Radionics D7024 Reference Manual - 1.0 Overview
Page 4
Copyright © 1997 Radionics, Inc.
D7024 Reference Guide
1.0 Overview
1.1 System Overview
The D7024 Control/Communicator is a fully integrated
hard-wire fire alarm system. It can support 4 input
points (expandable to 8) and 16 individual users. The
control panel has a built-in LCD keypad, however, up
to 4 additional keypads may be used to provide user
interface with the system and programming access for
the installer. The D7024 also includes the following
features:
• Built-in Dual-line Communicator
• Menu Driven Keypad Programming
• Freely Programmable Alpha Display
• 100 Event History Buffer
• 16 User Codes
• U.L. Listed, C.S.F.M. Approved
1.2 Specifications
1.2.1 Enclosure Housing
The standard enclosure is manufactured from 18
Ga., cold-rolled steel, and measures 15 in. Wide, by
20.75 in. High, by 4.25 in. Deep (38.1 cm Wide, by
52.7 cm High, by 10.8 cm Deep). A keyed lock is
included, and the LEDs and display are visible
through the door.
1.2.2 Temperature
• Storage and Operating Temperature:
+32° to +120°F (0° to +49°C)
1.2.3 Power
• Input Power:
120 V, 60 Hz, 1.5 A (max. 20 A fused)
• Notification Appliance Circuit Power:
24 VDC nominal, unfiltered (special application)
with up to 2.5 A capacity (but limited by overall
4.0 A capacity). Refer to Technogram P/N 34950B
for compatible devices
• Auxiliary Power:
24 VDC nominal, unfiltered (special application)
Refer to Technogram P/N 34950B
• Initiating Circuit (Smoke) Power:
24 VDC nominal
Refer to Technogram P/N 34445B
• Option Bus Power:
12 V +/- 5%, 500 mA
• Optional Standby Batteries:
Two 12 V (in series), 7 - 40 AH
1.2.4 Outputs
• 2 on-board notification circuits - NAC 1 and NAC 2.
These are 24 V outputs for notification devices with
up to 2.5 A capacity (but limited by overall 4.0 A
capacity) on each circuit.
• Wired for standard Class B operation.
• Local Relays: The main panel includes two Form
“C” relays. The relay contacts are rated at 6 A,
24 VDC. No transient suppression or overcurrent
limiting are performed on the contacts of these
relays. The default selection for the relays is to
indicate general alarm and general system
trouble. By programming them to one or two of
the zone numbers described for point/zone
mapping, they can be programmed to activate on
a variety of conditions.
• Remote Relay Module (D7035): The D7035 is an
Octal Relay Module that provides 8 Form “C”
relay outputs. It connects to the D7024 via the
option bus. The outputs are fully programmable,
exactly as the local relays are programmed. Each
output operates independently of the other 7 to
provide complete flexibility. Communication with
the D7035 is supervised.
1.2.5 Points (Initiating Circuits)
All points work with 2 or 4-wire detectors. The
system has an optional alarm verification feature.
• Number of 2-wire Circuits:
4 circuits, expandable to 8
• Type of Circuit:
Class B, Style B
• End-of-Line Resistor:
2.21k ohms, P/N 25899 U.L. Listed
• Supervisory Current:
8 - 20 mA
• Required Current for Alarm:
25 mA
• Maximum Short Circuit Current:
44 mA
• Maximum Line Resistance:
150 ohms
• Circuit Voltage Range:
20.4 to 28.2 VDC
• Maximum Detectors per Point:
20 detectors (2-wire)
• Total Detector Standby Current:
3 mA max.
• Response Time:
500 milli-seconds and programmable from 1
second to 15 seconds.