Siemens SIMATIC RF300, Системное руководство

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NOTICE
Plugging/pulling the power supply cable
Plugging or pulling the power cable of the wide-range power supply unit is only permitted
when no voltage is applied (powered-down)
NOTICE
Strain on the power cable connector
The power cable is attached to / removed from the power supply using the knurled nut
integrated in the plug. Avoid twisting the plug once it is mounted. If high shock and vibration
occurs, this stress must be absorbed by the power cable.
NOTICE
Restriction for maximum load
If the readers are operated permanently at full load and the digital inputs/outputs are loaded
with the maximum total current of 1.1 A, the maximum current consumption of a reader can
reach 2 A. In this case, a maximum of one reader may be connected per wide-range power
supply unit.
The wide-range power supply unit (protection class I, degree of protection IP67) has four
mounting holes for securing the device.
Installation instructions
The power supply unit must be connected with the described connecting cables in the primary
and secondary circuits. The connectors at the power supply unit end may only be removed or
inserted when no voltage is applied. The degree of protection IP67 is only achieved with
correctly connected and locked connectors. Adequate spacing around the power supply unit
should be provided to ensure free convection. The connection of the voltage supply must be
made taking into account the valid country-specific regulations. It must be possible to de-
energize the power supply unit using a suitable device outside the voltage supply. The device is
connected with connectors “L” to phase and “N” to the neutral conductor of the power network.
The “PE” connector must be connected to the protective conductor (see dimensions and pin
assignment). The power supply unit may only be operated with a connected protective
conductor. The power supply unit is maintenance-free and contains no parts to be changed by
the user. The power derating when operating at an ambient temperature of above 50 °C must
be ensured by the user. The base area of the power supply unit is screwed onto the mounting
plate or mounting wall using the four mounting holes (e.g. screw and washer M5). Optimum
cooling by natural convection must be assured at the mounting location. When used where CSA
C22.2 No 107.1-01 applies a separating element must be provided for the output circuit.
Appendix
A.2 Accessories
SIMATIC RF300
System Manual, 02/2021, C79000-G8976-C345-09
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