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Test Mode Section 5-1
5-1 Test Mode
Each branch output's connection status can be checked and the outputs can
be connected manually in Test Mode before starting actual operation of the
equipment.
The S8AS must be set to protection level 0 or 1 in order to switch to Test
Mode. (It is not possible to switch to Test Mode when the S8AS is set to pro-
tection level 2.)
Precautions when
Checking Operation
Before checking operation in Test Mode, always confirm that it is safe to do so
and will not adversely affect the system.
Setting the Branch
Outputs That Will Be
Used
The S8AS is a power supply unit. When it is shipped from the factory, all
branch outputs are set to “ON” (connected). After setting the parameters in
Setting Mode, change the connection status as required and then check
them.
Errors Occurring
During the
Connection Test
When an error occurs in Test Mode or the external tripping input is turned ON,
the tripping operation will be executed and the appropriate external output will
be turned OFF, but the error code will not be displayed.
When the S8AS is switched to Run Mode, the error code will be displayed.
In Test Mode, the abnormal tripping output (TRP) will operate if one or more of
the branch outputs are not connected. (The photoswitch outputs will turn
OFF.) No error code will be output. This type of TRP output is unique to the
Test Mode and will not be retained if the operating mode is changed.
Switching to Test
Mode
Press the Key and the Key together for at least 3 s to switch to the
Mode Selection Menu and select Test Mode.
Once the S8AS has been switched to Run Mode, it will start in either Run
Mode or Test Mode (see note) the next time that the power is turned ON, so
press the and the Keys together for at least 3 s to switch to the Mode
Selection Menu.
Note When the S8AS is turned OFF in Test Mode, it will restart in Test
Mode.
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