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Operation manual
6.4
LEDs of the G9SR-BC□-□
LEDs show the unit status and indicate errors.
An LED can be OFF
ON
FLASHING
Not applicable
6.4.1
POWER LED
Color: Green
ON when power supply is correctly applied to the unit.
OFF when no power is supplied IN1 LED = Input 1
Color: Yellow
ON when T12 receives a valid input signal.
OFF when no valid input signal is received at T12.
6.4.2
IN2 LED
Color: Yellow
ON when T22 receives a valid input signal.
OFF when no valid input signal is received at T22.
6.4.3
RESTART LED = Restart
Color: Yellow
ON when the Restart pushbutton is activated.
FLASH when an error occurs.
Fast blinking & ERR fast blinking = Communication error of another unit
Slow blinking & ERR slow blinking = Communication error of this unit
See also § 6.5.2Error situations - LEDs G9SR-BC□-□ on page 24
OFF when restart action is not required / not allowed.
shown as
shown as
shown as
shown as
= POWER
= Input 2
G9SR
Page 21 of 79
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