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Safety and usage instructions
Intelligent Power Supply KNX PS640-IP 2U
• Version: 21.09.2021 • Technical changes and errors excepted.
1.
Safety and usage instructions
Installation, testing, operational start-up and troubleshooting should
only be performed by an authorised electrician.
DANGER!
Risk to life from live voltage (mains voltage)!
There are unprotected live components inside the device.
• Inspect the device for damage before installation. Only put undamaged
devices into operation.
• Comply with the locally applicable directives, regulations and provisions for
electrical installation.
• Immediately take the device or system out of service and secure it against
unintentional switch-on if risk-free operation is no longer guaranteed.
Use the device exclusively for building automation and observe the operating instruc-
tions. Improper use, modifications to the device or failure to observe the operating in-
structions will invalidate any warranty or guarantee claims.
Operate the device only as a fixed-site installation, i.e. only in assembled condition and
after conclusion of all installation and operational start-up tasks, and only in the sur-
roundings designated for it.
Elsner Elektronik is not liable for any changes in norms and standards which may occur
after publication of these operating instructions.
For information on installation, maintenance, disposal, scope of
delivery and technical data, please refer to the installation
instructions.
2.
Description
With a very small footprint of only 2 units (36 mm) the
Intelligent Power Supply
KNX PS640-IP 2U
with diagnosis is highly efficient and features an additional auxil-
iary power output (e.g. to support individual components). The device has one choked
and one non-choked output. The outputs are overload and short circuit protected. The
KNX PS640-IP 2U
generates a voltage of 30 V DC and the integrated choke decouples
the KNX bus line from the 30 V DC auxiliary output. Any desired load distribution on
the outputs is possible. The LED display indicates the state of the power supply unit
and the bus line. The KNX bus reset can be triggered over the bus by a communication
object or directly at the device by a single button press. Internal parts of the device are
designed to ensure a long working life and work reliably also when the device temper-
ature increases.
Configuring can be done with the ETS. 36 communication objects are available. For di-
agnostic purposes bus voltage, output current, device temperature and times of oper-
ation are monitored. All details (number, duration) on events like short circuit, over-
