Technical data • Complete system
28
Automation PC 3100 user's manual V0.60
2.4 Electrical characteristics
2.4.1 +24 VDC power supply
Danger!
This device is only permitted to by supplied by a SELV/PELV power supply or with safety extra-low
voltage (SELV) per EN 60950.
The 3-pin male connector required for connecting the power supply is not included in delivery. It 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) to prevent damage to the device in the event of 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 destroyed in the event of error.
+24 VDC power supply
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 terminal block
0TB103.91
Male connector 24 V 5.08 3-pin cage clamp terminal
block
Connector, 3-pin, male
1
2
3
+24 VDC power supply
Table 12: +24 VDC power supply connection
Electrical characteristics
Nominal voltage
24 VDC ±25%, SELV
1)
Nominal current
5.5 A
Overvoltage category per EN 61131-2
II
Inrush current
Max. 60 A for <300 µs
Electrical isolation
Yes
Uninterruptible power supply
No
1)
EN 60950 requirements must be observed.
