Installation; Quick Wiring Guide - Endress+Hauser Rn221N Instructions

4 Installation

5 Quick wiring
guide
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Installation hints
Ambient temperature:
-20 to +50 °C (-4 to 122 °F)
Installation point:
Mounting on DIN rail as per IEC 60715
Installation hints:
Vibration free installation point, protection from external heating
Installation angle:
No limitation
Before installing the unit please check that the power supply corresponds with
that shown on the unit legend plate.
Warning!
When operating in the range 90...253 V AC, an input power switch must be
located to close proximity of the device breaking all current-carrying conduc-
tors. Both sides of live circuits must be protected by overcurrent protection
devices (nominal current ≤ 10 A).
Supply lines have to be protected also for lower voltage ranges.
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