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Electrical installation

Wiring of the system bus (CAN)

EDBMZ9374X DE/EN/FR 4.2

6.4 Wiring of the system bus (CAN)

Principle structure

120 W

9374-Master

GNDLOHI PE

9374-Slave1

GNDLOHI PE

9374-Slave2

GNDLOHI PE

9374-Slave3

GNDLOHI PE

9374_005

Bus device 1 (controller)

Bus device 2 (9374 master)

Bus device n (n = max. 63)

9374 slave1 ... 9374 slave3 communicate with 9374 master (only bus device A

)

ƒ Only terminals of the same type must be connected

ƒ Connection of the bus terminating resistors:

– One resistor 120 W on the first and last bus device .

Features:

ƒ CAN−based with bus protocol according to CANopen (CAL−based

Communication Profile DS301)

ƒ Bus expansion:

– 25 m for max. 1 Mbit/s baud rate

– up to 1 km with reduced baud rate

ƒ Extremely reliable data transmission (Hamming distance = 6)

ƒ Signal level to ISO 11898

ƒ Up to 63 bus devices are possible

Specification of the transmission cable

We recommend the use of CAN cables in accordance with ISO 11898−2:

CAN cable in accordance with ISO 11898−2

Cable type Paired with shielding

Impedance

120 W (95 ... 140 W)

Cable resistance

Cable length £ 300 m

£ 70 mW/m

Cable length £ 1000 m

£ 40 mW/m

Signal propagation delay £ 5 ns/m

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 121 122

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