Mitsubishi Electric ME96SSEB-MB, Руководство пользователя

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4. How to Use Test Mode
Test Menu 2 to 5: No Test Menu
This test menu is not displayed because there is no corresponding function in this model.
Test Menu 6: Functions for Determining Incorrect Wiring
In the test mode, the following operation is available.
Set the test menu number to 6.
*Refer to the right figure.
Test Menu
When either a voltage input or a current input is incorrectly wired, this function
automatically determines incorrect wiring and the incorrect part is displayed on the
screen. After checking it, press to return to the test menu.
*1. For 1-phase 3-wire system, the PN terminal is displayed as
‘P2’ on the screen. Read as ‘PN.’
■
Select a power factor condition (For 3-phase 3-wire system)
For 3-phase 3-wire system, the following screen may be displayed to select a power factor
condition depending on the incorrect wiring situation.
With or , select the power factor condition and then press .
When the settings are determined, the incorrect wiring part is displayed on the screen.
Note: Select a power factor condition by referring to the following points:
・
Power factor: LAG
➝
Power factor is lagging for load of inductive machines.
Assume 1 to lag 0.5.
・
Power factor: Around 1
➝
Power factor is around 1 due to resistance load or power
factor improvement. Assume lead 0.866 to lag 0.866.
・
Power factor: LEAD
➝
Power factor is leading for capacitor panel.
Assume lead 0 to 1.
*If the Err display appears at the bottom line of the LCD, press and then select
the power factor condition again.
■
Check multiple alternatives
(For 3-phase 3-wire/1-phase 3-wire/1-phase 2-wire system)
There may be multiple patterns of incorrect wiring depending on the incorrect wiring
situation. For the above three systems, press to switch the screen and check the
incorrect wiring patterns.
■
There are multiple incorrect wiring parts (For 3-phase 4-wire system)
For this phase wire system, multiple incorrect wiring parts of voltage or those of current
are detected and displayed on each screen.
Continued to the next page.
①
Pattern display of
incorrect wiring
Example of correct wiring
SET DISPLAY
＋
＋
DISPLAY
－ SET
－
Example of incorrect wiring:
Reverse connection of 1 side CT
The incorrect wiring part blinks.
*1
The correct one is ON.
The number of incorrect
wiring pattern appears.
*For details on the pattern,
refer to 4.3.1 .
Power factor: LAG
Power factor: Around 1
Power factor: LEAD
＋ ＋
－
－
SET
Example of voltage
Example of current
DISPLAY
DISPLAY
DISPLAY
Display the first
pattern in the three
patterns