Peavey MediaMatrix xControl LCD, Руководство по оборудованию

Страница: 18 / 36

Chapter 4 - Infrastructure design considerations
14 Version 2.0.0.0 July 7, 2017
.
Introduction
Before you start the installation, it is important to consider how each xControl LCD will be
connected in order to receive power and allow data transfer. The infrastructure must be
designed and installed correctly, in order to provide reliable and error-free performance.
Each xControl LCD requires an EIA-485 connection to a NION. As this connection handles
both the supply of power and the transfer of data, no separate power cable is required. A single
EIA-485 network can support a maximum of 32 devices. Therefore, up to 31 xControl LCDs
can be daisy-chained together, with just the first unit connected to the NION.
Each xControl LCD requires approximately 30mA of power to operate. The NION RS-485
port can supply a maximum of 0.5A (see
RS-422/485 serial port in RS-485 mode in the NION
Hardware Manual ). Therefore, up to 16 devices can be daisy-chained directly to the port. In
order to connect additional devices, an external power supply is required.
NEMA electrical enclosures
xControl LCD units are designed to mount in standard NEMA electrical enclosures. This
includes boxes designed for fixed installation into sheet rock, wood or masonry construction.
We do not recommend that xControl LCD units are installed into plastic boxes or in open wall
space. All cabling and terminations should be installed into EMT conduit, securely coupled to
the mounting box and system ground plane.
Single xControl LCD set up
In this configuration, a single EIA-485 connection is made between the xControl LCD and a
NION. The NION is in turn connected to a power outlet, as well as the control and CobraNet
networks.
The switch at the rear of the xControl LCD is set to IN .