VSL2.909.031ASY
V1.04
Features
Easy Installation
Loop power supply
Both side
isolate control
Designed to comply with EN 54-17
Description
VI-6777 Digital Isolate Interface monitors the short circuit fault at the loop detection zone ,It has both side isolate
function ,if detects the short circuit on loop it will isolate that side to ensure loop communication signal will not be
affected or interrupt by short-circuit fault. When the short circuit fault is removed, the isolate interface will
automatically restore loop.
Technical data
Operating Voltage:
18-28V(Modulated-pulse)
Standby Current:
≤
1mA
Isolate holding current
≤
10mA
Action condition
Isolate input/output side short circuit or loop voltage
≤
7.5V
Wiring
Two-wire
（
non-polarized
）
Temperature range:
-10
℃～
50
℃
Humidity:
≤
95%RH,
（
40
±
2
℃）
No condensation
Isolate Indication:
Active A or Active B
LED illuminates steadily.
IP Rating:
32
Installation Base
VB-6618
Note:
The VI-6777 Isolate interface is working with VSAIL Digital Protocol
Installation
Dimensions
：
Showing on Fig.1
Fig.1
Mounting:
Warning: Please disconnect the loop power in order to avoid control panel broken by short circuit when
mounting Base.
1.Make sure the mounting direction mark “
↑
” on Base is upwards .
2.Install the base stable by using two screws,and connect all cables in accordance with wiring details.
3.Install the Isolate interface body on to base directly.
4.Isolate interface Mounting showing in Fig.2
Installation and Operation Manual V1.04
VI-6777 Digital Isolate Interface
Beijing VSAIL Fire Protection Equipment Co. Ltd.
Building 32, Huilongsen Technology Park,
No.99 14th Kechuang Street, BDA, Beijing, PRC
