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Mean Well KNX-20E-640 Installation Manual

Mean Well KNX-20E-640 Installation Manual

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Introduction
The KNX Power Supply KNX-20E-640 is a 640mA power supply with high efficiency and a small footprint of only 3SU (52.5mm). The
device has a KNX bus choke output and an additional output for ancillary power. The
can meet all kinds of applications. LED indicators are used in case of normal operation, overload conditions and RESET operation. It is
perfectly suitable to power up any products labeled with the KNX trademark.
Features
EIB/ KNX power supply with integrated choke
Compact size with 3US (52.5mm) width
Safety extra low voltage (SELV)
180 ~ 264Vac input
No load power consumption < 0.5W
200ms mains failure back-up time
Protections: Short circuit/ Overload (short-circuit-proof)/ Over voltage
Display
The device is equipped with a reset push button, three LEDs and terminal blocks for the AC, KNX bus line and
1
KNX bus terminal (Red : BUS +V, Black : BUS -V)
2
Ancillary
power terminal
3
RESET button
4
Power ON (Green)
5
Reset (Red)
Ⅰ> Ⅰ
(Red)
6
max
7
AC terminal (L,N,
KNX-20E-640 Installation Manual
)
http://www.meanwell.com
-5℃
~
+50℃
Cooling by free air convection
Isolation classⅠ
LED indicator for normal operation, bus reset and bus overload
Installed on DIN TS-35/7.5 or 15
3 years warranty
wide temperature operating range
ancillary output.

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Summary of Contents for Mean Well KNX-20E-640

  • Page 1 KNX-20E-640 Installation Manual Introduction The KNX Power Supply KNX-20E-640 is a 640mA power supply with high efficiency and a small footprint of only 3SU (52.5mm). The device has a KNX bus choke output and an additional output for ancillary power. The -5℃...
  • Page 2 Installation 1. Wiring Use wires with an adequate cross-section • Use suitable mounting tools to do the wiring and mounting • The maximum number of bus devices connected is 64 • The maximum length of a line segment is 350 m, measured along the line between the power supply and the furthest bus device •...
  • Page 3 (miniature circuit breaker) with an adequate current rating to protect the KNK device. Model KNX-20E-640 Note: These calculated values are based on MCB S201 series manufactured by ABB. Function and Operation The device does not require any configuration with ETS® (Engineering Tool Software) tool. Once the wiring is proper done, the “Power on”...