Omron H3DS Series - Operation - H3 DS-G; Basic Operation

H3DS-G
H3DS-G
25
I/O Functions
Inputs ---
Outputs Control output Star output is turned OFF when the dial set value is reached and delta output is ON
after the preset transfer time elapses
Basic Operation
Setting of Selector
The selectors can be turned clockwise and counterclockwise to se -
lect
the desired time scale, or operating mode.
Each selector has a snap mechanism that secures the selector at a
given position. Set the selector at a position at which it is secured.
Do not set it midway between two securing positions or a malfunc -
tion
could result from improper setting.
Selection of T ime Unit and T ime Scale
The star-delta transfer time and star operation time scale are set
with the same selector. The star-delta transfer time can be set to
0.05,
0.1, 0.5, or 1. The star operation time scale can be set to a mul -
tiplication
factor of 1 or 10. If the star-delta transfer time is displayed
in the display window in white letters, this means that the star opera -
tion
time scale is “x10”. Refer to the example below .
Star-delta transfer time Star operation time scale
0.05 s
0.1 s
x1
0.5 s
x1
1 s
0.05 s
0.1 s
x10
0.5 s
x10
1 s
Star-delta transfer time and
star operation time scale
display window and selector
Time Setting
The star operation time of the T imer is set with the time setting dial.
Locking/Unlocking of Selectors and T ime Setting Dial
The time setting dial and time scale selector can be locked using the
Y92S-38 Lock Key , a special pen type tool that is sold separately . T o
lock
the dial or selectors, insert the Lock Key in the keyhole to the
lower right of the dial or selector and turn it clockwise until the dial or
selector is completely covered with the red cover . T o unlock, turn the
Lock Key in the opposite direction.
Key hole
Timing Charts
Power (A
1
and A
2
)
Star contact
17 and 18
(star indicator)
Delta contact
27 and 28
(delta indicator)
t
1
: Star operation time setting
t
2
: Star-delta transfer time
ON
OFF
0.5 s
ON
OFF
ON
OFF
t
2
t
1
Note: The reset time requires a maximum of 0.5 s.