Danfoss WS103, Technical Information

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Antennas on WS devices
W
Warning
Danger due to absorption of RF energy. Mobile communication devices may pose a health risk when
operated in the close proximity of people. To reduce the level of RF exposure, increase the distance
between wireless devices and people. The antenna(s) used for the WS devices should be a separation
distance of at least 20 cm (8 in) from all persons.
Electronic equipment interference
W
Warning
Danger of electronic equipement interference caused by RF energy. WS unit receives and transmits radio
frequency energy while switched on.
Interference can occur if it is used close to TV sets, radios, computers or inadequately shielded
equipment. Follow any special regulations and always switch off the WS unit wherever forbidden, or
when you suspect that it may cause interference or damage.
Installation
W
Warning
Unintended movement of the machine or mechanism may cause injury to the technician or bystanders.
To protect against unintended movement, before any installation make sure the ignition lock is turned
off and the battery is disconnected. Disconnect the device before handling it, also disconnect any
independently supplied output load circuits.
Power supply and connection
W
Warning
Damage may occur to the device when connecting/disconnecting. To avoid damage to the device, the
supply voltage, must be within the operating range. Connect the supply voltage connections to a power
supply. Protect the devise by using a fuse. Requisite fuse level should be 5 A, fast (F). Also, connect/
disconnect the main connector only if the power supply to the device is switched off.
C
Caution
Trouble free communication cannot be ensured unless WS is connected correctly. Connect the WS to the
same power and ground as the control system. The power supply must be common to both the WS and
the control unit to ensure trouble free communication. Most importantly, the ground connection, must
be the same.
Polarity reversal
W
Warning
Polarity reversal can damage the WS device. An external fuse, max 5 A (Fast) must be used to protect the
WS device against power supply polarity reversal.
Technical Information
WS103 Remote Solution
Safety information
© Danfoss | April 2016 BC00000365en-US0102 | 15