![Viking VFR400 Скачать руководство пользователя страница 10](http://html.mh-extra.com/html/viking/vfr400/vfr400_manual_1023432010.webp)
10
VFR-400 • 5403548 • REV W • 8/17
• Reverse polarity upon activation
• Power limited, Current limited
• Outputs identified as Release are Special Application. All other outputs are Regulated 24 VDC, rated 1 Amp each, 2.5 Amp
total for all circuits.
• End-of-Line-Resistor - 5.1k ohms
• Frequency - continuous
• Maximum voltage - 27 VDC
• Ripple voltage - .3 VDC
• Maximum impedance: 3 divided by NAC current draw
• Maximum resistance for outputs programmed as RELEASING:
1 divided by the current draw of the solenoid when activated
• Normal standy supervisory current - approximately .38mA
• Low current trouble activation - .11mA
• High current trouble activation - .63ma
Release Abort Circuit
• Available chemical mode only
• 1 momentary non-latching Class B circuit
• Power limited, current limited
• Maximum loop resistance - 100 ohms
• End-of-Line-resistance - 5.1k ohms
• Frequency - continuous
• Normal supervisory current - approximately 4mA
• Low current trouble activation - approximately 3.3mA
• Abort current condition - approximately 10mA
• Maximum voltage - 23VDC
NOTE: Mode 3 is not UL Listed
Mode 1 – (ULI) Activation of the abort circuit stops the pre-discharge timer at 10 seconds. If there is less than 10 seconds
remaining, the time goes back to 10 seconds. Releasing the abort switch starts the timer at 10 seconds.
Mode 2 – (IRI) Operates the same as the ULI mode except the abort circuit only functions if the abort button is pressed before the
second alarm is received by the panel. The panel must be programmed for cross zoning for the IRI mode to function.
Mode 3 – (NYC) This mode is not UL listed. Activation of the abort circuit during the pre-discharge countdown adds 90 seconds
to the original pre-discharge time. This is a one-time feature. Repeated pressing of the abort button has no effect. The
pre-discharge timer resumes when the abort button is released
.
Mode 4 – (30-Second Abort) This mode is not UL listed. Activation of the abort circuit stops the pre-discharge timer at 30
seconds. If there is elss than 30 seconds remaining, the timer goes back to 30 seconds. Releasing the abort switch starts
the timer at 30 seconds.
Low/Missing Battery
Causes battery and system trouble if battery falls below 22 volts. Battery circuit is fused and reverse polarity protection is provided.
Input Power
• Universal Input 120VAC, (60 Hz, 165VA) or 220VAC, (50 Hz, 185VA) 15 Amp Branch Line overcurrent protection required
• Power On indicator on LED annunciator module is extinguished on AC power loss (supervised)
• System trouble is also generated if voltage drops below 102V
Backup Power Requirements
• VFR-400 - Standby 121 mA, alarm 274 mA at 24VDC
Zones programmed as Manual Release cannot be aborted. If it is necessary to abort a manual station zone, program that zone as
Detection. Zones programmed as DETECTION containing manual release stations shall not be a part of a cross zone function
and shall have a maximum 30 second pre-discharge time delay.
If the pre-discharge timer is set at 0 the abort circuit will not stop the release circuit.
NFPA 12 prohibits the use of abort circuits on Suppression Systems employing carbon dioxide.
CAUTION
Содержание VFR400
Страница 67: ...67 VFR 400 5403548 REV W 8 17 This page intentionally left blank ...
Страница 98: ...98 VFR 400 5403548 REV W 8 17 ...
Страница 99: ...99 VFR 400 5403548 REV W 8 17 ...