4-2 Function Mode •Perform each setting according to your system after setting DC injection braking method selection A056. 4 Functions „ Internal DC Injection Braking (A051: 01) •DC injection braking is applied without terminal operation at start/stop of the Inverter. To use internal DC injection braking, set DC injection braking selection A051 to 01. •Set the startup DC injection braking power in A057. In A058, set the startup DC injection braking time, regardless of the edge or level operation. (Example 4-a), (Example 4-b) •Set DC injection braking power A054 to define the braking power other than at startup.
•Set the DC injection braking starting frequency in DC injection braking frequency A052. •Once DC injection braking delay time A053 is set, the Inverter stops output when the frequency reaches the A052 value after the RUN command (FW) has been turned off. During the set time in A053, the motor remains in free-run status. After the set time in A053, DC injection braking starts. •Edge and Level operations for internal DC injection braking work differently when the RUN command switches from STOP to RUN. 4-26 (a) Edge operation (A056: 00) (b) Level operation (A056:
01) (Example 1-a) FW DB Output frequency A055 (Example 1-b) FW DB Output frequency (Example 2-a) FW DB Output frequency A055 (Example 2-b) FW DB Output frequency (Example 3-a) FW DB Output Free running frequency A053 A055 (Example 3-b) FW DB Free running Output frequency A053 FW DB Output frequency A055 A055 FW DB Output frequency FW DB Output frequency A055 A055 FW DB Output frequency FW DB Output Free running frequency A053 A055 Free running A053 A055 FW DB Free running Output frequency A053 Free running A053