Operation
Operating Manual PSS u2 ES 4IOL
1004880-EN-01
27
Colour
State
Meaning
Red
}
Temperature error: Too hot (1)
and undervoltage
In addition to the module status
display, all the CQ terminal
status displays will also flash
}
Terminal error (e.g. device miss-
ing or wrong device)
In addition to the module status
display, the CQ terminal status
display for the affected terminal
will flash
(
1
) There are two levels of overtemperature.
}
Too warm:
If the module temperature exceeds a threshold value, then:
– a warning is sent to the head module.
If the temperature drops back below the threshold value, the module sends an all-clear.
}
Too hot:
If the module temperature exceeds another threshold value, then:
– an error message is sent to the head module
After the "too hot" message has been received, if the temperature drops back below the
"too warm" threshold value, the module will switch to an error-free state.
Terminal status display L+
n
(terminal 1, 5, 9, 13)
Colour
State
Meaning
- - -
24 V not present at terminal L+
Green
24 V present at terminal L+
