Notifier DPI-232 User Manual

ONYX® Series

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DPI-232 Direct Panel Interface

General

The DPI-232 Direct Panel Interface is a specialized modem
for extending EIA-232 serial data links to remotely located con­trol panels and/or peripherals.

The DPI-232 is used with ONYX® Series NFS-320, NFS2­3030, and NFS2-640 intelligent Fire Alarm Control Panels
(FACPs), and NCA-2 Network Control Annunciator.

NOTE: Please refer to the DPI-232 Manual (PN 51499) for sup­ported legacy products.

Applications include extending distance between:

• FACP and peripheral device (CRT, printer).

• FACP and NOTI•FIRE•NET™ connection module.

• Network annunciator and NOTI•FIRE•NET™ connection
module.

Block diagrams of applications and connections charts are
available in the DPI-232 Manual.

Features

• Utilizes two “dry copper” unshielded twisted-pairs of 16 to
26 AWG (1.3 to 0.13 mm²) wire.

• Capable of carrying full duplex transmission with data rates
of up to 57.6 Kbaud in each direction over a distance of up
to 10,000 feet (3048 m).

• Each full duplex transmission link requires one DPI-232 on
each end of the two pairs.

• Each wire pair is connected to transmitter terminals (+TX, –
TX) of the DPI-232 on one end and to the receiver terminals
(+RX, –RX) of the DPI-232 on the other end.

• Each DPI-232 supervises for ground faults on the wire pair
connected to +TX and –TX terminals. The ground fault
detector has an LED indicator as well as Form-C trouble
contacts.

• Panel/peripheral terminals are electrically isolated from the
twisted pair terminals.

• Equipped with a power-saving switch that allows power
conservation at the lower data rates of up to 9,600 baud.
Higher data rates than 9,600 baud require setting switch
position to “57.6”.

• Plugs into a 120 VAC wall outlet and supplies +24 VDC to
power the DPI-232 modem. This power supply must be
used when the modem is not being powered directly from a
FACP or other UL-Listed power-limited power supply. Listed
for fire protective signaling.

DN-6870:B1 • G-320

Peripheral Devices

Specifications

• Physical dimensions: approximately 4.375" (11.11 cm)

wide by 6.875" (17.30 cm) high. Mounts onto any panel
module location.

• Temperature and humidity ranges: This system meets

NFPA requirements for operation at 0°C to 49°C (32°F to
120°F); and at a relative humidity (noncondensing) of 85%
at 30°C (86°F) per NFPA, and 93% ± 2% at 32°C ± 2°C
(89.6°F ± 1.1°F) per ULC. However, the useful life of the
system’s standby batteries and the electronic components
may be adversely affected by extreme temperature ranges
and humidity. Therefore, it is recommended that this system
and all peripherals be installed in an environment with a
nominal room temperature of 15°C to 27°C (60°F to 80°F).

• Input voltage range: 18.0 to 31.0 VDC, 24 V nominal.

• Power requirements: 245 mA with SW1 set to “57.6”, 148

mA with SW1 set to “LOW”.

• Performance and capacity (per NFPA SLC classification):

– Style 4 for data rates up to 9600 baud.
– Style 3.5 for data rates up to 57.6 Kbaud.

• Distance limitations:
– Up to 10,000 feet (3,048 m) on 16 to 24 AWG (1.3 to 0.2

mm²) unshielded twisted-pair wire.
OR (whichever the above comes first)

– Up to 580 ohm total (290 ohm each wire) of wire resis-

tance.

• Wiring from the DPI-232 that is installed outside the
building:

– Cannot exceed 1,000 meters (3,280 feet).

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Made in the U.S. A.

– Must be in conduit.
– Cannot cross any power lines.

• Mounting: The DPI-232 is designed to mount in CHS-M2,

CHS-4N, or CHS-4L chassis; or on the ADP-4B annuncia­tor dress panel. Refer to the DPI-232 Manual for further
information and diagrams.

Operation Highlights

DIAGNOSTIC LEDS

• Power (green LED 1) illuminates to indicate presence of

DC power.

• RX Line (green LED 2) illuminates when the RX line is con-

nected to the receiver with proper polarities.

• RX 232 (LED 3) when RX Line (LED 2, above), is illumi-

nated, RX 232 (LED 3) illumination indicates data is being
received.

• TX 232 (LED 4) when TX Line (LED 5, below), is illumi-

nated, TX 232 (LED 4) illumination indicates data is being
transmitted.

• TX Line (green LED 5) illuminates when the TX line is con-

nected to the receiver with proper polarities.

• Earth Fault (yellow LED 6) illuminates when a ground fault

is detected on the twisted-pair connected to the transmitter.

SWITCHES AND CONNECTIONS

• SW1: Power-Save switch has two settings, “57.6” and

“Low”. Data rates above 9,600 baud require setting the
switch to “57.6” position. Set the switch to “Low” to con­serve energy for data rates up to 9,600 baud.

•TB1:
–-TX, +TX “Transmit” connections to remote device for use

with 16 – 26 AWG (1.3 to 0.13 mm²) twisted-pair
unshielded wire.

–Earth – connect to ground of cabinet/chassis.
–-RX, +RX “Receive” connections to remote device for use

with 16 – 26 AWG (1.3 to 0.13 mm²) twisted-pair
unshielded wire.

•TB2:
– EIA-232 TX – “Transmit” connection to EIA-232 TX con-

nection of panel/peripheral.

– EIA-232 REF – “Reference” connection to EIA-232 REF

connection of panel/peripheral.

– EIA-232 RX – “Receive” connection to EIA-232 TX con-

nection of panel/peripheral.

– Earth Flt (NO, NC, C) – normally open (NO), normally

closed (NC), and common (C) earth fault trouble contacts.

–+24V – connection to listed +24 VDC power source.
– Common – connection to 24 VDC common.

• NUP: EIA-232 cable connection for NUP (network) cable
from NUP-compatible equipment.

certain approval agencies, or listing may be in process. Con­sult factory for latest listing status.

• UL: S635 (Listed for Canadian and non-Canadian

applications).

• MEA: 253-02-E.

• CSFM: 7300-0028:0222; 7165-0028:0224 (NFS-3030,

NFS2-3030); 7170-0028:0243 (NFS2-640, NFS-320SYS,
NFS-320).

• City of Chicago approved; Class 1, Class 2.

• City of Denver approved.

• FDNY: COA #6085, #6098. #

Product Line Information

DPI-232: Direct Panel Interface modem for extending EIA-232
serial data links.

Agency Listings and Approvals

These listings and approvals apply to the DPI-232. In some
cases, certain modules or applications may not be listed by

This document is not intended to be used for installation purposes.

We try to keep our product information up-to-date and accurate.

We cannot cover all specific applications or anticipate all requirements.

All specifications are subject to change without notice.

For more information, contact Notifier. Phone: [phone], FAX: [phone].

www.notifier.com

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