3G3MX-A2015 Omron, 3G3MX-A2015 Datasheet - Page 52
![AC Motor Drive](/photos/21/34/213420/4601786_sml.jpg)
3G3MX-A2015
Manufacturer Part Number
3G3MX-A2015
Description
AC Motor Drive
Manufacturer
Omron
Datasheet
1.3G3JX-A2004.pdf
(57 pages)
Specifications of 3G3MX-A2015
No. Of Phases
Three
Power Rating
1500W
Output Voltage Max
240V
Output Frequency Max
400Hz
Mounting Type
DIN Rail
Output Voltage Min
200V
External Height
130mm
Supply Voltage Min
200V
External Width
110mm
Supply Voltage Range
200VAC To 240VAC
Frequency Range
0.5 To 400Hz
Rohs Compliant
Yes
External Depth
166mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Overview of Braking Resistor Selection
■ Applications Requiring Braking Resistors
In applications where excessive regenerative motor energy is
produced during deceleration or descent, the main-circuit volt-
age in the Inverter may rise high enough to damage the Inverter.
Standard Inverters are equipped with an overvoltage protection
function so the main-circuit overvoltage (OV) is detected and
operation is stopped to prevent damage. Although the Inverter
will be protected, the overvoltage protection function will gener-
ate an error and the motor will stop; this system configuration will
not provide stable continuous operation.
● About Regenerative Energy
The load connected to the motor has kinetic energy if it is rotat-
ing or potential energy if it is at a high level. The kinetic or poten-
tial energy is returned to the Inverter when the motor decelerates
or lowers the load. This phenomenon is known as regeneration
and the returned energy is called regenerative energy.
● Avoiding the Use of a Braking Resistor
The following methods can be used to avoid having to connect a
Braking Resistor. These methods require the deceleration time
to be extended, so you must evaluate whether extending the
deceleration time will cause any problems in the application.
60
• Enable the "stall prevention during deceleration" function; the
• Set a longer deceleration time. (This reduces the rate at which
• Select "coast to stop" as the stopping method. (Regenerative
Overview of Inverter Selection
default setting for this function is enabled. (The deceleration
time is extended automatically to prevent main-circuit overvolt-
age from occurring.)
the regenerative energy is produced.)
energy will not be returned to the Inverter.)
Inverter
Regenerative
energy
Overview of Inverter Selection
Motor
During deceleration, the Inverter acts as
a generator and converts kinetic and
potential energy to regenerative energy.
Load
Kinetic energy
Potential energy
■ Simple Method for Braking Resistor Selection
This is a simple method for determining the braking resistance
from the percentage of time that regenerative energy is produced
during a normal operating pattern.
t: Deceleration time (regenerative time)
T: Time for 1 cycle of operation
Use rate (duty) = t/T x 100 (%ED)
T
t