AC808

1. AC808

1.1 General Information

The ETHERNET Hub AC808 is a stand alone device, which can be used universally as a Level-2 Hub in standard ETHERNET networks or ETHERNET Powerlink networks. It is suitable for 100 Mbps (fast ETHERNET) and 10 Mbps networks. The hub automatically recognizes the correct transfer speed and configures the respective channels to it. There is no communication between stations with 10Mbps and 100Mbps.

The Ethernet connections are made using RJ45 connectors. A special feature is that the pin assignments can be crossed for the first channel using a switch, so that the same type of cable can be used for a connection between hubs (hub-hub) as is used between the hub and a network station.

The hub can be installed horizontally or vertically on the mounting rail. Additionally it has insert nuts on the side for easy installation.

1.2 Order Data

1.3 Technical Data

Model Number Short Description Image

0AC808.9 8x Industrial Hub (Layer 2), 24 VDC, 10/100 Mbps with auto-sensing, MDIX-switch for channel 1. Order TB704 terminal block separately!

0TB704.9 Accessory, terminal block, 4pin, screw clamps, 1.5 mm²

0TB704.91 Accessory, terminal block, 4pin, cage clamps, 2.5 mm²

The mounting rail required for installation is included in the delivery.

The 4 pin terminal block TB704 is not contained in the delivery!

Table 1: AC808 order data

Description AC808

General Information

C-UL-US Listed in preparation

Installation Mounting rail installation

Power Supply

Design Switching power supply with reverse polarity protection diode, no overvoltage protection.

Input Voltage MinimumNominalMaximum

18 VDC24 VDC30 VDC

Table 2: AC808 technical data

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AC808

Current Requirements Max. 270 mA

Power Consumption Max. 5.2 W

ETHERNET Interface

Standard (Compliance) ANSI/IEEE 802.3

Data Rate 100 Mbps or 10 Mbps

Signal 10/100 Base-T

Port Design Shielded RJ45 ports

Line length between two stations (segment length) Max. 100 m

Status Display 8 RXD LEDs (RX)

8 Link/Collision LEDs (L/C)Link = green

Collision = red

DCOK LED (OK)

Operational Conditions

Environmental Temperature during OperationInstallation with Mounting Rail on the Bottom of

the HousingInstallation with Mounting Rail on the Front

0 to 60 °C0 to 50 °C

Relative Humidity during Operation 5 to 95 %, non-condensing

Storage Conditions

Storage Temperature -25 to 70 °C

Relative Humidity for Storage 5 to 95 %, non-condensing

Mechanical Characteristics

DimensionsWidthHeight

Depth

115 mm43 mm

(51 mm with mounting rail)86 mm

Description AC808

Table 2: AC808 technical data (cont.)

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AC808

1.4 Dimensions

Diagram 1: AC808 dimensions

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AC808

1.5 Installation

The HUB is installed in the switching cabinet with the mounting rail included in the delivery. Two types of installation are possible:

Diagram 2: AC808 Installation with mounting rail on the bottom of the housing

Diagram 3: AC808 installation with mounting rail on the front

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AC808

1.6 Pin Assignments

1.6.1 RJ45 Port 1

Switch for Port 1

The AC808 is equipped with a switch and that can be used to cross the RX and TX lines on port 1.

Diagram 4: AC808 switch for crossing RX and TX lines on port 1

Diagram 5: AC808 switch settings

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AC808

Pin Assignments for Port 1

RXD ... Receive Data TXD ... Transmit Data

1.6.2 RJ45 Ports 2 - 8

RXD ... Receive Data TXD ... Transmit Data

PIN MDI (not crossed) MDIX (crossed)

1 TXD+ RXD+

2 TXD- RXD-

3 RXD+ TXD+

4 n. c. n. c.

5 n. c. n. c.

6 RXD- TXD-

7 n. c. n. c.

8 n. c. n. c.

Table 3: AC808 pin assignments on port 1

PIN Assignment

1 RXD+

2 RXD-

3 TXD+

4 n. c.

5 n. c.

6 TXD-

7 n. c.

8 n. c.

Table 4: AC808 pin assignment on ports 2 - 8

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AC808

1.6.3 24 VDC Supply

Diagram 6: AC808 24 VDC supply

Terminal Block

Assignment

1 +24 VDC

2 +24 VDC

3 GND

4 GND

Table 5: AC808 terminal assignment 24 VDC supply

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AC808

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