REF 542plus switchbay protection and control unit
Manual Part 3: Installation and Commissioning
1VTA100004-en DMS,2001-10-04
REF542
plus
: Installation and Commissioning
44 / 80
6.3.2.1 RAM test
Press “
r
”
2 Mbyte RAM is being tested
Test result is shown on the terminal
Figure 11:
Display of the result after RAM test
6.3.2.2 Program flash memory test
Press “
p
”
16 Mbit flash is being tested. This test will destroy the actual application firmware on
the program flash. Application firmware must be downloaded afterwards by “
d
” com-
mand.
Test result is shown on the terminal.
6.3.2.3 Configuration flash memory test
Press “
c
”
16 Mbit flash is being tested. This test will destroy the actual configuration (if any) on
the data flash.
Test result is shown on the terminal
6.3.3 Calibration of the Analog Input
The calibration of the REF542plus is normally not necessary, because the related
calibration data are stored in the memory of the analog input board itself. But if e.g.
one of the CT or VT on the analog input board is removed or substituted, a re-
calibration has to be done. For this reason the so called factory test mode must be
entered by typing
f
after entering the self test mode. After some seconds, a menu
with possible operations is shown on the PC terminal.The following commands are
available:
