Page 32 of 91
Rev. 4.20
6.1.4 Loop start/restore procedure
The menu “
Loop start/restore
” schedules two procedures of loop
starting or resetting and the possibility to place the loop itself out of service
(necessary operation in case of maintenance). Starting or resetting
procedures of the loop depends on the characteristic of the line:
“
LOOP RESTART
”: to select when isolator along the loop with address 0 are
not present;
“
INST.ISOLAT.
”: to select if isolators along the loop with
address 0 are present. In the case they are installed
with address beginning from 121. should there be
some addressed isolators, they will have to be taken
back first to address 0;
“
OUT OF SERVICE
”: to select in case of maintenance of the loop or the
installed points.
6.1.5 Information
Once the loop resetting or starting procedure has been selected and has
been confirmed with “
Sel.
”, the control panel starts the loop control,
scanning from point a (control panel starting) to the first possible isolator
(point 121-127) and in succession among isolators, as far as point B (control
panel arrival). Afterwards it will scan the loop inversely from point B to point
A. after the control, loop is activated. After the operation is ended, the
control panel passes to the confirmation menu.
6.1.6 Confirmation
After loop resetting or starting operation is completed, the message
“
COMPLETED OPERATION
” is read on the display. Confirm with key “
Ok
” to
complete the loop resetting or starting.
6.2 LOOP OUT OF SERVICE
6.2.1 Loop start/restore procedure
If the user wants to put a loop or all loops in out of service, the user must
access to “
Loop start/restore
” menu and to select “
OUT OF
SERVICE
”. To access at this menu see chapter
6.1.1t until
6.1.3.
The loop in out of service has 0V on the cables.
Loop start/restore
•LOOP RESTART
INST.ISOLAT.
OUT OF SERVICE
Sel. Canc
Information
•OPER.: START
LOOP: 1
STEP: LOOP DISCHARG.
DIRECTION: A->B
Information
COMPLETED OPERATION
Ok
.
Loop start/restore
LOOP RESTART
INST.ISOLAT.
•OUT OF SERVICE
Sel. Canc