Omron MX2 Series User Manual

7 Other Functions
7 - 95
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
Parameter
No.
Function name
Data
Default
data
Unit
A058
Startup DC Injection Braking
Time
0.0 to 60.0
Set the time during which DC injection
braking is applied when the RUN com-
mand is ON, when the DC injection
braking function is enabled.
0.0
s
b083
Carrier Frequency
Heavy load mode (b049 = 00): 2.0 to
15.0
Light load mode (b049 = 01): 2.0 to 10.0
10.0/2.0
(5.0)
*1
kHz
C001 to
C007
Multi-function Input 1 to 7
Selection
07: DB (External DC injection braking)
−
−
*1. In high-frequency mode.
The braking power for DC injection braking can be set in the DC Injection Braking Power (A054). Note,
however, that setting this to exceed 10% automatically applies a limit to the carrier frequency.
The graph below shows the relationship between the DC injection braking power and the limit value for
the carrier frequency.
The value enclosed in parentheses ( ) on the graph represents the limit value for the carrier frequency.
When the value of Carrier Frequency (b083) is greater than the limit, the inverter operates at the carrier
frequency.
• If the DC injection braking power is equal to or less than 10%, the maximum carrier frequency value
is limited to 15 Hz.
• If the DC injection braking power is greater than 10% and equal to or less than 50%, the maximum
carrier frequency value is limited to 5 Hz.
• If the DC injection braking power is greater than 50%, the maximum carrier frequency value is limited
to 2 Hz.
15
12
Limit
value for
carrier
9
frequency
(kHz)
7
5
3
2
0
10 20 30 40 50 60 70 80 90 100
Braking power (kHz)
Use this method to control DC injection braking according to the ON/OFF status of the external DC
injection braking signal allocated to the multi-function input terminal.
Allocate the Multi-function Input 1 to 7 Selection (C001 to C007) to 07 (DB: External DC injection
braking).
When the terminal DB turns ON, DC injection braking is applied independently of the RUN command
operation.
Controlling DC Injection Braking via ON/OFF Status of External DC
Injection Braking Terminal
11
Carrier Frequency for DC Injection Braking

Omron MX2 Series Specifications

General

Cooling Method	Fan cooling
Output Frequency Range	0.1 to 400 Hz
Control Method	V/f control, Sensorless vector control
Protection Functions	Overcurrent, overvoltage, undervoltage, overload, overheating, short circuit
Communication Options	Modbus RTU
Overload Capacity	150% for 60 seconds
Braking Unit	Built-in
Ambient Operating Temperature	-10°C to +50°C
Enclosure	IP20
Storage Temperature	-20°C to +65°C
Humidity	5 to 95% RH (non-condensing)
Altitude	Up to 1000m
Power Supply Voltage	200-240V AC
Input Voltage	3-phase 200-240V AC