip due to rapid load fluctuation in acceleration or
constant speed operation.
Parameter No. Function name
b021 Overload limit selection
2nd overload limit
*
b221
b022 Overload limit level
*
b222 2nd overload limit level
b023 Overload limit parameter
2nd overload limit
*
b223
parameter
Overload limit source
b028
2nd overload limit source
*
b228
C041 Overload warning level
*
C241 2nd overload warning level
Related parameters
* To switch to the 2nd control, allocate 08 (SET) to the multi-function input terminal and then turn it on.
(Example) JX-AB007 (Rated current: 4.0 A), b012 = 4.00 (A),
Output frequency = 2.5 Hz
Trip time (s)
60
4
Inverter output
0
frequency (Hz)
60
(Example) JX-AB007 (Rated current: 4.0 A), b012 = 4.00 (A),
Output frequency = 40 Hz
Time before trip (s)
60
4
Inverter output
frequency (Hz)
0
60
00: Disabled
01: Enable in acceleration/constant
speed operation
02: Enabled in constant speed
selection
operation
0.1 × Rated current to 1.5 × Rated
current
0.1 to 3000.0
(Deceleration time while this function
is in operation)
selection
00: b022, b222 set values
01: Input terminal O
selection
0.0: Does not operate.
0.1 × Rated current to 2.0 × Rated
current (Outputs OL signal when the
overload warning level is reached.)
Motor current (A)
(Ratio to the rated current of the Inverter)
3.1
4.0 5.32
(77.4%)
(100%) (133%)
Motor current (A)
(Ratio to the rated current of the Inverter)
4.16 5.4 7.2
(104%) (135%) (180%)
Data
C021, C026
4-2 Function Mode
Default setting Unit
⎯
01
⎯
01
1.5 × Rated
A
current
1.5 × Rated
A
current
1.0 s
1.0 s
⎯
00
⎯
00
Rated current
A
Rated current
4-33
4