August 2020 – TD 316 OPERATING MANUAL – Motus Wave Sensor 5729
Page 103
CHAPTER 8
Electro Magnetic Compatibility and Cables
In order for a manufacturer to legally produce and sell a product, it has to apply for CE marking. This means that the
commercialized product is conform to the CE applicable standards and can freely circulate within the EFTA (European
Free Trade Association) & European Union countries. The applicable directive for the Motus wave sensor is the EU
EMC 89/336/EMC (all electrical and electronic appliances) which mainly focus on the electromagnetic disturbances the
sensor can generate, which should not exceed a level allowing radio and telecommunication equipment to operate as
intended, and that the sensor has an adequate level of intrinsic immunity to electromagnetic disturbance to be able to
operate as intended.
This chapter describes the requirements for the Electromagnetic Compatibility (EMC) of the sensor. . And also
addresses the different cables available for use with the sensor.
8.1
EMC Testing
The Motus wave sensor has been tested at an accredited test laboratory to verify that the sensor fulfils the requirements
in the EU EMC directive (89/336/EMC).
Applied standards
•
EN 55011 (2009)+A1
•
EN 61326-1 (2013)
Applied tests
•
Conducted Emissions
•
Electrostatic Discharge Immunity
•
Surge Immunity
•
Conducted RF Disturbance Immunity
8.2
Cables
Different cables are available for stand-alone use with free end and connectors. The cables have both power and signal
lines RS-232. See chapter 10.2 for more information on cables that is best suited for use in the actual application. When
delivered, system drawings/cable drawings give details on parts connection and installation overview with best EMC
performance (best noise and surge immunity).
8.3
Power – Voltage range
The input voltage range is from 6 to 30Vdc. When using long cables the voltage should be as close to 30V as possible.
The peak current while the sensor is measuring (after power on) is normally well below, but it varies dependent on how
high the input voltage is and how large the voltage drop is in the cable (lower voltage on the sensor gives higher peak
current).
