Xtrails VESDA-E VEP-A00, Product Manual

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VESDA-E VEP-A00-P Product Guide
34 www.xtralis.com
Power to Multiple Detectors
Up to three VESDA-E VEP or VEU detectors may be daisy chained to the same power supply by connecting
the PWR OUT power passthrough socket to the PWR IN socket on each subsequent detector.
Detector 1 Detector 2 Detector 3
PWR IN
PWR OUT
+ +
_
_
PWR IN
PWR OUT
+ +
_
_
PWR IN
PWR OUT
+ +
_
_
PSU
Figure 4-34: Multiple Detectors powered by a single power supply
Compliance
It is recommended that the power supply be compliant with local codes and standards required by the regional
authority. For code-specific information, refer to Codes and Standards Information for Air Sampling Smoke
Detection on page iii.
4.3.4 Communication Ports
The front door must be opened in order to access the communication ports. Refer to Section 7.2 for
information on opening the front door and Figure 4-33 for the physical location of the ports.
Note: For all connection methods the detector also provides a gateway to all the other devices on the
VESDAnet network.
USB
The USB port is used for initial configuration and local maintenance or servicing of the VEP-A00 using a PC
installed with Xtralis VSC software.
Install Xtralis VSC prior to connecting the VEP-A00 to the PC or Laptop. This ensures that the required
USB drivers are present.
Notes:
l
The USB port must not be used for permanent field connection. For example, do not use a USB to
Ethernet adaptor to connect the detector to a LAN using USB.
l
Refer to the Xtralis VSC documentation for operating system compatibility information.
Ethernet
The Ethernet port is used for permanent network connection to the VEP-A00. An Ethernet lead can be routed
through the cable entry ports and plugged into the Ethernet port.
Use a standard Ethernet lead when connecting the VEP-A00 to a network switch, router or directly to a PC or
laptop.
4.3.5 VESDAnet
VESDAnet is a bidirectional data communication network between connected VESDA-E devices. VESDAnet
connectivity is available on the VEP-A00 detector. Refer to Section 2.6 for further information.
It is recommended that RS 485 (Belden 9841 - 120 Ohm) twisted pair cables be used for including the devices
in the network.
The network cables are terminated at the VESDAnet A and B Terminals. Cabling from one VESDA-E device
is brought into the detector at one terminal and looped out to another device on VESDAnet from the other
terminal.
Notes:
l
The polarity of the data wires must be maintained throughout the network.
l
In order for the detector to be able to detect ground faults on the VESDAnet wiring, the Ground Reference
Terminal (Figure 1-1) must be connected to the local ground.