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1611458. Other US and international patents pending. Wavetronix, SmartSensor, Click, Command and all associated logos are trademarks of Wavetronix LLC. All other product or brand names as they appear are trademarks or
registered trademarks of their respective holders. Product specifications are subject to change without notice. This material is provided for informational purposes only; Wavetronix assumes no liability related to its use.
WX-501-0520 • 01.22
2. Connect another grounding wire from the exterior lug bolt to earth ground.
Verify Connections to Earth Ground
If there is not a good connection to ground, the Click 200 cards will not protect any equipment. After all
connections have been wired, verify that a good connection is made between the Click 200 cards and earth
ground by following the steps below:
1. Use a multimeter that is able to measure resistance in increments of less than one ohm.
2. Connect one probe to the drain on the unprotected side of the Click 200 (see Figure 11.5); connect the other
probe on the multimeter to earth ground.
3. The resistance should measure less than one ohm. If not, the most likely problem is the DIN rail is not making
connection to earth ground through the chassis of the cabinet.
The Click 200 cards have a connector on the bottom that snaps on the DIN rail that provides the connection to
earth ground. If the DIN rail is not making a good connection to earth ground, connect a 16 AWG (or larger) wire to
the DIN rail with a bolt and run that wire directly to an earth ground terminal.
Verify Communication
Follow the steps below to verify the communication connections:
1. Check the RS-232 connection by plugging a straight-through RS-232 cable between a laptop and the DB-9
connector on the Click 200.
2. Launch SmartSensor Manager and connect via a serial connection. If there are problems connecting, verify
that the cabling is set up correctly.
3. Check the RS-485 connection to the SmartSensor using a Click 304 RS-232 to RS-485 converter. Attach the
Click 304 to the T-bus (see knowledge base article
0513 T-bus Basics
for more on T-buses) and then plug a
straight-through RS-232 cable between a laptop and the DB-9 connector on the faceplate of the Click 304.
4. Launch SmartSensor Manager and connect via a serial connection. If there are problems connecting, verify
that the cabling is set up correctly.
Once communication and ground connections have been verified, the installation of the Click 200 is complete.
