ABB AC 31 User Manual

Installation
ABB Control - AC 31 Page 4-13
1SBC 260400 R1001-b 06.99
3. Cabling binary extensions
3.1. Extension XI 16 E1 (see Figure 4-18)
The extension is powered with 5 V by the central unit or the remote unit. The connection
between the extension and the central unit is effectuated with the cable situated on the left
side 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 just requires linking one 0 V and one 24 V d.c. terminals.
Warning: The extensions must not be connected or disconnected under power supply.
3.2. Extension XO 08 R1 (see Figure 4-20)
The extension is powered with 5 V by the central unit or the remote unit. The connection
between the extension and the central unit is effectuated with the cable situated on the left
side of the extension.
The connection terminals named C1 and C2 are independent.
Warning: The extensions must not be connected or disconnected under power supply.
3.3. Extension XC 08 L1 (see Figure 4-22)
The extension is powered with 5 V by the central unit or the remote unit. The connection
between the extension and the central unit is effectuated with the cable situated on the left
side of the extension.
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 central unit. In this case, it is necessary to connect together
the 0 V and 24 V d.c. of the external power supply and central unit.
If the external power supply is not connected, the supply led (green) is blinking.
Warning: The extensions must not be connected or disconnected under power supply.
Warning: In the case of the terminal O V is disconnected and in the same time the 24 V d.c. is
connected, the leakage current on output is 16 mA.
3.4. Extension XO 16 N1 (see Figure 4-19)
The extension is powered with 5 V by the central unit or the remote unit. The connection
between the extension and the central unit is effectuated with the cable situated on the left
side of the extension.
The 24 V d.c. power supply used for the loads should be linked 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 just requires linking one 0 V and one 24 V d.c. terminals.
Warning: The extensions must not be connected or disconnected under power supply.
Warning: In the case of the terminal O V is disconnected and in the same time the 24 V d.c. is
connected, the leakage current on output is 16 mA.
3.5. Extension XK 08 F1 (see Figure 4-21)
The extension is powered with 5 V by the central unit or the remote unit. The connection
between the extension and the central unit is effectuated with the cable situated on the left
side of the extension.
The common C of inputs has to be linked to the 0 V or 24 V d.c. according to the sensor type.
Warning: The extensions must not be connected or disconnected under power supply.

ABB AC 31 Specifications

General

Brand	ABB
Model	AC 31
Category	Controller
Language	English