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Functions
Panasonic ST4 Instruction Manual
72
EXAMPLE
Four units of
ST4-A
□
(address 1 to 4) are connected and only the muting input
indicators (orange) of the addresses 1, 3, and 4 light up:
Address 1
Address 3
Address 2
The muting input indicator
(orange) of address 2 also
lights up.
Error
removed
Address 4
Address 6
Address 5
Address 1
Address 3
Address 2
Address 4
Address 6
Address 5
ST4-A
□ at address 2 is in the state
“beam interrupted”, or the beam-axis
is misaligned, or the sensing surface
is dirty.
Temporary diagnosis in case of lockout
If an unknown error occurs while the sensor is in the lockout state, the error is indicated on the
fault display (red). You then can use the diagnosis function temporarily to find out where the
error occurred.
1.
2.
3.
Procedure
1. In case of lockout, turn off the power.
2. Turn ON the setting switch "SW5".
3. Turn on the power again.
The control output (OSSD 1/2) switches to OFF and " " is indicated on the fault display (red) to
conduct the diagnosis of ST4-A
□
.
After turning OFF the power, eliminate the error and set "SW5" to OFF. When turning on the
power again, the behavior of the sensor returns to normal operation and the diagnosis function
has been activated only temporarily to find the error (see "Troubleshooting" on page 79).
CAUTION
Turn off the power in order to eliminate the error display.
EXAMPLE
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