
95-87822.1 8
6.0 HSDM OPERATION
Power Up: Upon power up, an internal automatic
test routine is executed. During this test routine, the
Input and Output channel LED’s are cycled in channel
sequence from red, to green, to yellow. After this initial
LED cycle the LEDs will display the value of the LON
address for a few seconds. If all initialization tests pass,
the HSDM will begin to supervise the input and output
circuits according to its configuration and the LED’s for
the Input and Output channels will indicate the current
status as indicated below:
Green: Normal Condition
Yellow: Trouble / Fault Condition
Red: Active Condition
7.0 INSTALLATION OPTIONS
The HSDM may be installed using DIN rail or it can be
panel mounted for configurations requiring installation
in NEMA or IP enclosures. DIN rail and mounting clip
options must be specified at the time of order. Refer to
the “Specifications” section for mounting arrangements
and dimensions.
8.0 WIRING CONNECTIONS
All electrical connections are made to the field wiring
connectors furnished with the module. Refer to Figure
3 for identification of module wiring terminals. Two
examples of typical wiring applications have been
provided in Figures 15 and 16.
Power Connector, Terminals 1 to 6
24 Vdc Power Input
Be certain to observe polarity and connect the DC
power supply to terminals 1 and 2 of the module.
If additional terminals are required for powering
other devices, these devices should be connected
to terminals 4 and 5. Shields are to be connected to
terminals 3 and 6 — chassis (earth) ground terminals.
Terminals are rated for 10 amperes. Use both sets of
input terminals in parallel if total output current can
exceed 10 amperes.
NOTE
No more than 60 LON devices should be
connected to a single power supply to ensure
proper HSDM circuit supervision.
COM 1 & COM 2 Connector, Terminals 1 to 6
LON/SLC Signaling Circuit Terminals
Be sure to observe polarity when wiring the LON/SLC.
Shield connection — terminals 3 and 6.
1 — “A” side of signaling circuit for COM 1
2 — “B” side of signaling circuit for COM 1
4 — “A” side of signaling circuit for COM 2
5 — “B” side of signaling circuit for COM 2
Input Connector, Terminals 1 to 12
Terminals A & B
Channels 1 to 6 Input Terminals
Refer to individual wiring configurations for terminal
descriptions. Only channel 1 is shown in each diagram.
The information is typical for channels 2-6.
See Figures 15 and 16 for wiring diagrams for wiring to
a Det-Tronics flame detector.
Output Connector, Terminals 1 to 12
Terminals A & B
Channels 1 to 6 Output Terminals
Refer to individual wiring configurations for terminal
descriptions. Only channel 1 is shown in each diagram.
The information is typical for channels 2-6.
See Figures 11 and 12 for wiring diagrams to a solenoid.
8.1 UNSUPERVISED INPUTS
Connect external system wiring to the appropriate
terminals on the terminal block. See Figure 6. The input
to the HSDM consists of a set of normally open contacts.
An EOL resistor is not required.
8.2 SUPERVISED INPUTS
Opens Only Circuit Supervision:
Connect external system wiring to the appropriate
terminals on the terminal block. For Class B wiring,
see Figure 7. For Class A wiring, see Figure 8, noting
that two channels are used for one Class A circuit. The
input to the HSDM module consists of a set of normally
open contacts, with a 10 K ohm, 1/4 watt EOL resistor
in parallel across the set of contacts.
Opens and Shorts Circuit Supervision:
Connect external system wiring to the appropriate
terminals on the terminal block. For Class B wiring,
see Figure 9. For Class A wiring, see Figure 10, noting
that two channels are used for one circuit. The input to
the HSDM module consists of a set of normally open
contacts, with a 10 K ohm, 1/4 watt EOL resistor in
parallel across the set of contacts, and a 3.3 K ohm,
1/4 watt resistor in series with the set of contacts.
Input — Deluge and Pre-Action
In order to comply with NFPA 72 code requirements,
the initiating device circuit(s) for use with deluge and
pre-action system configurations must use Class A