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Inputting the DC Injection Brake Command from Control Circuit Terminals
If you set a multi-function contact input terminal (H1-
apply the DC injection brake to the motor by turning on the terminal for which the DC injection brake com-
mand has been set when the Matrix converter is being stopped. DC injection braking is used at startup for flux
vector control.
The time chart for the DC injection brake is shown below.
DC injection brake command
FRUN
Output frequency
If you input the DC injection brake command from an external terminal, or if the Run Com-
mand and jog command are input, the DC injection brake will be disabled, and operation will
resume.
Changing the DC Injection Brake Current Using an Analog Input
If you set H3-05 (Multi-function Analog Input Terminal AI2 Function Selection), H3-09 (Multi-function Ana-
log Input Terminal AI3 Function Selection), or H3-13 (Multi-function Analog Input Terminal AI4 Function
Selection) to 6 (DC injection brake current), you can change the DC injection brake current level using the
analog input.
At 10 V input (voltage) or 20 mA input (current), 100% of the Matrix converter rated current will be applied.
Fig 6.7 DC Injection Brake Current Using an Analog Input
Using an Emergency Stop
Set a multi-function input terminal (H1-
emergency stop with an NO contact, set the multi-function input terminal (H1-
emergency stop with an NC contact, set the multi-function input terminal (H1-
DC injection brake
E1-09
(DC injection braking at
startup is used for flux
vector control.)
Fig 6.6 DC Injection Brake Time Chart
DC injection brake voltage level
Inverter rated current
) to 6F or 70 (emergency stop) to coast to a stop. If inputting the
) to 60 (DC injection brake command), you can
DC injection brake
b2-01
(DC injection braking at
startup is used for flux
vector control.)
) to 6F, and if inputting the
) to 70.
Stopping Methods
9
6-
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Troubleshooting
