Nortel Networks Option 11C Mini Manual Do Utilizador
Page 280 of 332
Chapter 19 — Connecting an external alarm
553-3021-209
Standard 3.00
April 2000
3
Use LD 15 and make the following changes.
Note: The following list only contains the prompts requiring a
response. Use a Carriage Return, <CR>, to accept the default values
for the other prompts.
response. Use a Carriage Return, <CR>, to accept the default values
for the other prompts.
a) Enter CHG in response to the REQ prompt.
b) Enter CDB in response to the TYPE prompt.
c)
Enter the customer number (0-99) in response to the CUST
prompt.
prompt.
d) Enter the DN of the line assigned as an alarm port in response to
the ALDN prompt.
Note: If the DN assigned to the alarm is accidentally called, the alarm
activates. To avoid false alarms, make sure the DN is not consistent
with the assigned numbering.
activates. To avoid false alarms, make sure the DN is not consistent
with the assigned numbering.
e)
Press return in response to the remaining prompts.
—————————— End of Procedure ——————————
Alarm through a QUA6 PFTU
A QUA6 PFTU can be used to connect an external alarm through normally
open or normally closed contacts of one of its units. The contacts operate
under the same conditions as the PFTU, and can support the capacities listed
in Table 76.
open or normally closed contacts of one of its units. The contacts operate
under the same conditions as the PFTU, and can support the capacities listed
in Table 76.
Table 76
AC capacities
AC capacities
Figure 70 on page 281 shows an example of the contacts on one unit (PFT1)
of the PFTU. Figure 70 shows the contacts in normal operating mode, not in
failure mode. Table 77 on page 282 provides the connections for all units on
the PFTU.
of the PFTU. Figure 70 shows the contacts in normal operating mode, not in
failure mode. Table 77 on page 282 provides the connections for all units on
the PFTU.
AC capacities
Maximum switching power
50.0 V A.
Maximum switching voltage
125.0 V rms
Maximum switching current
0.5 A