RLE Technologies SeaHawk 10K, User Manual

Page: 17 / 44

rletech.com SeaHawk 10K User Guide 17
2 Installation and Configuration
2
Use DIP switch 6 in block SW1 to designate whether the distance on the display is shown in
feet or meters:
Figure 2.9 DIP Switch 6, SW1 - Display Cable Length in Feet or Meters
3
RLE’s orange sensing cable has a resistance of 2.8 ohms per foot. Most other sensing cables
have a resistance of 4.0 ohms per foot. If you have questions regarding the resistance of
your cable, please reference the cable’s data sheet. Set DIP switch 7 in block SW1 to the
appropriate resistance-per-foot value.
Figure 2.10 DIP Switch 7, SW1 - Ohms per Foot Resistance
2.4.3 TB3 and TB4: Input Power and EIA-485
Communications Port
The SeaHawk 10K requires an isolated powr supply, either RLE part PSWA-DC-24-ST or
WA-AC-24-ST. A power supply is not included with the SeaHawk 10K and should be
purchased separately from RLE.
An isolated power supply must be provided for the SeaHawk 10K.
Do not connect 120/230 VAC to the unit, or damage will occur to the circuitry.
1
Run an isolated power supply to the location of the SeaHawk 10K, or use a DIN rail
mountable power supply and mount it next to the SeaHawk 10K.
2
If you are installing just one SeaHawk 10K, use the two left-most pinouts on either TB3 or
TB4 (marked AC/DC) to connect power to the SeaHawk 10K. Insert the positive and
negative wires of the power supply into either of the pinouts; the SeaHawk 10K’s circuitry
will auto-correct.
If you are installing more than one SeaHawk 10K, use TB3 and TB4 to create a daisy-
chained power connection.
3
If you are installing just one SeaHawk 10K and it will communicate via Modbus to a
Modbus-enabled controller, use the three right-most pinouts on TB3 or TB4 to connect the
SeaHawk 10K to an EIA-485 network.
W
ARNING