Commissioning; Safety Information - ABB RLM01 Inbetriebnahmeanweisungen

3 Commissioning

3.1 Safety information

3BDD011600R05
To supply RLM 01, use only a safety-low voltage. This requirement also applies to
the alarm contact supply.
In accordance with the UL/CSA requirements an external protection (e.g. fuse) is
prescribed. The fuse rating can amounted to 1.6A to 10A (characteristic: medium
slow-acting or slow-acting). Protection of groups of several devices with a common
fuse is admissible (several RLM 01 or RLM 01 together with other devices).
When selecting a mounting location, make certain that the limit values for ambient
conditions specified in the technical data are observed and the module can dis-
charge heat without any obstruction.
Do not connect any bus lines that are laid partially or entirely outside buildings. Volt-
age overload, for example resulting from lightning strikes, may destroy the module.
For protection against cases such as these, use optical fibre cable and appropriate
medium converters (electrical <==> optical) as high-quality electrical isolation.
In accordance with the PROFIBUS installation guideline the shielding of the bus
cables are preferably connected at the start and at the end with earth potential.
Place the module on a low-resistance and low-inductance earthed DIN mounting
rail. Grounding measures by way of the E terminal (1) on the terminal strip are then
not required.
Commissioning
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