Hitachi SJ Series, User Manual

Page: 365 / 786

12-17-4
Chapter 12 Inverter Functions
12.17.3 Jogging/Inching Operation
• How to drive a motor gradually.
• How to perform an inching operation.
• This function allows you to fine-tune the position
where a motor stops.
Parameters
• The jogging operation is likely to trip due to its
direct-on operation. Adjust the setting value for the
jogging frequency [AG-20] so that the inverter does
not trip.
• For the jogging operation, set the [AA111] operation
command selection to 00, turn on the 029[JG]
terminal and then put the [FW]/[RV] terminal. The
operation is not allowed with the [JG] terminal
alone.
• When [AG-21] = 00, 03 for the free-running at the
time of the stop, the operation settings for
free-running is required.
• When [AG-21] = 02, 05 for the DC-braking at the
time of the stop, the settings for the DC-braking
function is required. Refer to "12.15 Changing the
Stop Mode" respectively.
Item Parameter Data Description
Jogging frequency [AG-20]
Lowest frequency - 10.00
(Hz)
Frequency command at the time of the
jogging operation command.
Selecting the jogging
stop
[AG-21]
00
Invalid while operating Free-running at
the time of the stop.
01
Invalid while operating Decelerating
stop at the time of the stop.
02
Invalid while operating DC braking at
the time of the stop.
03
Valid while operating Free-running at
the time of the stop.
04
Valid while operating Decelerating stop
at the time of the stop.
05
Valid while operating DC braking at the
time of the stop.
Input terminal
function
[CA-01]~[CA-11] 029
When the [JG] terminal function is
turned on, the jogging behavior occurs
at the time of operation.
(Example 1)
When the setting for the jogging selection
[AG-21] is 00, 01 or 02, the jogging behavior
does not occur if the [FW] signal is turned on
first.
(Example 2)
When the setting for [AG-21] is 03, 04 or 05, the
jogging behavior occurs if the [FW] signal is turned
on first. However, if the [JG] signal is turned off
first, the free-running stop occurs.
Q
A
!
JG
FW
RV
Output
frequency [AG-20]
Output
frequency
[FW]
[JG]
Free-running
Normal
operation
In deceleration
Jogging operation
Output
frequency
[FW]
[JG]
After the free-running is released, acceleration occurs according to the
settings for restart [bb-57].