V-GREAT VG-6728 Installation Manual

Overview

I
II
VG-6728 Digital Pulse Interface is designed to monitor and drive a fire-fighting equipment,
when received an order from FD&A control unit. Its principle and application is generally similar
to VG-6727 Digital Control Interface. The only difference is utilizing Pulse-drive method on
detachable equipment, such as Fire Valve, Solenoid Valve, Exhaust Fan, etc. This interface is
designed with dual-capacitors inside to provide instant energy for the activation of other
fire-fighting equipment, without need of extra power supply.

Features

III
 Distributed intelligent products, plug-in structure design.

With dual capacitor energy storage, and driving the equipment in a pulsed manner, the reliability is
improved.
 There is no need to provide 24V operating power supply to the interface, which can reduce
construction costs.
 Output terminal and the feedback terminal are provided with the function of line monitoring.

Technical Data

IV
 Operating voltage: DC18V-28V
 Output capacity: DC30V/2A
Acting time: 270mS. (time from activate to stop)

 Temperature: -10℃～ +50℃
 Humidity: ≤95%GH (40±2 ) without condensation
 Status indication: When charging, both "Input" and "Output" indicators flash in a quick manner,
and the "Input" indicator flashes in a quick manner when fully charged; When activated, the
"Output" indicator is illuminating and the "Input" indicator is illuminating when receiving a
feedback signal; When there was fault on Output or Input, the corresponding indicator will flash in
a slow manner.
 Loop wiring: Non-polarity
 Maximum charging current: 4mA (when the energy of capacitors is down to zero, it is charged by
loop power);
 Charging time: about 48s (the two lights flash in a quick manner when charging; the energy
storage voltage is 30V ± 2V when fully charged, and the input action monitoring light flashes
when fully charged)
VG-6728 Pulse Interface Installation Manual
℃
1
(Ver1.2, Sep. 2020)
 Standby current: ≤ 1mA