Siemens BANY Agent, Compact Operating Instructions

Page: 27 / 46

BANY Agent 27
Compact Operating Instruction
5.3 Power supply
5.3.1 Connecting the power supply
24 V safety extra-low voltage (SELV)
WARNING
The BANY Agent is designed for operation with Safety Extra Low Voltage (SELV). This
means that only SELV complying with IEC 60950-1 / EN60950-1 / VDE0805 can be
connected to the power supply terminals.
The power supply unit for the BANY Agent power supply must meet NEC Class 2 as
described by the National Electrical Code ® (ANSI/NFPA 70).
The power of all connected power supply units must total the equivalent of a power
source with limited power (LPS limited power source).
If the device is connected to a redundant power supply (two separate power supplies),
both power supplies must meet these requirements.
The digital In/Outputs can be subjected to a maximum load of 50 mA (safety extra-low
voltage (SELV), DC 24 V).
Never operate the device with AC voltage or DC voltage higher than 32 V DC.
CAUTION
If the BANY Agent are supplied over long 24 V power supply lines or networks, measures are
necessary to prevent interference by strong electromagnetic pulses on the supply lines. These
can result, for example, due to lightning or switching of large inductive loads.
One of the tests used to attest the immunity of devices of the BANY Agent electromagnetic
interference is the “surge immunity test” according to EN61000-4-5. This test requires
overvoltage protectionfor the power supply lines. A suitable device is, for example, the Dehn
Blitzductor VT AD 24V Art-Nr. 918 402 or comparable protective element.
Vendor: DEHN+SÖHNE GmbH+Co.KG, Postfach 1640, D-92306 Neumark, Germany.