Crestron Lighting Control System, Руководство по конструкции

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Control System Crestron Lighting
The on-board 36MB memory is enhanced with a 4GB expansion slot that supports
off-the-shelf Type II compact flash memory and the IBM Microdrive

hard disk
drive, for on-board storage of program and touchpanel files, room and equipment
profiles, upgrades, databases, and schedules.
Crestron's unique dual bus system, with its high-speed I/O bus architecture, provides
blazing fast throughput, system wide. The two 40Mb/s Y-BUS expansion slots offer
the option of installing any of the CNX-series cards listed in Crestron’s 2003 Product
Catalog, and all C2-series control cards. The 300Mb/s Z-BUS expansion slot is
designed for super high-speed control card applications such as 10/100 Ethernet,
available via Crestron’s single-port C2ENET-1 and dual-port C2ENET-2 Ethernet
cards.
The PAC2 offers eight programmable analog and digital inputs as well as digital
outputs. There are eight normally open relays, isolated with MOV suppression.
The 32 Cresnet connectors that comprise the built-in 8-segment Cresnet hub are
located on the top of the PAC2 (NET A – NET H). When powered by the internal or
external power supply, they expand the number of Cresnet devices that can be
connected to the PAC2. Each group of four connectors can electrically support up to
32 Cresnet devices. When powered by the internal power supply, there is a
maximum of 50 watts (DC) available for all network devices connected to the PAC2.
The LEDs indicate communication on the Cresnet link.
The PAC2 provides external connections for both a back-up processor and
emergency override closure signals. In the absence of Cresnet or in case of a power
failure, a signal is generated to switch power and communication of the Cresnet
system to a back-up processor. When the override connection receives a contact
closure, a signal is passed to the lighting modules via the fifth wire of the
interconnect cable, and the lights are turned on to a programmed preset emergency
level. They remain at this level until that contact closure is opened.
The PAC2 also provides true secure network communications, which is required for
today's corporate networks, automated residence systems, and the Internet. The Dual
Port 10/100 BaseT Ethernet card (C2ENET-2) will support dynamic and static IP
addressing and full duplex TCP/IP and UDP/IP. It offers a WAN port for Internet
and remote-location communications and a LAN port for local in-home use. A built-
in firewall delivers network security with the Network Address Translator (NAT)
and router functions. The built-in Web Server uses memory storage on a compact
flash card for remote access and control. Refer to the PAC2 Operations Guide (Doc.
5941) for more detailed information.
PAC2 2-Series Automation Control System Specifications
SPECIFICATION DETAILS
CPU 32-Bit Motorola ColdFire
®
Processor
Processor Speed 257 MIPS (Dhrystone 2.1 Benchmark)
On-board Memory 36MB (4MB flash, 32MB DRAM, 256KB
NVRAM)
Expandable Memory Compact Flash Slot (up to 4GB) accepts
standard
Type II Compact Flash or IBM Microdrive
®
Dual Bus Architecture
Y-BUS 40 Mb/s Parallel
Communications
Z-BUS 300 Mb/s Parallel
Communications
2 Expansion Card Slots
1 Expansion Card Slot
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Lighting Control System Design Design Guide – DOC. 5999A