Module giám sát VF6020-00 | VF6021-00

The VES VF6020 and VF6021 Fast Response Contact Monitoring Modules are designed to be used with pull stations, water flow switches, and other applications requiring the monitoring of dry contact alarm initiating devices. The interrupt driven Digital Communications Protocol (DCP) combines maximum communication reliability and fast response to emergency conditions. Two different mounting configurations are provided to meet a wide range of applications. The VF6020 and VF6021 contact monitoring module does not require a separate 24 VDC power source.
Each addressable contact monitoring module is programmed with its own unique Signaling Line Circuit (SLC) loop address. The device address is electrically programmable and stored on onboard EEPROM. Up to 127 devices can be placed on the DCP SLC loop. The module supervises the wiring to the contact with an End Of Line (EOL) resistor in Class B mode. It can be programmed to monitor Normally Open (NO) or Normally Closed (NC) contacts. If a fault condition occurs in the wiring, the module sends a trouble status signal to the fire alarm control panel. When a change of status (contact changes state) is sensed by the VF6020 and VF6021, it sends an interrupt to the Fire Alarm Control Panel indicating that an alarm has occurred. VF6021-00 version has builtin integrated SCI circuitry. In the event of a short on the S-SC line, the SCI circuit will activate and its yellow LED indicator will be turned on steady and the module will report the short circuit condition to the Fire Control Panel.

⇓ Tải xuống Catalogue VF6020|vf6021

Danh mục:

Fast Response Contact Modules
(Class A Wiring)
VF6020-00 and VF6021-00 (with Short Circuit Isolator)

Standard Features
• Single input contact monitor
• Fast, reliable contact monitoring utilizing the DCP (Digital Communications Protocol)
• Two different mounting configurations
• 127 devices can be used per DCP loop
• Bi-colored indicating LED provides module status (Both Models)
• Yellow LED indicates a short circuit condition (VF6021-00 only)
• Can be programmed to monitor Normally Open (NO) or Normally Closed (NC) contacts in Class B
• Operates on Class A or Class B SLC loop
• Accepts up to 14 AWG wire

Technical Specifications

Supply Voltage Nominal 25.3-39 VDC
Average Current Consumption 630 μA (typical), 6.3 mA (Alarm)
SCI on Resistance 40 ohm Max (normal condition)
SCI Fault Detection Threshold 12 Volts (typical)
SCI Isolation Current (Short Circuit Condition) 10 mA (typical)
Maximum Quantity per Loop 127
Mounting 4” Square Electrical Box
Maximum Humidity up to 90%, non-condensing
UL Ambient Installation Temperature Range 32º F to 120º F
Dimensions 4.2” W x 4.7” H x 1.4” D

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