Technical data • Fully assembled device
Chapter 2
Technical data
Automation PC 810 with GM45 CPU board user's manual V1.28
47
2.6 Device interfaces
2.6.1 +24 VDC supply voltage
The 3-pin socket required for the supply voltage connection is not included in delivery. It 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 APC810 housing. The supply voltage is
protected internally by a soldered fuse (15 A, fast-acting) to prevent damage to the device in the event of an
overload (fuse replacement necessary) or if the voltage supply is connected incorrectly (reverse polarity protection
- fuse replacement not necessary). The device must be returned to B&R for repairs if the fuse is blown in the event
of 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
1 2 3
Table 14: Supply voltage connection 24 VDC
2.6.1.1 Grounding
Caution!
The functional ground (pin 2) must be connected to ground (e.g. control cabinet) using the shortest
possible path. Using the largest possible conductor cross section on the supply plug is recommended.
The ground connection is located on the bottom of the APC810 system.
The M4 self-locking nut can be used, for example, to fasten a copper strip to a central grounding point in the control
cabinet or system where the APC810 is installed. The largest possible conductor cross section should be used
(at least 2.5 mm²).