Alcatel 9400 UX, User Manual

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3CC08991ATAA TQ BJA 01 Issue 01 -- March 2004
2.4
--
Alarms, telesignalling and remote controls (TS/TC)
The equipment has:
-- Three loops, respectively preassigned for “Urgent alarm” (URG), “Non-urgent alarm” (NURG) and
“Attended” (ATT) states. Each alarm or event generated by the equipment can be classified as Urgent,
Not Urgent, Inhibited or Status by the supervisory software (§ 4.5.5).
-- A remote control loop, available to the user.
The three contacts of this loop (common, N/C and N/O) are accessible:
S
on the “ALARM. I/O” connector of the main classic IDU,
S
on the “ESC 3/ALARM I/O” connector of the Light IDU,
The loop formed by the common and normally closed contacts is normally closed (in the
absence of an alarm condition or remote control).
-- eight housekeeping alarms (remote indications via dry loops), available to the user. The remote
indication loops are configured as normally open and can be configured as normally closed, depending
on the setting of the swaps on the MCU board, as described in § 7.10.1. A name can be assigned to
each loop, in the software, on installation. These loops are available:
S
on the “ALARM. I/O” connector of the main classic IDU,
S
on the “ESC 3/ALARM I/O” connector of the Light IDU unit,
Figure 15 - Remote control, alarms and remote indications
EQUIPMENT
EQUIPMENT
Normally open
Common
Normally closed
Housekeeping loop,
normally open (in the
absence of an alarm condition)
REMOTE CONTROL
AND ALARMS
REMOTE INDICATIONS
Housekeeping loop
normally closed (in the
absence of an alarm)
CHOICE
0.5 A / 100 V
dry loops
Relay position in the
absence of an alarm
condition or remote
control
2.5
--
Loopback options
The loopback options are provided on the active channel to facilitate commissioning and maintenance
operations. Figure 16 shows the positioning of the loops according to the configuration.
Each local loop loops the aggregate:
-- at the output of the main IDU
➝
, and the extension IDU
➢
,
-- at the input of the main ODU
©
and the extension ODU
➠
, to check the cable link between the IDU
and the ODU (this command cuts off output power),
-- at the output of the main ODU
➟
and the extension ODU
➡
if the RF loopback option has been
selected (the RF loop cuts transmission).
!
CAUTION:
S
A local loop disconnects the link and isolates it from the network.
S
The RF loopback configuration requires the remote transmitter to be cut off by re-
mote control.