Regenerative Braking Function; Cooling Fan Control - Omron SYSDRIVE RX Series User Manual

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.
Parameter No. Function name
Usage rate of
b090 regenerative
braking function
Regenerative
b095 braking function
operation selection
Regenerative
b096 braking function
ON level
* 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.
Parameter No. Function name
b092 Cooling fan control
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.
Data
0.0: Does not operate.
0.1 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.
t1 t2
ON ON
Regenerative
braking
100 s
function activated
(t1 + t2 + t3)
Usage rate (%) =
100 s
00: Disabled (This function is not active.)
01: Enabled during operation (This function is
active.)
Disabled during stop (This function is not active.)
02: Enabled during both operation and stop (This
function is active.)
*
200-V class: 330 to 380
*
400-V class: 660 to 760
(Inverter DC voltage)
Data
00: Always ON
01: 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.
4-2 Function Mode
Default setting
t3
0.0
ON
× 100
0.0
200-V class:
360 V
400-V class:
720 V
Default setting
01
Unit
4
%
⎯
V
Unit
⎯
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