User's Manual

Nexus FT Optional Connections
044-05251 Rev C 3-7
Optional Connections
Alarms
Alarm signals from external sensors are received by an ALI or RCI which forwards them to the CU. The RCI is
used if the WRH has an RCU, otherwise the ALI is used. The software on the CU can activate acoustic or
visual alarms or direct the alarm to the P33 alarm port for forwarding via an RCU through OM-Online. Alarms
can also be handled by the FON. Alarms are configured through OM-Online.
External Alarm
Burglary, fire or other external alarms can be handled by the WRH. External alarm sensors and alarm signals
are connected to the P33 alarm port located to the left in the cabinet, as illustrated in Figure 3-7. The P33
alarm port is described in Chapter 2. The cable for this installation is taken through a strain relief bushing at
the bottom of the WRH cabinet.
Door Open Alarm
A door open alarm can be configured and installed in the WRH. This is arranged with a door switch connected
to pin 8 (AI4) on P28, as described in chapter 2. The location of P28 is shown in Figure 3-7.
Figure 3-8 External Alarm Connection
Main Power Breakdown Relay
To be able to distinguish PSU faults from power failures, a main power breakdown relay can be used. This
relay is not included in the WRH. It has to be mounted outside the WRH cabinet. The relay intended for this
purpose must fulfil the following specifications:
Closing time: Max. 30 milliseconds
Insulation coil/contact: Min. 4KV
A main power connected relay must also be in compliance with
valid local regulations. To inst
all a main power
breakdown relay connection, follow the steps listed in Table 3-2.
MS
DPX
ANT
TEST
DC
-30 dB
-20 dB
MS
DPX
ANT
TEST
DC
-30 dB
-20 dB
POWER SUPPLY UNIT
ALLGON INNOVATION
SWEDEN M105 R6
1
PARKING
FOR W5
W5
8
P27
W6B 10
1
P33
ALARM
P23
LNA
UP-LINK
P32
MODEM
A
U
X
1
P28
DOOR
5
9
6
1
1
16
1
1
M
-
>
S
P11
P34
8
9
15
P26
15 16
S
-
>
M
1
2
3
89
P
3
6
5
X0A
X0B
2
V2
1
16
P12 P13
1
1
1
16
16
16
P4
P5
P6
c
b
a
c
b
a
c
b
a
c
b
a
1P232
1
b
a
1
16P3
16
1
16
P14
1
V1
1
1
1
1
1
4
6
1
15
6
9
15
2
16
1
2
4
5
8
5
P35
P21
PSU
6
10
P31
PC
P29
P24
P25
GND
7
6V6
LNA
DOWN-LINK
LED
P22
1
2
P28 P33