Omron MX2 Series User Manual page 402

7 Other Functions
Parameter
No.
Startup DC Injection Braking
A058
Time
DC Injection Braking Carrier
A059
Frequency
Multi-function Input S1 to S7
C001 to
C007
Selection
DC Injection Braking Carrier Frequency
The carrier frequency for DC injection braking can be set in the DC Injection Braking Carrier Frequency
(A059). Note, however, that setting a 5 kHz or higher frequency automatically applies a limit value to
the DC Injection Braking Power (A054).
The graph below shows the relationship between the carrier frequency and the limit value for the DC
injection braking power.
The value enclosed in parentheses ( ) on the graph represents the limit value at that carrier frequency.
Limit value for DC
injection braking power
[%]
Controlling DC Injection Braking via ON/OFF Status of External DC
Injection Braking Terminal
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 S1 to S7 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.
• DC injection braking works according to the ON/OFF status of the terminal DB, regardless of whether
the DC Injection Braking Selection (A051) is set to 00 (Disabled) or 01 (Enabled). Note that the DC
injection braking via the terminal DB has priority over the DC injection braking via the parameter set-
ting 01 (Enabled).
However, when A051 is set to 02, DC injection braking via the terminal DB is disabled.
• In the DC Injection Braking Power (A054), set the braking power required for your application.
Be aware that a limit value is automatically applied to the DC Injection Braking Power (A054) setting.
7 - 92
Function name
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.
Heavy load mode (b049 = 00): 2.0 to 15.0
Light load mode (b049 = 01): 2.0 to 10.0
07:
(100)
100
90
80
(75)
70
60
50
40
30
20
10
0 3 5 7 9 11 13 15
DC injection braking carrier frequency [kHz]
Multi-function Compact Inverter 3G3MX2-V1 User's Manual (I585-E1)
Data
DB (External DC injection braking)
(46)
(34)
(22)
(10)
Default
Unit
data
0.0 s
5.0/2.0 kHz
− −