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“B” Group: Fine-Tuning Functions
Configuring Drive
Parameters
3–32
Suppose the electronic thermal setting (B012) is set to 44 Amperes. The left graph below shows
the effect of the free setting torque characteristic curve. For example, at (B017) Hz, the output
current level to cause overheating in a fixed time period is reduced by a factor of (B018). The
right graph below shows the reduced trip current levels in those conditions for given trip times.
Any intelligent output terminal may be programmed to indicate a thermal warning [THM].
Parameter C061 determines the warning threshold. Please see “
Thermal Warning Signal” on
page 4–47 for more details.
Tr ip
time (s)
60
0.5
0
(x) (y) (z)
A
(x) = B018 value x 116%
(y) = B018 value x 120%
(z) = B018 value x 150%
Reduced trip current at (B017) Hz
“B” Function
Run
Mode
Edit
Lo Hi
Defaults
Units
SRW Display
Func.
Code
Name Description
–FE2
(CE)
–FU2
(UL)
–FR
(Jpn)
B012 Level of electronic
thermal setting
Set a level between 50% and
120% of the inverter rated
current
✘ ✔ rated current for
each inverter model
%
>b012 E-THM
LEVEL 0016.5A
B212 Level of electronic
thermal setting, 2nd
motor
Set a level between 50% and
120% of the inverter rated
current
✘ ✔ rated current for
each inverter model
%
>b212 2E-THM
LEVEL 0016.5A
B013 Electronic thermal
characteristic
Select from three curves,
option codes:
00 Reduced torque
01 Constant torque
02 V/f free-setting
✘ ✔ 01 00 00 —
>b013 E-THM
CHAR CRT
B213 Electronic thermal
characteristic, 2nd
motor
Select from three curves,
option codes:
00 Reduced torque
01 Constant torque
02 V/f free-setting
✘ ✔ 01 00 00 —
>b213 2E-THM
CHAR CRT
B015 Free setting, electronic
thermal frequency (1)
Range is 0.0 to 400.0 Hz ✘ ✔ 0. 0. 0. Hz
>b015 E-THM
F1 0000Hz
B016 Free setting, electronic
thermal current (1)
Range is 0.0 to 1000. A ✘ ✔ 0.0 0.0 0.0 A
>b016 E-THM
A1 0000.0A
B017 Free setting, electronic
thermal frequency (2)
Range is 0.0 to 400.0 Hz ✘ ✔ 0. 0. 0. Hz
>b017 E-THM
F2 0000Hz
B018 Free setting, electronic
thermal current (2)
Range is 0.0 to 1000. A ✘ ✔ 0.0 0.0 0.0 A
>b018 E-THM
A2 0000.0A
B019 Free setting, electronic
thermal frequency (3)
Range is 0.0 to 400.0 Hz ✘ ✔ 0. 0. 0. Hz
>b019 E-THM
F3 0000Hz
B020 Free setting, electronic
thermal current (3)
Range is 0.0 to 1000. A ✘ ✔ 0.0 0.0 0.0 A
>b020 E-THM
A3 0000.0A