ETAS ES1392.1, User Manual

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Hardware 11
2 Hardware
This chapter contains the hardware descriptions of the ES1392.1 High Current
Switch Board. It consists of the following sections:
• "Functional Description" on page 11
• "Configuring Battery Node 0" on page 12
• "Controlling the Switches" on page 13
• "Overcurrent Protection with the Status Output" on page 13
• "EEPROM" on page 13
• "Battery Voltage at the "CTRL" Connector" on page 14
• "MRC Signal" on page 14
• "Reverse-Connect Protection of the Battery Node Switches" on page 14
• "Parallel Switching of Several Battery Nodes" on page 15
• "Potential Difference between Ground and -UBatt" on page 15
• "Battery Voltage at the "BATTERY NODES" Connector" on page 15
• "Protective Measures" on page 15
2.1 Functional Description
The ES1392.1 High Current Switch Board has two groups of switch channels
which differ in terms of their maximum current rating. Battery node 0 can be
switched to UBatt or -UBatt whereas the other battery nodes can only
be switched to +UBatt (see Tab. 2-1).
Tab. 2-1 Switching Possibilities and Permissible Currents
Battery Node
Switch to
Permissible
Current
+UBatt -UBatt
0 Yes Yes 20 A
1 Yes No 20 A
2 Yes No 12 A
3 Yes No 12 A
4 Yes No 12 A