7 - 91
7 Other Functions
Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
7-9 DC
Inject
ion
Braking
Fu
nct
ion
7
7-9
-1 DC
Injection Braking (DB)
7-9
DC Injection Braking Function
This section describes the DC injection braking function.
Use this function to have the motor apply DC injection braking according to the load.
For an induction motor, this function allows braking with no feedback of regenerated energy to the
inverter.
However, for a PM motor, consider to take measures against overvoltage because even the DC injec-
tion braking function allows regenerated energy to be fed back to the inverter.
DC injection braking can be controlled with one of the following three methods:
• Setting the Multi-function Input S1 to S7 Selection (C001 to C007) to 07 (DB: External DC injec-
tion braking) and turning ON/OFF the terminal to which the external DC injection braking function
is allocated.
• Setting the DC Injection Braking Selection (A051) to 01 (Enabled) and then setting appropriate
function parameters.
• Setting the DC Injection Braking Selection (A051) to 02 (Enabled) and controlling the motor only
by comparison via the frequency set in the DC Injection Braking Frequency parameter.
Note, however that the use of DC injection braking may not cause the motor to stop due to the moment
of inertia of the motor load.
7-9-1
DC Injection Braking (DB)
Parameter
No.
Function name
Data
Default
data
Unit
A051
DC Injection Braking Selection
00:
Disabled
00
−
01:
Enabled
02:
Enabled
(Operates only via set frequency)
A052
DC Injection Braking Frequency
0.00 to 60.00
Set the frequency at which you want to
start DC injection braking to stop the
motor rotation, when the DC injection
braking function is enabled.
0.50
Hz
A053
DC Injection Braking Delay
Time
0.0 to 5.0
Set the delay time until the motor starts
applying DC injection braking after the set
DC Injection Braking Frequency is
reached, or after the terminal DB turns ON.
0.0
s
A054
DC Injection Braking Power
Heavy load mode (b049 = 00): 0. to 100.
50.
%
Light load mode (b049 = 01): 0. to 70.
A057
Startup DC Injection Braking
Power
0. (Weakest: Zero current) to 100.
(Strongest: Rated current)
0.
%
A055
DC Injection Braking Time
0.0 to 60.0
Set the time during which DC injection
braking is applied after deceleration stop.
Setting this time is effective when the
terminal DB performs edge operation.
0.5
s
A056
DC Injection Braking Edge/Level
Selection
00:
Edge operation (Examples 1
−
a to 6
−
a)
01
−
01:
Level operation (Examples 1
−
b to 6
−
b)
Summary of Contents for SYSDRIVE MX2 SERIES
Page 1: ...Multi function Compact Inverter MX2 Series Type V1 User s Manual I585 E1 01 3G3MX2 A V1 ...
Page 32: ...CONTENTS 29 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 108: ...2 Design 2 48 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 176: ...4 Parameter List 4 42 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 538: ...10 Troubleshooting 10 22 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 598: ...12 Options 12 50 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 614: ...Appendices A 16 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 ...
Page 615: ...I 1 Multi function Compact Inverter 3G3MX2 V1 User s Manual I585 E1 I Index ...