Omron M1 Series User Manual page 254

6 Basic Settings
If the JG terminal is turned ON again with the motor in a free-run state (JG terminal OFF and FW
terminal ON), jogging operation is started again.
If the FW terminal is turned OFF with the motor in a free-run state (JG terminal OFF and FW termi-
nal ON), and the FW terminal is turned ON again, normal operation is performed.
 Relationship with DC braking
When the jogging function is used to perform inching, the inverter sometimes does not come to an
exact stop in applications such as turntables and rotates an extra bit more before it comes to a
stop.
In vector control, the braking torque just before the stop can be adjusted so that the inverter comes
to an exact stop by adjusting the speed adjuster (ASR). However, in V/f control, sufficient braking
torque sometimes cannot be ensured simply by adjusting the torque boost.
In cases like these, jogging operation and the DC braking function are used in combination to ad-
just inching.
For details on DC braking, refer to 8-5-1 DC Injection Braking (DB) on page 8-55.
Operation when the RUN command is turned OFF during jog operation with the DB (DC braking)
terminal turned ON is as follows.
(Example: When External DC Injection Braking Edge/Level Selection (301FHex-10Hex) = "1: Level
operation")
• When Jogging Operation Selection (301FHex-0CHex) = 0, 3, operation immediately becomes
free run when the RUN command turns OFF, and immediately DC braking by the DB terminal
operates.
• When Jogging Operation Selection (301FHex-0CHex) = 1, 2, 4, 5, DC braking by the DB terminal
operates immediately when the RUN command turns OFF.
 Forward Rotation Jogging/Reverse Rotation Jogging
• When the FJOG (Forward rotation jogging) terminal or RJOG (Reverse rotation jogging) terminal
is turned ON when the RUN command is OFF, forward rotation or reverse rotation jogging opera-
tion can be performed. Deceleration stop is performed according to the acceleration/deceleration
time regardless of Jogging Operation Selection (301FHex-0CHex).
Fig.: Jogging operation by FJOG and RJOG terminals during an operation stop
6-56
FJOG
RJOG
FW
RV
3006Hex-
Output frequency 15Hex
3008Hex-
3008Hex-37Hex 38Hex
3008Hex-37Hex
-3006Hex-15Hex
Mode
Normal JG Normal
FJOG, RJOG operation
3006Hex-
15Hex
3008Hex-37Hex 3008Hex-38Hex
3008Hex-
3008Hex-37Hex
3008Hex-38Hex
38Hex
-3006Hex-
15Hex
JG Normal JG Normal
M1 Series EtherCAT Type User's Manual (I670)