Installation guide

- 6 -
LED Indicators
The front panel of the PT switch contains several LED
indicators. The function of each LED is described in the table
below.
LED Color State Description
System LEDs
STAT
GREEN
On
System has passed self-diagnosis test
on boot-up and is ready to run.
Blinking
System is undergoing the
self-diagnosis test.
RED On
System failed self-diagnosis on
boot-up.
PWR1 AMBER
On
Power is being supplied to the main
module’s power input PWR1.
Off
Power is not being supplied to the
main module’s power input PWR1.
PWR2 AMBER
On
Power is being supplied to the main
module’s power input PWR2.
Off
Power is not being supplied to the
main module’s power input PWR2.
FAULT RED
On
The corresponding PORT alarm is
enabled and a user-configured event
has been triggered.
Off
The corresponding PORT alarm is
enabled and a user-configured event
has not been triggered, or the
corresponding PORT alarm is
disabled.
MSTR/HEAD GREEN
On
This PT switch is set as the Master
of the Turbo Ring, or as the Head of
the Turbo Chain.
Blinking
The PT switch has become the Ring
Master of the Turbo Ring, or the
Head of the Turbo Chain, after the
Turbo Ring or the Turbo Chain went
down.
Off
The PT switch is not the Master of
this Turbo Ring or is set as a
Member of the Turbo Chain.
CPLR/TAIL GREEN
On
When this PT switch is enabled to
form a back-up path, or it is set as
the Tail of the Turbo Chain.
Blinking
Turbo Chain is down.
Off
This PT switch disabled the coupling
function, or is set as a Member of the
Turbo Chain.
Mode LEDs
LNK/ACT GREEN On
The corresponding module