ABB SACE PR021/K

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 O
p
eratin
g
conditions
Descri
p
tion 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 O
p
eratin
g
conditions
Descri
p
tion of LEDs
Meaning