E-T-A PowerPlex CM500 - 6 Connection to Power Supply; 7 Integration of the Device in the CAN Bus Network

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6. Connection to power supply

After interconnecting all PowerPlex

components of your system via a CAN bus cable, the installation only has to

be connected to electrical power supply. PowerPlex

is suitable for both DC 12 V and DC 24 V.

Caution

• Please make sure that all electrical installations were carried out in accordance with EN ISO

10133.

• Please make sure that the power supply is disconnected and protected against inadvertent re-

connection during the works on the system.

• Please avoid large differences between the lengths of the (+) and (-) cables.

Connecting the device

The 2-pole connector (X1) are used for connecting the PowerPlex

Compact Module to the power supply (DC 12

V/DC 24 V). A mating connector ensures easy connection.

Caution

The device has to be directly connected with the power supply via a suitable overcurrent protection. It

must not be linked up within the system via some other PowerPlex

component to ensure impeccable

start-up of the entire system.

Protection and cable cross sections

Suitable elements for overcurrent protection must be used to protect the PowerPlex

components. The current

ratings of the circuit breaker should correspond to the max. expected total current of all outputs of the PowerPlex

component to be protected.

In the event of 60 A this corresponds to a cable cross section of 16 mm² connected to the U

Batt

+ (1.1) of the

2-pole connector. Since Ground (GND

) of the loads on outputs (X2: O1 - O10 and X3: O1 - O4) is led externally,

a cable cross-section of 4 mm² is sufficient for the U

Batt

- (1.2) of the 2-pole connector.

7. Integration of the device in the CAN bus network

To set up the CAN bus network all PowerPlex

components are connected with each other (→ Fig. 10).

A CAN bus must be terminated with a 120 Ω resistor at the beginning and end. Bus terminating resistors are not

installed in the Compact Module. If the device is operated as the first or last participant on the CAN bus, a 120 Ω

terminating resistor has to be placed between the pins 3.1 and 3.2 of the 22-pole connector (→ Table 13).

Fig. 10: Connection of the PowerPlex® components in the CAN bus system