Omron 3G3JX - Page 19

16 JX Quick Start Guide
PROGRAMMING JX
ter A053, during which the motor will free run. If free-run is selected as stopping method the DC injection braking will start
just when the Run commands turns OFF.
• DC injection braking by frequency detection can be selected setting A051 to “02” (Frequency control). In this case DC injec-
tion braking operates when the output frequency comes down to the one you specified in A052 while the RUN command is
still active. External DB and internal DC injection braking are invalid during the frequency detection mode.
• Last option is to trigger the DC injection by a digital input when the terminal (DB) is turned ON. Set parameters A053 and
A054 to setup this function. There are several cases depending on the motor rotation and Run command status.
Parameter Parameter name Description
A051 DC injection braking selection 00: Disabled
01: Enabled
02: Frequency control [A052 set value]
A052 DC injection braking frequency 0.0 to 60.0 Hz
ON
F-SET
DB
DC Brake at stop
F-OUT
FW
A053 A055
A053
A052
FW
ON
F-SET
DB
Eample 1: Step change in F-SET
F-OUT
FW
ON
F-SET
Example 2: Analog change in F-SET
F-OUT
DB DB DB
A052
[FW,RV]
1
0
[DB]
1
0
F-OUT
FW or RV DI are ON
t
1
0
1
0
t
1
0
1
0
t
delay
Run from operator
Run from operator with delay
A053