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"B" Group: Fine Tuning Functions Section 3-6
3-6-22 DC Bus AVR (Automatic Voltage Regulation) for Deceleration
Settings
This function is to achieve
stable DC bus voltage in case
of deceleration. DC bus volt-
age rises due to regeneration
during deceleration. When
this function is activated
(B130=01 or 02), inverter con-
trols the deceleration time so
that the DC bus voltage not to
go up to the overvoltage trip
level, and leads to the trip-
less operation during deceler-
ation.
Please note that the actual
deceleration time can be
longer in this case.
3-6-23 STO (Safe Torque Off) Setting
Please refer to Appendix E Safety (ISO 13849-1) on page 333 for detailed
information.
3-6-24 Inverter Mode Setting
Besides Dual rating selection (b049), MX2 supports two different operation
modes, standard mode and high frequency IM mode.
In high frequency IM mode, the max. output frequency is up to 1000 Hz. Be
sure to set HD mode (b049=00) at first before switching to high frequency
mode. In high frequency mode, it cannot be changed to ND mode.
In high frequency mode, SLV mode is not available.
"B" Function Run
Mode
Edit
Defaults
Func.
Code
Name Description EU Units
B130 Deceleration overvoltage sup-
pression enable
00 Disabled
01 Enabled
02 Enabled with accel.
8 00 –
B131 Decel. overvolt. suppress level DC bus voltage of suppression.
Range is:
200 V class 330 to 395
400 V class 660 to 790
8 380/
760
V
b132 Decel. overvolt. suppress
const.
Accel. rate when b130=02.
Set range: 0.10 ~ 30.00 sec.
8 1.00 sec
B133 Decel. overvolt. suppress
proportional gain
Proportional gain when b130=01.
Range is: 0.00 to 5.00
9 0.2 –
B134 Decel. overvolt. suppress
integral time
Integration time when b130=01.
Range is: 0.00 to 150.0
9 0.2 sec
"B" Function Run
Mode
Edit
Defaults
Func.
Code
Name Description EU Units
b145 GS input mode Two option codes:
00 No trip (Hardware shutoff
only)
01 Tr ip
8 00
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