Omron S8AS, Руководство пользователя

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Shared Parameter Settings
Section 4-6
4-6 Shared Parameter Settings
Setting the Undervoltage Detection Output Value: V-U (Voltage Under)
After setting the abnormal current tripping threshold and tripping type for all
branch outputs, press the Up (SEL) Key ( ) to go to the Undervoltage
Detection Threshold Display (V-U).
Note If the voltage remains below the detection threshold for 80 ms, the photo-
switch output for the Undervoltage Detection Output (LOW) will turn OFF. At
the same time, the seven-segment display will show the error code A21 and
the voltage value.
The alarm output can be cleared after the voltage rises above the threshold
+0.3 V for more than 500 ms.
Standard (
usu
) When the current exceeds the tripping threshold for more than 80
ms, the branch output is cut off and the Tripping Alarm Output (TRP)
is turned OFF. The output will be cut off within 100 ms.
Instantaneous (
ins
) When the current exceeds the tripping threshold for more than 10
ms, the branch output is cut off and the Tripping Alarm Output (TRP)
is turned OFF. The output will be cut off within 20 ms.
Extended (
lng
) When the current exceeds the tripping threshold for more than 980
ms, the branch output is cut off and the Tripping Alarm Output (TRP)
is turned OFF. The output will be cut off within 1,000 ms.
(Returns to V-U display.)
V - u
2 * 0
2 ! 5
1 2 3 4 5 6 V A Yrs s
°
C
1 2 3 4 5 6 V A Yrs s
°
C
1 2 3 4 5 6 V A Yrs s
°
C
This parameter sets the undervoltage detection threshold.
Press the Key to display the undervoltage detec-
tion's set value (SV).
The SV can be changed by pressing the and
Keys.
The setting range is 18.0 to 26.4 V (0.1-V increments).
• If the or Key is pressed for more than 2 s, the
SV will change in 1.0-V increments instead of 0.1-V
increments.
Change the SV with the and Keys.
The S8AS will automatically return to the V-U display if
no key is pressed within 3 s.
When the Key is pressed, the SV display will flash.
When the flashing stops, the new setting will be saved
and the S8AS will return to V-U display.
If you want to confirm the new setting, press the Key
again from the V-U display.
Switch to the
Maintenance
Forecast Moni-
tor Detection
Threshold Set-
ting (LFE).