Nortel Meridian 1 Manual page 123

Figure 51 shows detail view of the PFTU alarm connections. The PFTU can
be activated by system power failure and using the Attendant console TC
switch. If more than one Attendant console is connected to the system, it must
be connected in parallel with the main Attendant console as shown in the
figure.
Figure 51
Typical PFTU connection to the MDF and the Master System Monitor
DEES 154
PFTU
– 48V
NC1
Open
when
activated
NC
GND
SWE
To
activate
power fail
transfer
NO1
Closed when
NO
activated
Additional
TC
attendant
consoles
Attendant console
GND
NPS
COM
50220-07
Power Supply – 48 V
P1–49 BATT
P1–24
P2–25
To other
P2–50
PFTU's
P2–49
P2–24
P1–50
P1–25
TC
P2–23
P2–48
Alarm
GND
GND
11 14 36 / 39
To power
LED
supply above
MJ Alarm
Installing PFTUs
GND
LFBENR
9
LFBEN
To
LFBEN
leads on
MDF
slave SM's
REMALMB
REMALMA
1
BATT
LED
To REMALM leads on
slave system monitors
System installation procedures
Page 85 of 500
Meridian 1
master system
monitor (SM)
J3
9
Closed on
8
MJ alarm
7
6
5
4
3
Closed on
2
MJ alarm
1
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