L3016
1SDH000559R0002
8/52
ABB SACE
SACE PR021/K
Description of events signalled by the LEDs
PW/WD
and
TX/RX
Caption:
XX = don’t care
BLINK = Flashing synchronized with activity of the local bus
(the LED is on for 1 ms for each message received or transmitted)
R/V 2Hz = intermittent red/green lighting at 2Hz.
(*) Each flash is equivalent to relevant LED lighting for 200 ms, with a repetition period of 2s. The following priorities are
introduced to handle cases in which more than one signal is active:
3.1.
Using the push-buttons
•
Reset:
Press to reset the PR021/K hardware.
3.2.
Optical signals
Description of events signalled by the LEDs
K51/1...K51/8
Off
On
Flashing
K51/1
(green)
Contact K51/1 open
Contact K51/1 closed
--
K51/2
(green)
Contact K51/2 open
Contact K51/2 closed
--
K51/3
(green)
Contact K51/3 open
Contact K51/3 closed
--
K51/4
(green)
Contact K51/4 open
Contact K51/4 closed
--
K51/5
(green)
Contact K51/5 open
Contact K51/5 closed
--
K51/6
(green)
Contact K51/6 open
Contact K51/6 closed
--
K51/7
(green)
Contact K51/7 open
Contact K51/7 closed
--
K51/8
(green)
Contact K51/8 open
Contact K51/8 closed
--
PR021/K Operating conditions
Description of LEDs
LED state
PW/WD
TX/RX
GREEN
OFF
If PR021/K is Slave then there is no communication
GREEN
ON
Not contemplated
GREEN
4 flashes (*)
Bus KO
GREEN
3 flashes (*)
Failure to identify
the protection unit
GREEN
2 flashes (*)
Indicates that the Dip-switch
K51 Dis/En
is in the ON position
GREEN
1 flash (*)
Indicates that the Dip-switch
TEST Dis/En
is in the ON position
GREEN
BLINK
Operating mode
RED
XX
WD hardware error
R/V 2Hz
OFF
Programming Mode
R/V 2Hz
ON
Programming successfully completed
R/V 2Hz
2Hz flashing
Programming failed
OFF
OFF
Unit off
OFF
ON
Not contemplated
PR021/K Operating conditions
Description of LEDs
Meaning