Electrical ratings:
Supervisory 18-40 VDC
60mA
Alarm 18-40 VDC
130mA
Electrical connections:
The MXL Control Panel connects to
the Silent Knight Model 5128/5129
Digital Fire Communicator using the
Alarm, Trouble, and Supervisory dry
contacts on the MXL Main Board.
Refer to the Silent Knight 5128/5129
Fire Slave Communicator Installation
Manual, P/N 150805, provided with
Silent Knight Model 5128/5129 for
dialer instructions.
The Silent Knight Model 5128/5129
monitors all System troubles through
the MXL trouble relay. The MXL delays
the AC fail trouble signal in accordance
with NFPA and UL requirements.
Silent Knight Model 5128/5129
Connections and Ratings
4 - 105
In NFPA 72 Remote Station install
batteries to provide 60 hour standby
capacity. For signalling service DACT
wire according to the diagram on the
following page.
In NFPA 72 Central Station connec-
tions AC fail reporting is delayed. The
delay is 6 hours (25% of 24 hours) for
NFPA, Local and Proprietary, and 15
hours (25% of 60 hours) for NFPA,
Municipal Tie and Remote Station.
Only the reporting of the trouble is
delayed.
AC power must be present for a full
minute before the system switches
back to AC power from the battery.
Using the optional AC monitor input,
the Silent Knight Model 5128/5129
monitors AC fail trouble. When the
MXL System reports an AC fail trouble,
the Silent Knight Model 5128/5129
sends a specific code to the Central
Station that identifies the trouble as AC
fail.
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