Omron M1 Series User Manual page 578

7 Other Functions
Parame-
ter No.
Anti-regenerative Con-
H69
trol Function Selection
Anti-regenerative Con-
H114
trol Level
Frequency Rising Limit
H76
for Torque Limit
Related functions
• Anti-regenerative control sometimes increases the deceleration time.
• When the braking unit is connected, do not use anti-regenerative control. Anti-regenerative control
sometimes acts simultaneously with operation of the braking unit and the deceleration time is not as
set.
• When the deceleration time is too short, the Main Circuit DC Voltage of the inverter sometimes rises
quickly and anti-regenerative control cannot keep up. In instances like this, set a longer deceleration
time.
Torque Limit (H69 = 2, 4)
• A feature is that response is high and an overvoltage trip is less likely to occur even by an impact
load. The frequency control value can be adjusted by Anti-regenerative Control Level (H114), and,
when the Anti-regenerative Control Level (H114) is increased, frequency control increases.
• This is enabled during acceleration, constant speed and deceleration.
• The output frequency is controlled until braking torque reaches almost 0 (zero).
• Although Anti-regenerative Control Level (H114) can be adjusted, normally adjustment is not re-
quired.
• When the output frequency is limited, an overvoltage trip sometimes is generated as anti-regenera-
tive control is limited. Anti-regenerative capability can be improved by setting a larger Frequency
Rising Limit for Torque Limit (H76).
Main Circuit DC Voltage Control (H69 = 3, 5)
• This is enabled only at deceleration.
• When the main circuit intermediate voltage exceeds limitation level, the output frequency is control-
led so that the main circuit intermediate voltage is lowered.
• The regeneration capacity of an inverter can be made use of to shorten the deceleration time.
• When "Main Circuit DC Voltage control with forced stop after three times deceleration time has
passed" has been set, anti-regenerative control is suspended and the motor is stopped according to
the selected deceleration time when a time three times of the currently selected deceleration time
7-86
Function name
0: Disable
2: Torque limit control with forced stop af-
ter three times deceleration time has
passed
3: Main Circuit DC Voltage control with
forced stop after three times deceleration
time has passed
4: Torque limit control without forced stop
5: Main Circuit DC Voltage control without
force-to-stop
0.0 to 50.0
999: Standard control level
0.0 to 590.0 Hz
E01 to E05, E98, E99
Data Default data
M1 Series Standard Type User's Manual (I669)
Unit
0 -
999 %
5.0 Hz