Technical data • Complete device
34
Automation PC 910 User's Manual V 1.00
2.5.2 Supply v24 VDC
The 3-pin socket required for the supply voltage connection is not included in delivery. This can be ordered from
B&R using model number 0TB103.9 (screw clamp) or 0TB103.91 (cage clamp).
The pinout can be found either in the following table or printed on the housing. The supply voltage is protected
internally by a soldered fuse (15 A, fast-acting) so that the device cannot be damaged if an overload occurs (fuse
replacement necessary) or the voltage supply is connected incorrectly (reverse polarity protection - fuse replace-
ment not necessary). The device must be returned to B&R for repairs if the fuse is blown due to an error.
Supply voltage
Protected against reverse polarity
Pin
Description
1
+
2
Functional ground
3
-
Model number
Short description
Terminal blocks
0TB103.9
Connector 24 V 5.08 3-pin screw clamp
0TB103.91
Connector 24 V 5.08 3-pin cage clamp
3-pin, male
Supply voltage
+24 VDC
Table 12: 24 VDC supply voltage connection
Ground
Caution!
The pin's connection to the functional ground (pin 2) should be as short a path as possible (e.g. in
the control cabinet). We recommend using the largest possible conductor cross section on the supply
plug.
The grounding connection is located on the bottom of the APC910 systems.
Figure 14: Ground connection
The M4 self-locking nut can be used, for example, to fasten a copper strip that is built into the APC910 at a central
grounding point in the control cabinet or system. The largest possible conductor cross section should be used (at
least 2.5 mm²).
