Using the demonstration board
UM0583
14/23
●
To operate the STCC08 board correctly and at each test, perform the following
procedure first:
–
Place the “STCC08 CNTRL” switch (SW5) to the “OFF” position
–
Set the “N DIODE MODE (SW2)” and “P DIODE MODE (SW3)” switches to the
“NO” position
–
Put the “OPEN LOAD” (SW1) switch in the “NO” position
–
Set the “OPEN ACS” (SW4) switch to the “NO” position
–
Connect the AC mains wire to the AC line connector (J1).
–
In this case, all LEDs must be off
●
To turn on the AC switch:
–
Place all mechanical switches (SW1, SW2, SW3 and SW4) in the “NO” position
–
Put the “STCC08 CNTRL” switch (SW5) in the “ON” position
–
The “STCC08 CNTRL” LED (D5) and the “ON” LED (D9) must be on
–
The light bulb must be on
●
To simulate a diode mode of the ACS:
–
Set the “N DIODE MODE” (SW2) or “P DIODE MODE” (SW3) switch to the “YES”
position, SW1and SW4 to the “NO” position and SW5 to the “OFF” position
–
In this case, the “DIODE” (D6) LED is on
●
To simulate a short-circuit of the ACS:
–
Put the “N DIODE MODE” (SW2) and “P DIODE MODE” (SW3) switches in the
“YES” position, SW1and SW4 in the “NO” position and SW5 in the “OFF” position
–
In this case, the “CC” LED (D8) is on
●
To simulate an open circuit of the ACS:
–
Place the “STCC08 CNTRL” switch (SW5) in the “ON” position and all mechanical
switches (SW1, SW2, SW3 and SW4) in the “NO” position
–
Put the “OPEN ACS” (SW4) switch in the “ON” position
–
In this case, the “OPEN” LED (D7) and “STCC08 CNTRL” LED (D9) is on
●
To simulate AC switch failures in any AC load state:
–
Place the “OPEN LOAD” (SW1) switch in the “YES” position (this disconnects the
AC load) and use the previous procedures to see the AC switch (ACS) state is
detected whatever the AC load state (AC load connected or disconnected)
●
Read the “AVF” test point (TP8) with an oscilloscope connected through an insulated
plug (see example in
Figure 9
,
10
and
11
).
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