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VFR-400 • 5403548 • REV W • 8/17
CIRCUIT PARAMETERS
All voltages regulated DC
Initiating Device Zones
For connection of dry contact initiating devices and compatible 2 wire smoke detectors. (All values nominal)
• 4 Class B (Class A module available)*
• Power limited, current limited to protect 2 wire smoke detectors
• Maximum 2 wire 24VDC smoke detector load per zone - 2.5 ma (Use only detectors that are listed in compatibility list.)
• Maximum Line resistance - 100 ohms (Except linear heat detection cable, 700 ohms per zone)
• End-of-Line Resistance - 5.1K ohms
• Normal standby current - approximately 4.0 mA
• Standby voltage - 25VDC maximum, 13.4 minimum
• Maximum short circuit current - approximately 36mA
• Maximum Impedance for Alarm - 1400 ohms
• Normal supervisory current - approximately 4mA
• Low current trouble activation - approximately 3.3mA
• Alarm activation current - approximately 10mA
• Ripple voltage - .4 VDC
• Maximum operating voltage range: 22.5 - 25.9V DC
• Frequency - continuous
* In programs 6-9, Zone 1 is a normally closed zone for Firecycle
®
Detectors
Dedicated Supervisory Zones
• For dry contact supervisory devices such as tamper, low air, or high air switches
• 2 Class B circuit, latching or non-latching
• Power limited, current limited
• End-of-Line resistance - 5.1K ohms
• Ripple Voltage - .1 VDC
• Frequency - continuous
• Maximum voltage - 25VDC
• Maximum short circuit current - approximately 36mA
• Maximum line resistance - 100 ohms
• Normal supervisory current - approximately 4mA
• Low current trouble activation - approximately 3.3mA
• Supervisory current condition - approximately 10mA
(Does not include power for any auxiliary devices)
Notification/Release Circuits
The indicating circuits of the VFR-400 are Non-coded. This allows the use of visual and audible appliances on the same circuit.
If temporal notification appliances are required for evacuation, selectable tone appliances shall be used.
The notification outputs do not provide synchronization. The notification appliances shall be compatible with the sync module
selected. The sync module shall be installed as per manufacturers instructions. Synchronization is limited to only one circuit and
not between circuits. Systems intended for the release of Halon 1301 as described in NFPA 12A, or clean agents as described in
NFPA 2001, shall have provision for a pre-discharge notification circuit. If the signal is required to be separate and/or distinct
from the evacuation signal, two notification circuits are required. One shall be programmed as FIRST ALARM. It will provide
a steady output upon activation of any initiating zone programmed as an alarm zone. This is the evacuation signal. If a temporal
signal is required, notification appliances that can produce a temporal tone shall be used. This allows the use of strobes and horns
on the same circuit. The other notification circuit shall be programmed as SECOND ALARM. It will provide a steady output upon
activation of a second initiating zone programmed as an alarm zone. This is when the pre-discharge timer would start and would
be the pre-discharge signal. If a temporal or other type of signal is required, notification appliances shall be used. This allows the
use of strobes and horns on the same circuit. If a separate signal for discharge were required, a third notification circuit would be
used that would be programmed to operate whenever the release circuit is activated.
Zones programmed as MANUAL RELEASE will activate outputs programmed as SECOND ALARM, even if the MANUAL
RELEASE zone is the first alarm zone activated. SECOND ALARM is intended to be used as a pre-discharge signal for cross
zone applications. Refer to page 60 for a complete description of first and second alarm requirements and operation.
• 4 Class B (Class A module available for notification)
Содержание VFR400
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