Omron 3G3RX - Regenerative Braking Function; Cooling Fan Control

4-74
4-2 Function Mode
4
Functions
Regenerative Braking Function
•This function applies to the Inverter models with a built-in regenerative braking circuit
(3G3RX-A2220/A4220 or lower models).
•With the built-in regenerative braking circuit, this function allows an external braking resistor to
consume the motor's regeneration energy as heat.
This function is useful for a system in which the motor works as a generator when it is rapidly
decelerated.
•To use this function, configure the following settings.
* The regenerative braking function ON level conforms to the voltage setting for the Inverter's internal converter
(DC unit).
Cooling Fan Control
•You can set whether to operate the Inverter's cooling fan constantly or only during Inverter
operation.
Note: If a momentary power interruption occurs or the power is shut off while the cooling fan is in operation, the
cooling fan stops temporarily and restarts automatically after power recovery.
Parameter No. Function name Data Default setting Unit
b090
Usage rate of
regenerative
braking function
0.0: Does not operate.
0.0 to 100.0:
A regenerative braking usage rate for 100 seconds
can be set, in increments of 0.1%.
If the set usage rate is exceeded, a braking resistor
overload trip (E06) occurs.
0.0 %
b095
Regenerative
braking function
operation selection
00: OFF (Disabled)
01: RUN-ON (Enabled (Disabled during stop))
02:
Alws-ON (Enabled (Enabled during stop))
00 
b096
Regenerative
braking function
ON level
200-V class: 330 to 380
*
400-V class: 660 to 760
*
(Inverter DC voltage)
200-V class:
360 V
400-V class:
720 V
V
t1 t2 t3
ON ON ON
100 s
Usage rate (%) =
(t1 + t2 + t3)
100 s
× 100
Regenerative
braking
function activated
Parameter No. Function name Data Default setting Unit
b092 Cooling fan control
00: Alws-ON (Always ON)
01: ON in RUN (ON during RUN)
Regardless of the settings, the cooling fan
operates for 5 minutes after power-on, and
for 5 minutes after the Inverter stops.
01 