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Figure 4-2. Connecting the -48Vdc power filters on the MRT 23
Ground terminal
Figure 4-3. Connecting the -48Vdc power filters on the MRT 19
Ground terminal
5
Replace the power terminal shield by pressing it onto the two clips at each end of
the power terminal strip until they latch to hold the shield in place.
Monitoring backup power to a Stinger MRT
The power input components of the Stinger MRT are integrated into the chassis and
are not field replaceable. Two input connections are provided so that redundant
sources can provide power to a Stinger MRT.
Power sources that have alarm capabilities can be monitored by the Stinger MRT.
You can do this by connecting the alarm leads from each power source to the DB-15
ALARM RELAY connector, described in "Connecting a Stinger MRT to monitor the
alarm status of other devices" on page 3-25. When a power source fails, an alarm will
be generated from the Stinger MRT unit.
A power source that provides switch-over capability between primary and secondary
power supplies can be monitored by connecting the switch-over status signal to the
ALARM RELAY connector. When a failure of the primary power supply causes a
switch-over to the secondary power supply, an alarm will be generated from the
Stinger unit.
Stinger® MRT Getting Started Guide
-48 Vdc inputs
A
B
LINE 1-24
SEE INSTRUCTION MANUAL
SIEHE ANLEITUNG
LIRE LE MANUEL d'INSTRUCTION
USE OF RING LUGS RECOMMENDED
A
B
Return connections
Return connections
-48 VDC input B
RTN
RTN
48V B
48V A
B
A
PORT 8
Determining the Operating Status
Monitoring backup power to a Stinger MRT
SHELF
ALARM RELAY
POTS
BITS
ID
MODEM
LINE 25-48
B
A
-48 Vdc input A
24
PORTS
PORT
6
1
PORT 1
STATUS
SEL
GROUP
MINOR
CONSOLE
ETHERNET
MAJOR
1
10
5
EXP2
EXP1
10BT
4-3
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