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AI-USB Series
®
A Line of ARCNET
Fixed-Port Active Hubs with USB Interface
INSTALLATION GUIDE
INTRODUCTION
The AI-USB Series of hubs work like AI Series hubs, but also
provide computer access via USB. Each device acts as a hub
with three-ports, two external and one internal. The internal
port connects to USB ARCNET adapter circuitry within the
hub. A USB front panel socket gives access to a laptop or
desktop PC.
The AI-USB complies with the USB 2.0 and USB 1.1 standards
to provide fast, convenient access to an ARCNET LAN with no
need of a network interface module in the computer.
The AI-USB can permanently connect to the ARCNET
network as a bus extender while giving a laptop computer
temporary access. Thus, field wiring is undisturbed while a
computer connects to monitor, configure or test the devices on
the ARCNET network. There are coaxial, twisted-pair and
AC- or DC-coupled EIA-485 models.
The internal USB adapter consists of a COM20022 ARCNET
controller and high-speed microcontroller. The 128K bytes of
receiver buffering aids reception of broadcast messages. With
a 480 Mbps USB link, dropped ARCNET packets are rare.
The AI-USB has the same power connectors as the AI Series of
hubs and requires only low-voltage power from either an AC
(8–24 volts) or DC (10–30 volts) source. Approved companion
transformers are available for UL and CE Mark applications.
Provisions exist for redundant power connections. Each unit is
shipped with both panel and DIN-rail mounting hardware and a
®
Windows
2000/XP
disk containing AI-USB software for
. A
USB cable is also provided.
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Related Manuals for Contemporary Controls ARCNET AI-USB Series
Summary of Contents for Contemporary Controls ARCNET AI-USB Series
- Page 1 AI-USB Series ® A Line of ARCNET Fixed-Port Active Hubs with USB Interface INSTALLATION GUIDE INTRODUCTION The AI-USB Series of hubs work like AI Series hubs, but also provide computer access via USB. Each device acts as a hub with three-ports, two external and one internal. The internal port connects to USB ARCNET adapter circuitry within the hub.
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Page 2: Specifications
SPECIFICATIONS Electrical Input voltage: 10–36 volts 8–24 volts Input power: 7 VA Input frequency: 47–63 Hz Environmental Operating temperature: 0°C to +60°C Storage temperature: –40°C to +85°C Humidity: 10% to 95%, non-condensing ARCNET Data Rates Table 1 — ARCNET Data Rates Shipping Weight LED Indicators 1 lb. - Page 3 MECHANICAL Figure 2 — AI-USB Dimensions Daughter Board Jumper Blocks for EIA Bias and Termination Figure 3 Figure 4 Figure 5 — EIA-485 DC-Coupled AC-Coupled Data Rate Switch EIA-485 ROTARY DATA RATE SWITCH Although the switch in Figure 5 displays stops for only 3 data rates, every rate in Table 1 has a stop.
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Page 4: Installation
INSTALLATION Mounting The AI-USB is designed for mounting in a wiring closet or an industrial enclosure using either set of the provided mounting hardware listed below: TS-35 DIN Rail Mounting Panel Mounting DIN rail clip Panel mounting bracket DIN rail clip support bracket 4-40 screws, flat-head (4) 4-40 screws, pan-head (2) For quick snap-mounting to 35 mm DIN rail, a reinforced DIN... - Page 5 Software Driver installation instructions are provided in the readme file located on the disk that accompanies the product. Powering The AI-USB The AI-USB requires low voltage AC or DC power applied to its four-pin removable keyed plug. Consult the Specifications page for the power requirements.
- Page 6 AC Powered If AC power is desirable, the AI-USB can be powered by the Figure 9 secondary of a low-voltage transformer ( ) whose primary is connected to the AC mains. The secondary voltage must be in the range of 8–24 VAC and must not be grounded. When using a grounded secondary transformer, refer to Figure 10.
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Page 7: Indicator Lights
Indicator Lights PORT (#s): Any of the three port activity LEDs will glow green whenever data is passing through its associated port. RECON: This LED will flash yellow in response to any ARCNET reconfiguration event. Repeated flashing of this LED indicates a fault with cabling or a node device. STATUS: During boot, this LED flashes green to indicate that the AI-USB is in standby mode. - Page 8 CXS Coaxial Star There are generally two types of coaxial cables that are used with ARCNET, RG-59/u and RG-62/u. RG-59/u is 75-ohm cable which does not match the impedance of the transceivers used on the AI ports. This cable will work, but communication distances are reduced compared to RG-62/u because of the higher attenuation of RG-59/u cable.
- Page 9 485 DC-Coupled EIA-485 A removable 5-position screw connector ( ) is provided Figure 1 for each DC-coupled EIA-485 segment. Two terminals are provided for differential signal phase A and two for phase B. The middle pin connects directly to chassis (the enclosure). A DC-coupled segment can be up to 900 feet of IBM type 3 (or better) STP or UTP cable, and as many as 17 nodes can occupy a segment.
- Page 10 Ground For EIA-485 DC operation, it is important that all devices on the segment be referenced to the same ground potential so the common mode voltage requirement (+/–7 Vdc) of the EIA-485 specification is achieved. This can be accomplished by a separate ground wire tied to all devices or using the third wire ground of the power connector.
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Page 11: Warranty
Returning Products for Repair Before returning a product for repair, contact Customer Service. A representative will instruct you on our return procedure. Contemporary Control Systems, Inc. Contemporary Controls Ltd 2431 Curtiss Street Sovereign Court Two, UWSP... -
Page 12: Declaration Of Conformity
Information Technology Equipment EN 55024:1998, Information Technology Equipment — Immunity Characteristics — Limits and Methods of Measurement Manufacturer: Authorized Representative: Contemporary Control Systems, Inc. Contemporary Controls Ltd 2431 Curtiss Street Sovereign Court Two, UWSP Downers Grove, IL 60515 USA Sir William Lyons Road...
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