Technical data
4.1.5.1.2 +24 VDC power supply
Danger!
This device is only permitted to by supplied by a SELV/PELV power supply unit or with safety extra-low
voltage (SELV) per IEC 61010-2-201.
The necessary 3-pin connector is not included in delivery; for suitable accessories, see
The device is protected against overload and reverse polarity by a soldered fuse (10 A, fast-acting). If the fuse
is defective (e.g. due to overload), the device must be sent to B&R for repairs. If the polarity is reversed, it is not
necessary to replace the fuse.
Pin
Description
Figure
1
-
2
Functional ground
3
+
•
Reverse polarity protection
•
3-pin
•
Male
1 2 3
Electrical properties
Nominal voltage
24 VDC ±25%, SELV
1)
Nominal current
Max. 3 A
Overvoltage category per EN 61131-2
II
Galvanic isolation
Yes
Uninterruptible power supply
No
1)
IEC 61010-2-201 requirements must be observed.
4.1.5.1.2.1 Grounding
Caution!
The functional ground (power supply pin 2 and ground connec-
tion) must be connected to the central grounding point (e.g. con-
trol cabinet or system) via the shortest possible path with the low-
est possible resistance and with the largest possible wire cross
section. This type of grounding is mandatory for proper function-
ality.
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 Panel 9x3 User's manual 2.01
35
