Vdc Power Supply - B&R Automation PC 3100 User Manual

2.2.6.2 +24 VDC power supply

Danger!
The device is only permitted to be supplied with a SELV/PELV power supply or with safety extra-low
voltage (SELV) per EN 60950.
The 3-pin connector required for connecting the power supply is not included in delivery. This can be ordered from
B&R using model number 0TB103.9 (screw clamp terminal block) or 0TB103.91 (cage clamp terminal block).
The pinout is shown in the following table. The supply voltage is protected internally by a soldered fuse (15 A, fast-
acting) so that the device is not damaged if the supply voltage is overloaded (fuse must be replaced) or connected
incorrectly (reverse polarity protection, fuse replacement not necessary). If the fuse is destroyed during a fault
event, the device must be sent to B&R for repairs.
Reverse polarity protection
Pin
1
2
3
Model number Short description
Terminal blocks
0TB103.9 Connector, 24 V, 5.08 3-pin screw clamp terminal block
0TB103.91 Connector, 24 V, 5.08 3-pin cage clamp terminal block
Electrical properties
Nominal voltage
Nominal current
Overvoltage category per EN 61131-2
Inrush current
Galvanic isolation
Uninterruptible power supply
1) EN 60950 requirements must be observed.
2.2.6.2.1 Grounding
Caution!
The functional ground (power supply pin 2 and ground connection) must be connected to the central
grounding point (e.g. the control cabinet or system) via the shortest possible path with the lowest pos-
sible resistance and with the largest possible wire cross section. This type of grounding is mandatory
for proper functionality.
Automation PC systems have a ground connection on the interface cover.
For example, a copper strip must be attached to the ground connection at a central grounding point of the control
cabinet or system in which the device is installed. The wire cross section should be as large as possible (at least
2.5 mm²).
Automation PC 3100 User's manual V 1.00 Translation of the original documentation
+24 VDC power supply
Description
+
Functional ground
-
Table 22: +24 VDC power supply connection
24 VDC ±25%, SELV
1)
Max. 5.5 A
II
Max. 60 A for <300 µs
Yes
No
Grounding
Technical data
Connector, 3-pin, male
1 2 3
+24 VDC power supply
37