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Sentry Legacy Installation - Overview
The purpose of this document is to provide an installation overview
for a typical Sentry Legacy Emergency Call / Smoke Warning System. It is divided into 3 sections:
(1) Master Controller, (2) Common equipment and wiring, and (3) Room equipment and wiring.
For detailed installation and service instructions please refer to the Sentry
Legacy Installation
and Service Manual (P/N #930).
Master Console (refer to Fig.
1 (PDF))
The standard HM-550 Master Console consists of a
HM-510 Controller CPU, HM-501 Dual Line Card, HM-514 Keypad, HM-512 Video Display, and
HM-506 Alarm Panel. This equipment
is usually located at a front desk, receptionist desk, or nurses/attendant station. A
HM-533
Standby Power Source (500VA) with 4 battery backed up outlets and 2 surge suppressed
outlets provides power for the Master Console and associated options such as the
HM-516
Printer and HM-652 Paging transmitter. The HM-533 Power Source requires 110VAC, preferably
emergency power. The console communicates to utility and room panels over twisted pair
data cables (RS-485) which terminate to Line Cards installed in the Controller. Each data
line can address a maximum of 50 room panels, 10 utility panels, and an intelligent power
supply. A data line can alternately be used to communicate with up to 16 remote LCD
displays. The standard controller is equipped with two data lines, and, with additional
line cards, can handle a maximum of 16 data lines. The Controller is also equipped with
one parallel printer port , and one RS232 communications port for connection to optional
devices.
Common Equipment (refer to Fig.
2 (PDF))
The data lines from the Master Controller are typically routed to
equipment rooms around the facility which act as concentration points for wiring from
resident rooms and monitored devices. A backboard mounted HM-588 Terminal Board provides
convenient termination for wire runs to room panels, utility panels, and power supplies.
Each Terminal Board provides termination for a power supply and two data lines, and up to
24 room runs or utility connections. In a typical installation a wire run from a point on
a terminal board will "daisy chain" to 6 to 12 room panels. Sentry recommends
West Penn #374 (1 pair 18 ga.-power, 1 pair 22 ga.-data) wire for cable runs. This wire is
color coded to match the connections at each HM-582 Host Connector. Close attention must be
paid to the number of panels fed from each run from the terminal board to minimize the
effects of voltage drops to the room panels. The number and type of
devices in each room, and the wire length, will dictate the number of devices allowed on
each cable run. Please refer to the Sentry Legacy Wiring Design Guide or contact Sentry for more
information. Each HM-588 Terminal Board is powered by a HM-535 Intelligent Power Supply
installed adjacent to the terminal board. This 12 volt 12 amp battery back-up power supply
will typically power 100 room panels through each terminal board. Again, the number of
rooms powered by the supply will be determined by the type and number of devices in each
room and the utility devices powered. Section 8 of the Installation and Service
Instructions for the HM-535 Power Supply contains load estimates for each of the
Sentry Legacy
devices. The HM-535 Power Supply requires 110VAC , preferably emergency power.
Various utility input and output devices can also be mounted in
these rooms for monitoring and controlling functions in the facility. These devices
connect to the terminal board for communication and power.
Room Equipment (refer to Fig. 3
(PDF))
Each residence apartment is typically equipped with one
HM-527 Host
Panel which is the central connection and control point for all other room devices. The
Host Panel is an addressable 2 gang device, usually mounted in the bathroom, with an
emergency pull cord, check-in/cancel button, and indicator LED’s. The Host Panel is
wired using a HM-582 Host Connector which is a 15 wire pigtail for wiring data, power, and
various input and output options, such as HM-541 Remote Call Panels and HM-560 Smoke
Detectors. The remote call and smoke detector connections are supervised and require two
HM-585 EOL Resistors and one HM-568 Smoke Load Resistors for each Host Panel even if these
options are not used. If these features are used these resistors are mounted to the last
device to provide supervision for the wiring to these devices. A maximum of five
HM-541
Remote Call Panels can be wired "daisy chain" using 3 conductor 22 ga. wire
(WPW
230). These single-gang devices are usually mounted in bed rooms and living rooms. A
maximum of 5 HM-560 Smoke Detectors can be wired "daisy chain" using 6 or 8
conductor 22 ga. wire (WPW 252 or 253). The smoke detectors require one pair for power,
one pair for contact monitor, and one pair for smoke horn control. The fourth pair is for
adding an optional HM-547 Pendant Receiver. The smoke detector is mounted to a 4-inch
octagonal junction box. All connections to the HM-582 Host Connector must be accurate.
Inadvertent application of power to the wrong wire can destroy connected equipment,
possibly back to the Master Controller.
Addressing
Each HM-527 Host Panel, HM-610 Utility Input Panel
HM-612 Utility Output
Panel, and HM-535 Power Supply are "addressed" to a unique code on each data line
for communication to the Master Console. The address for the Host and Utility Panels are
set using dip switches on each device. The Host Panels are usually addressed from 0-50,
the Utility Panels from 54-62 and the HM-535 Power Supply is preset to address 63.
Sentry Legacy
Programming Sheets are provided which allow noting each room number to associate with each
unique address on each data line. This information is used to program the Master Console
to communicate with each device. There may NEVER be more than one device at each address
on a data line.
This document is only to provide a general overview to a
Sentry Legacy
installation. There are many variations and options to the system which may require
modification to the outline above. The Sentry Legacy Installation and Service Manual provides
detailed information on each product.
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