D521-Manual_EN_Rev07 2017_05_26
Page 23 of 31
7
Safety Notes for Installation and Operation
7.1
Safety Notes for Installation
This unit has been designed and inspected according to standards DIN EN 61010-1. Observe
these instructions and wiring diagrams carefully, to ensure this protection. The installation must
be done only by adequately qualified personnel.
7.1.1
General Instructions
Do not open the instrument. Connections and all programming are done from outside. When
removing it from its enclosure, however, for whatever reason, make sure that power is switched
off.
The instrument may be installed in any position, but not in the immediate neighborhood of
interfering sources.
Signal leads must be carefully shielded, and should not be run in bundles with power or relay
control leads.
7.1.2
EMI
The unit complies with all relevant regulations, as determined by the Policy of the European
Committee for Electrotechnical Standardization (CENELEC), for the Electromagnetic
Compatibility (2014/30/EU). Testing and inspection have been performed according to Standards
EN 61000-4-2 and EN 61000-4-4. Thereby, the product meets all requirements to be marked by
the CE sign.
Strict observance of these instructions during installation and use is an indispensable precon-
dition hereto.
Specifically to be observed:
Terminals must be kept off all undue access; power supply and all input and output leads must
be protected against voltage interference, higher than specified operation data, and they must
be protected against electrostatic discharge.
The screen of A5S sensors has to be connected to the screen bar.
7.1.3
Safety Notes for Operation
On initial operation of the monitored machine, the operator must ensure proper function of the
measurement chains. This includes checking of the correct speed display and the trip release
due to a real overspeed condition.
The parameter settings must be documented and protected against unauthorized changes.
