Redundant Power Feed Module, KFD2-EB2.R4A.B
- Interface for Power Rail
- Used for redundant configuration
- Supply current ≤ 4 A
- Replaceable fuse
- Relay contact output, reversible
- LED status indication
The power feed module supplies the Power Rail with a voltage of 24 V DC and a maximum current of 4 A. The device is designed for applications requiring redundant power.
In the event of a device fault or a wiring fault of any isolator on the Power Rail, the collective error messaging relay alerts the controller via a binary I/O point. This relay can be configured as normally-open or normally-closed.
A green LED on the front of the device indicates the power state, and a red LED lights up during a fault condition.
Additionally, the bus implemented in the Power Rail is forwarded to the terminals 13 and 15 for usage with the RS-485 connection of the KFD2-WAC2-Ex1.D device. Terminal 14 is only for test purposes.
In the sense of functional safety (SIL) the device provides no dangerous failures. Thereby the safe condition of the supplied isolators must be defined as the de-energized state. Thus the device will not influence the safety calculation or the SIL value.
This device is compatible with all versions of the Power Rail and provides group fusing.
Note: Redundant systems require 2 KFD2-EB.R4A.B power feed modules.
|Power feed module, redundant supply|
|Connection||terminals 11+, 12-
terminals 8+, 9-
|Rated voltage||20 ... 30 V DC
The maximum rated operating voltage of the devices plugged onto the Power Rail must not be exceeded.
|Fusing||5 AT/250 V AC
recommended maximum utilization of the fuse: 80 %
|Power dissipation||≤ 2.4 W|
|Output rated operating current||max. 4 A|
|Output voltage||Ui ≥ rated voltage Ur = Ui - 0.6 V|
|Fault signal||relay output: NO contact|
|Contact loading||30 V AC/ 2 A / cos φ ≥ 0.7 ; 40 V DC/ 2 A|
|Energized/De-energized delay||approx. 20 ms / approx. 20 ms|
|Configuration||via DIP switches|
|Labeling||space for labeling at the front|
|Directive 2014/30/EU||EN 61326-1:2013 (industrial locations)|
|Electromagnetic compatibility||NE 21:2006|
|Degree of protection||IEC 60529:2001|
|Ambient temperature||-20 ... 60 °C (-4 ... 140 °F)|
|Degree of protection||IP20|
|Mass||approx. 100 g|
|Dimensions||20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2|
|Mounting||on 35 mm DIN mounting rail acc. to EN 60715:2001|
|Data for application in connection with hazardous areas|
|Certificate||TÜV 00 ATEX 1618 X|
|Marking||# II 3G Ex nA nC IIC T4|
|Directive 2014/34/EU||EN 60079-0:2012+A11:2013 , EN 60079-15:2010|
|IECEx approval||IECEx UL 16.0051X|
|Approved for||Ex nA nC IIC T4 Gc|
|Supplementary information||Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.https://control-automation.com/.|
|Optional accessories||- universal power rail UPR-03(-M)(-S)
- universal power rail UPR-05(-S)
- profile rail K-DUCT-GY(-UPR-03)
- profile rail K-DUCT-GY(-UPR-05)
- profile rail K-DUCT-BU(-UPR-03)
- profile rail K-DUCT-BU(-UPR-05)