Omron MX2 - Electronic Thermal Characteristic Curve; Electronic Thermal Characteristic

103
"B" Group: Fine Tuning Functions Section 3-6
!WARNING When parameter B012, level of electronic thermal setting, is set to motor FLA
rating (Full Load Ampere nameplate rating), the inverter provides solid state
motor overload protection at 115% of motor FLA or equivalent. If parameter
B012 exceeds the motor FLA rating, the motor may overheat and be dam-
aged. Parameter B012, level of electronic thermal setting, is a variable param-
eter.
Electronic thermal characteristic curve: The characteristic curve depends
on dual rate setting in b049 as follows.
Electronic thermal characteristic: The characteristic curve is unique, but
reduction rate depending on frequency is selected in b013.
• Reduced Torque (b013=00)
b018 Free setting electronic thermal
~current2
Range is 0 to inverter rated cur-
rent Amps
8 0.00 Amps
b019 Free setting electronic thermal
~freq.3
Range is 0 to 400 Hz
*3
8 0.0 Hz
b020 Free setting electronic thermal
~current3
Range is 0 to inverter rated cur-
rent Amps
8 0.00 Amps
*1
Up to 1000Hz for High frequency mode (d060 set to "2")
*2
Up to 1000Hz for High frequency mode (d060 set to "2")
*3
Up to 1000Hz for High frequency mode (d060 set to "2")
"B" Function Run
Mode
Edit
Defaults
Func.
Code
Name Description EU Units
Trip time (s)
Percentage of
b012/b212
60
3.0
0
200%150%109%
b049=00 (HD )
Trip time (s)
Percentage of
b012/b212
60
0.5
0
150%120%116%
b049=01 (ND )
Example: MX2-A2015**, Base FQ=60Hz, ND setting (Rated current 9.6A= b012)
11.1
(116%)
11.5
(120%)
14.4[A]
(150%)
0
60
3.0
Trip time
[s]
60Hz (Reduction rate: x1.0)
Reduction rate
Output frequency [Hz]
x1.0
5
16
50
x0.8
x0.6
0
6
20
60
0
Base FQ
Motor current [A]
8.9
(92.8%)
9.2
(96%)
11.5[A]
(120%)
0
60
3.0
Trip time
[s]
20Hz (Reduction rate: x0.8)
Motor current [A]