REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04
REF542
plus
: Installation and Commissioning
53 / 80
6.4.4 E-Key test
This test consists of the following steps:
The LCD display for the E-Key Test Page is shown in the following figure:
E L E C T R O N I C
K E Y
T E S T
I n s e r t
t h e
A B B
K e y
w i t h i n
5
s e c
↵
From RHMI
test page
To RHMI
test page
Figure 16:
E-Key Test Page
The so called ABB-key must be inserted within 5 seconds. Afterwards the test will end
with OK result. Otherwise, the result is FAIL.
6.4.5 Serial ports test
This test is performed by connecting the loop-back cable, cable that is normally used
for the connection between PC and HMI Local Control Unit,
between the port X20 and
the optical connector on the HMI front panel.
? ? ?
? ? ?
? ? ?
? ? ?
REF542 plus
Alarm
NetworkCommunication
Ready
100%
0
100%
0
100%
0
Menu
↵
↵↵
↵
Open
CB
M1
M2
M3
M2 V
Interlocking
Optical RS 232 to
half duplex RS 485
converter
S E R I A L
P O R T S
T E S T
P l e a s e ,
b e
s u r e
t h a t
t h e
t w o
s e r i a l
p o r t s
a r e
c o n n e c t e d
w i t h
t h e
l o o p b a c k
c a b l e
Figure 17:
RHMI serial ports test
