Cabling Digital Central Extensions - ABB 07CR41 Operating Manual

4.3

Cabling digital central extensions

Advant Controller AC 31 / Issued: 08.99
•
Extension XI 16 E1 (see Figure 18 on page 4–12)
The extension is powered with 5 V by the basic unit or the remote unit. The connection
between the extension and the basic unit is made with the cable situated on the left of the
extension.
The 24 V d.c. power supply used for the sensors should be linked to the 0 V and 24 V
terminals situated on the top or bottom terminal blocks. These terminals are linked internally,
therefore it is only necessary to link one 0 V and one 24 V d.c. terminal, irrespective of whether
the inputs are situated at the top or the bottom.
Warning: The extensions must not be connected or disconnected under power supply.
•
Extension XO 08 R1 (see Figure 19)
The extension is powered with 5 V by the basic unit or the remote unit. The connection
between the extension and the basic unit is made with the cable situated on the left of the
extension.
The connection terminals C are independent.
Warning: The extensions must not be connected or disconnected under power supply.
•
Extension XC 08 L1 (see Figure 20)
The extension is powered with 5 V by the basic unit or the remote unit. The connection
between the extension and the basic unit is made with the cable situated on the left of the
extension.
The 24 V d.c. for the sensors must be connected with the 0 V and 24 V d.c. of the external
power supply. An external 24 V d.c. power supply has to be used if the total current exceeds
the capacity of the 24 V d.c. power supply of the basic unit.
Warning: The extensions must not be connected or disconnected under power supply.
•
Extension XO 16 N1 (see Figure 21)
The extension is powered with 5 V by the basic unit or the remote unit. The connection
between the extension and the basic unit is made with the cable situated on the left of the
extension.
The 24 V d.c. power supply used for the loads should be connected to the 0 V or 24 V d.c.
terminals situated on the top or bottom terminal blocks. These terminals are linked internally,
therefore it is only necessary to link one 0 V and one 24 V d.c. terminal.
Warning: The extensions must not be connected or disconnected under power supply.
•
Extension XK 08 F1 (see Figure 22)
The extension is powered with 5 V by the basic unit or the remote unit. The connection
between the extension and the basic unit is made with the cable situated on the left of the
extension.
The common C of inputs has to be linked to the 0 V or 24 V d.c., depending on the sensor
type.
Warning: The extensions must not be connected or disconnected under power supply.
4 – 11 Installation
3