VSAIL VI-6777 User manual
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
VSL2.909.031ASY V1.04
Fig.2
Terminal Connection
1. 1,3:connecting with Detection loop L+;L-(Input),
A side isolate.
2. 8,10:connecting with Detection loop L+;L-
(Output),B side isolate.
3.Loop wiring is shown in Fig.3
Warning
Maxmium 32 devices connect with one side of Isolate
Interface.
Please make sure 1,10 connect with L+;3,8 connect
With L-.It recommends using different colors to distinguish
the line.Otherwise it will cause the loop wiring error.
Fig.3
Wiring Guide
Wiring guide in Fig.4.
If short circuit at “Zone 1”,
“ Active B” LED of Isolate
Interface A and “ Active A”
LED of Isolate Interface B
will emitting ,“Detection
Zone 1” will be isolated.
If “Zone 3 ” had short circuit
fault,the Isolate interface C
will start to isolate, “Active
B”of Isolate Interface C will
emitting. And A side of
Isolate Interface D also start
to isolate.
Testing
Warning：Power is switched on after all devices are installed completely.
Isolate test: The LED indicator “Active A” or “Active B” will emitting when apply the short circuit to
corresponding side of isolate Interface.
Reset:Remove the short circuit fault,the the isolate interface will go back to normal.
Mounting direction
Fig.4
VSL2.909.031ASY V1.04
Fault Finding
No response Wiring fault
Isolate side reverse Reversed wiring
Cautions
1. Dust cover on Isolate Interface shouldn’t be removed between installation and acceptance test to avoid
damage.
2. Fire alarm test requirement as specified in applicable codes,We suggest to test every 12 month.
Limited Warranty
VSAIL warrants that the product will be free of charge for repairing or replacing from defects in design, materials
and workmanship during the warranty period. This warranty doesn’t cover any product that is found to have been
improperly installed or used in any way not in accordance with the instructions supplied with the product. Anybody,
including the agents, distributors or employees, is not in the position to amend the contents of this warranty.
Please contact your local distributor for products not covered by this warranty.
